Thread Number: 61048  /  Tag: Vintage Automatic Washers
RETRO FRIDAY--Say Goodbye to Garbage!
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Post# 836685   8/14/2015 at 20:19 (3,177 days old) by bwoods ()        

See an inside view of GE's Vintage "Disposall" in action...

CLICK HERE TO GO TO bwoods's LINK





Post# 836689 , Reply# 1   8/14/2015 at 20:37 (3,177 days old) by toploader55 (Massachusetts Sand Bar, Cape Cod)        

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I remember Mom saying that a Disposer is "The Last Word" on kitchen appliances.

 

Get that Multi Cycle Princess (or Empress) next to that Disposal !!!

 

Love that Kitchen.


Post# 836712 , Reply# 2   8/15/2015 at 00:31 (3,177 days old) by tolivac (greenville nc)        

Good video and love hopper shots!!!Wether it be in this case disposers,trash trucks,large shredders and compactors!Bones---didn't know animals were strung together with rectangular bone peices-hope ours aren't made that way.And oh yes----when GE made nice things and---made them in the US!!The last "GE" disposer I had was made in---CHINA!!!Not anything like the one shown in the film.Disposer makers should bring back the Carboloy shredders.And they would be great in giant EIDAL vertical shredders-their website shows hopper shots of things being ground in them--these machines may have motors up to like 500hp and grind anything dumpted into them!A hopper shot showed an EIDAL shredder grinding scrap metal--loved the SPARKS in the hopper!!!!Like the Fourth of July!And liked the kitchen in the disposall video-nice,- unlike trashy kitchens of today.Throw the todays kitchens into the EIDAL shredder!

Post# 836713 , Reply# 3   8/15/2015 at 00:44 (3,177 days old) by Realvanman (Southern California)        
Stainless Steel

Yesterday I removed and cleaned the stinking 6 or so year old Insinkerator from our facility. That flywheel down in there was RUSTED. Today I learned that it was leaking like a sieve, and sure enough, right out of the motor. So this evening I installed a new one. Now tonight I'm wishing I could have installed a 60 year old DisposAll lol.

I love old stuff!


Post# 836733 , Reply# 4   8/15/2015 at 05:45 (3,177 days old) by Easyspindry (Winston-Salem, NC)        
Great demonstration . . .

. . . of how a disposal works. I'll bet most people never think about "how" this stuff works.

Thanks for sharing.

Jerry Gay


Post# 836814 , Reply# 5   8/15/2015 at 16:42 (3,177 days old) by Travis ()        

I didn't realize that I had one.  This is in a late 1940's GE electric sink.  I stole the stainless racks for my 1954 GE that's going in the kitchen.  I am now going to use the disposer!  It better be as great as that film makes it out to be.


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Post# 836849 , Reply# 6   8/15/2015 at 22:02 (3,176 days old) by bwoods ()        
1960's disposer

Travis, this looks like a mid to late sixties "Disposall". A wonderful garbage disposal. You will love it!! One of the better disposers for fruit pits and bones.
Can you give us a close up of the manufacturer's label at the bottom of the unit?


Post# 836869 , Reply# 7   8/16/2015 at 00:16 (3,176 days old) by tolivac (greenville nc)        

I beleive the one shown is a real GE machine.The kind with the "blender motor" in it-high speed.These are VERY effective and FAST!Some of these had Carboloy shredders in them.Otherwise just a simple "slasher" type projection in the inside of the hopper above the rotating shredder.

Post# 836922 , Reply# 8   8/16/2015 at 12:28 (3,176 days old) by bwoods ()        
..the real thing!

Rex, that is the real thing! A genuine Louisville, KY built "Disposall" built by our own people not the communists in China. (and not by Annaheim Manufacturing in Calif.) I think it is the series-wound motor as well. That's why I wanted to see the manufacturer's label.

I have both the induction models and the series-wound, they are both better than average disposers. The series wound units work at 8000 rpm, about 4 times the speed of conventional induction machines. Using theses "blender" motors as you say, Rex, was a real coup on GE's part. Series wound motors increase torque with a decrease in speed.

The more you put in it, the more is slows down its rpm as the more the torque curve increases. Some people criticize it for this, when in reality you want it to slow down. What sounds like slow is often still much higher than the standard 1725 rpm of a conventional induction motor. A series-wound motor is like a loyal dog who will give its life fighting to protect his master. If it weren't for the thermal/current cutout it would fight the load until it literally burned up.

So yes the GE series unit are much faster on corn cobs and things like pork chop bones. However, I have a tendency to put too many cobs in non-stop and the overload will kick in to protect the motor. On the GE induction, it may be a touch slower, but you can put cobs, watermelon rinds, etc. down non-stop for a much longer time before you overheat the motor.


But the series motor, aside from the noise, is ideally suited for a disposal. Torque increases with load applied with a drop in rpm, so while grinding it's not that noisy as rpms are often in the range of a conventional disposer. As the chamber clears, rpm's go up and that sprays the water hitting the impellers and creates a cleansing effect for the chamber. So when it starts sounding like a vacuum cleaner again, you know its down grinding and flushing itself. Cool!!







Post# 837015 , Reply# 9   8/17/2015 at 03:23 (3,175 days old) by tolivac (greenville nc)        

I like the universal motors,too-another thing that could be done to lessen the strain on the universal motor-put a fan in it like on others to keep it cool.In a disposer the motor heats up FAST-the water actually doesn't cool the motor-if you throw that handful of corncobs in it.Do them one at a time-you would be surprized-like with a blender-the batches end up being faster.When the universal motor disposer is mounted in the kitchen sink cabinet-both the cabinet and water flow muffle the motors noise and the shredding noise.I too like to hear so you can find out as the motor speeds up and shredding sounds diminish-time to add more stuff.Like the blender-the disposer motor works best at high speeds.If I were to have LOTS of tough waste-best to save that for the trash truck!The compactor-packer in those will handle ANY kitchen waste with no sweat!!

Post# 837016 , Reply# 10   8/17/2015 at 03:25 (3,175 days old) by tolivac (greenville nc)        

I also have both universal and induction GE dispsoers-GREAT machines!!!

Post# 837076 , Reply# 11   8/17/2015 at 15:26 (3,175 days old) by Travis ()        



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Post# 837129 , Reply# 12   8/17/2015 at 21:14 (3,174 days old) by fan-o-quality (Oklahoma)        

I would trade in a brand new faux Louie the 14th/french country farmhouse or whatever the name of this current style kitchen with a 1,000 sq ft of marble and tile and wooden embellishments for that kitchen in the video in a heartbeat! Love that video!

Post# 837137 , Reply# 13   8/17/2015 at 22:14 (3,174 days old) by warmsecondrinse (Fort Lee, NJ)        

The video was cool and I'd love to have that kitchen!

I have no experience with disposers. We had these things called humus piles, lol. Anything organic got thrown there.

I got a kick out of that old-fashioned style of speaking the narrator had. For some reason it's impossible to take seriously and only inspires giggles when used to 'teach' what is supposedly 'good','bad','right', 'wrong', etc. HOWEVER, it's great for technical info like this video had. You can actually focus on the information... Unlike today when you feel like someone is trying to convince you something wonderful ... and you're just like, "Dude, just tell me how your impeller design is better than the competition's."

Kind of makes me want to check out the other vids on the site....

Thanks,

Jim


Post# 837138 , Reply# 14   8/17/2015 at 22:36 (3,174 days old) by bwoods ()        
Induction

Thanks for the pictures, Travis!! That is an induction motor unit. the induction machines pulled 7.0 amps and GE only put "Heavy Duty" on those machines.

General Electric's series-wound machines, of the day, pulled 5.0 - 5.3 amps depending on the production year. They later had a few BOL series units that went down to 4.5 amps.

I agree, Jeff, that would be a dream kitchen to have!!!



Post# 837143 , Reply# 15   8/17/2015 at 22:52 (3,174 days old) by Travis ()        

I think it works fine. I got all the leaves out of it today. I plugged it in and ran it and it spit out some crud.

I'm not sure if I like the batch feed model. I'll hook it up though and see how it goes.


Post# 837154 , Reply# 16   8/18/2015 at 00:46 (3,174 days old) by tolivac (greenville nc)        

Agreed-when I saw 7A on the dataplate-its an induction motor machine.Use it in good health!!!

Post# 837179 , Reply# 17   8/18/2015 at 07:42 (3,174 days old) by bwoods ()        
have fun with it, Travis

Rex said it best. They are "great" machines.

I think you will like the batch feed once you get used to it, Travis. They have some advantages. You don't have to push or force things in past the splash guard (since there isn't any.) You just drop them in the hole. And bone fragments, etc. can't fly up out it while operating since the stopper is on while it is running. The stopper also keeps much of the sound from escaping through the opening while it's grinding.

Make sure your impellers (swivel hammers) are free to rotate. Sometimes if the unit has set around unused gunk will get under them. Spray a little penetrating oil on the pivots, let it set for a while, then gring up a couple of pork chop bones. This will usually break the hammers loose and also the bone fragments flying around inside the hopper will scour it and the turntable really nice and shiny clean.



Post# 837212 , Reply# 18   8/18/2015 at 10:52 (3,174 days old) by Combo52 (50 Year Repair Tech Beltsville,Md)        
GE Disposalls

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GE made some good disposers over the years and also some pretty cheap ones. The only reason they made the series wound motor units was they were cheap to make and took up less space. The series wound motor units were generally only recommended for new construction as it didn't grind the waste nearly as fine as the better induction units as a result they would clog pipes if you had older plumbing in your home.

 

The Carboloy cutter that GE added to their induction units is probably more of an advertising gimmick then any real advantage and performance I'm sure it added a 10 or 15% advantage but that one little quarter inch square piece of Carboloy sure couldn't have done much, I have seen older GE disposers with the carboy cutter where it was worn completely smooth. The real beauty of the induction units is the little square holes punched in the grinding ring those holes never really got dual and as a result the machines continue to grind well throughout their lifetime.

 

Even though these GE induction disposers all were quite good I would still rate the Maytag disposers the waste King disposers and the National-Kitchenaid  and the of coarse the In Sink Erator disposers as far ahead of GEs efforts.


Post# 837244 , Reply# 19   8/18/2015 at 15:31 (3,174 days old) by bwoods ()        
new construction only???

What is your data source, combo52 that says GE series wound disposers were "only recommended for new construction."? I would like for you to displays that source or give us the reference so we can look it up.

My recommendation is just the opposite. The series-wound motor propel the waste with such force that I have found them to actually prevent plumbing clogs. From my parents experience with an older home and my sister and brother-in-law who had an older house that experienced frequent kitchen plumbing clogs. He changed over to a GE series at my recommendation and never experienced a clog again in the rest of the time he owned the house.


I have been using a series would GE's on and off since by parents replaced their Westinghouse Disposal with a GE series in 1971. I have never had a Carboloy cutter wear down.

The advantage of the Carbaloy cutter is that is high grade high carbon content steel that last longer than conventional steel. The cutter in the lower line series models, is basically a piece of standard steel welded to the hopper.

The Carbaloy cutter is made with a sharp edge and of course high carbon steel will hold its edge longer. My parents house was built in 1954 and did not have good plumbing, by any stretch of the imagination. My dad loved the series GE because of the force at which is discharges wastes and kept their plumbing lines from clogging. As an empirical test, you can fill a sink up with water and allow the disposer to pull it down, and make a comparison. The series GE pulls it down with quite a force and discharges it faster than the induction units that I have and have used. I've never actually timed various units in doing this. That might be a fun experiment in the future!

Wes would you agree that In-Sink-Erators excel in grinding ability over the General Electric's (not the newer Anaheim or Chinese GE's, but the older "real" GE's.)

No way with fruits pits or hard bones, GE's are much faster and do not have the pits and bones bouncing around for long periods of time before the machine can dispose of them. I had a high end Kenmore, 1hp,(ISE built and I felt it was very slow of the harder pits. Often bones, like pork chop bones, would grind, but more slowly than the GE's and of course, that's a big waste of water because you have to leave it running while the disposer is attempting to grind its load and clear the chamber.

The non-Insinkerator built Maytags were wonderful. They are good all around units that tend to do everything well, in my opinion. One of my favorite disposers. I only owned one BOL Hobart-built National which was exceedingly noisy and jammed frequently. It had non-swiveling impellers and could not move away from jammed bone fragments, etc. It also had no rubber or elastic type mount to mitigate noise/vibration transmission to the sink.

I wouldn't even mention National in the same breathe as GE. The National was cheaply built, noisy and a frequent jammer.

Never had a Kitchen-Aid built by Hobart, but currently have the Viking built version of the Kitchen-Aid. Viking bought the design rights for the machine. It is good. A VERY heavy machine. Small hopper in the continuous feed model so it splashes out of the throat opening a lot. Grinding is not noisy, but the motor vibrations are transmitted to the sink and quite audible when there is not loud grinding. I like it, its a good heavy duty machine. Can't dispose of fruits pits nearly as fast as either GE, they tend to rattle around in the hopper before the machine can get them fine enough. But it still doesn't take as long as most of the ISE/Kenmore's I've had.

Another wonderful disposer, which hasn't been mentioned yet, is the original Waste King (before they were built by Annaheim, Manufacturing. They also built many of the units for Frigidaire. Excellent machines all the way around. They were quiet and had a very effective mount to dampen vibration transmission.


Post# 837309 , Reply# 20   8/19/2015 at 02:24 (3,173 days old) by tolivac (greenville nc)        

I have seen the universal motored GE's along with the induction ones at a GE dealer years ago.You could buy either one.The induction one was more expensive.I liked the earlier ISE machines that had the cast shredders as opposed to the stampted ones today.Just wished ISE used undercutters.They do now--but their present machines shred SLOWLY!!!and would waste time and water.My Mom lived in a house with a universal GE and NEVER had a clog.The earlier Waste King machines were plain awesome!!Efficient,quiet and shredded very fine-no clogs there!Bring that design back,PLEASE!!The Aneheim deseign is CRAP!!!

Post# 837362 , Reply# 21   8/19/2015 at 16:04 (3,173 days old) by Frigilux (The Minnesota Prairie)        

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Enjoying Retro Friday videos, Barry. Looking forward to this week's edition.
📺


Post# 837366 , Reply# 22   8/19/2015 at 16:51 (3,173 days old) by bajaespuma (Connecticut)        
For those interested

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That's a 1960 GE set kitchen; we've all seen it before in a multitude of print ads, sometimes it's Petal Pink, sometimes it's Turquoise Green. The oven and the dishwasher (neither Princess, nor Empress, but a very fine "Custom 4-Cycle" with Plate Warmer button) are without a doubt from that year. I'd kill for one of those dishwashers.

 

I'd love to have a disposal unit, but my septic engineer explained to me that disposers actually do too good a job of grinding food up into small bits and those small bits don't spend any time decomposing in the septic tank but head straight to the leaching fields where they clog up the works. So now I compost which is a smelly, messy chore that I do out of the conviction that I'm doing some small good for the land around me.

 

BTW, I'm told that the Custom 4-Cycle in the picture below is floating around out there. If whoever has it ever wants to sell it to a good home...


Post# 837369 , Reply# 23   8/19/2015 at 17:35 (3,173 days old) by marky_mark (From Liverpool. Now living in Palm Springs and Dublin)        

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I have a friend in the UK who used to have a Waste King made in Anaheim, would be about 15 years old now I guess.  Very small unit with small grinding chamber and quite noisy but high RPM (I think about 2700) and used to grind very fast.  Would grind anything no problem.  Then she moved to a new home with a big ISE unit that was quieter.  Now she has moved again and has the TOL Insinkerator Evolution model which is very quiet and has the under cutter.

 

Here in Spain I have the BOL Insinkerator and it is ok but noisy and slow with Parmesan rind and also I have always found that BOL Insinkerator models struggle with lemons.  They do grind lemons eventually but they sometimes get wedged.  Interestingly I have never known a disposal to jam.  I have also never used a batch-feed model.  They are sold in the UK and Spain but I have never used one.  Never seen one in the USA either.

 

I did once cause the mother of all clogs in a vacation rental house in Arizona.  I put down a whole load of uncooked spaghetti and it did clog in the trap.  So I put boiling water down -- obviously a mistake with pasta!  The result, having left it overnight, was a congealed mess in the trap that resembled concrete!  Pretty easy to remove the trap, then had to poke a stick through to get rid of it LOL!  Other than that, I have never had a problem with clogging except I used to live in an apartment in Brighton, UK and it had a BOL Insinkerator that was installed when the place was built in 2005.  This would clog constantly even with the most basic small amounts of food going down.  I had to get Dyno-Rod out several times.  Presumably something wrong with the plumbing.


Post# 837371 , Reply# 24   8/19/2015 at 18:02 (3,173 days old) by jkbff (Happy Rock, ND)        

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Who makes the Evergrind brand for Menards?

Post# 837373 , Reply# 25   8/19/2015 at 18:30 (3,173 days old) by bwoods ()        
thanks Eugene

Hopefully I can find some more good ones.

Post# 837443 , Reply# 26   8/20/2015 at 09:11 (3,172 days old) by neptunebob (Pittsburgh, PA)        

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Who makes the Evergrind brand for Menards?

The Emerson Electric Company - in other words, InSinkerAtor.

Which brings up Barry, if the GE disposal is superior why is just about every disposal, at least in our area, is an Insinkerator? Could it have something to do with there being a Kenmore version?

Also, ISE hypes that once the collar with the drain flange is installed on the sink, it is possible to simply screw connect in a new ISE into the old drain flange, kind of like when they dock spacecraft to the International Space Station. But I find usually by the time they need a new disposal the flange is so beat up and ratty that I end up replacing it anyway.

Here's a tip: The drain flange with the snap ring with the other parts is a real pain to install under a sink, so it can help to duct tape the flange in the sink and then tape up the other parts on the underside of the sink. That way it is possible to get that pesky snap ring snapped so it can support all the parts.


Post# 837446 , Reply# 27   8/20/2015 at 09:47 (3,172 days old) by bwoods ()        
GE disposals

Hi Bob. General Electric has not manufactured disposers since about 1980. Anything after that time is Annaheim manufactured who paid GE a royalty to stick their logo on their machines. For a brief time in the late eighties and early nineties, Anaheim manufactured a unit with GE's logo based on the old series-wound motor design, but after a few years dropped it.

Waste King, Whirlaway, GE, BoneCrusher, etc. are now all Anaheim Manufacturing built units.

I remember throughout most of the sixties and early seventies General Electric disposers were found in most of the major department stores appliance departments where I lived and were the choice brand for many builders who put in the series-wound units in new homes.


Can you remember the days when builders often put in kitchens with all the appliances being one brand? Then they would advertise it with "Kitchen Equipped with Appliances by General Electric" etc. Often in this area the homes had GE heating/cooling systems as well.




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Post# 837453 , Reply# 28   8/20/2015 at 10:34 (3,172 days old) by jkbff (Happy Rock, ND)        

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neptunebob -- Thanks!!

So who makes the best modern disposal? Is the InSinkErator Evolution worth it?


Post# 837457 , Reply# 29   8/20/2015 at 11:28 (3,172 days old) by neptunebob (Pittsburgh, PA)        
I would say not...

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The evolution has more sound insulation but I think if you get the lowest price that has a stainless steel turntable inside should be good. Even the low priced one with the galvanized turntable will be ok. Disposals eventually leak in the bearings after about 10 years so you will end up replacing an evolution anyway at the time and since most people don't run a disposal for a long time (we don't)why not save any extra 100 dollars. The Evergrind is like the Badger disposals ISE makes for Home Depot, OK but not an evolution.

Post# 837466 , Reply# 30   8/20/2015 at 12:44 (3,172 days old) by jkbff (Happy Rock, ND)        

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What would be the best on the market? As far as performance and reliability?

Post# 837467 , Reply# 31   8/20/2015 at 12:48 (3,172 days old) by marky_mark (From Liverpool. Now living in Palm Springs and Dublin)        

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My best friend has the TOL Insinkerator Evolution 200 (known as Evolution Excel in USA) and I have the BOL Insinkerator.  Is the Evolution worth it?  My friend would say definitely yes.  It's much quieter and seems to grind very well.  She is very glad she spent the extra money.

 

Of course, it may not last any longer.  And even if it actually breaks sooner, you could still say it's worth it because it's so much quieter and more pleasant to use.

 

Some people notice that the sink drains slower and food takes more of a push through the splash guard.  My friend hasn't noticed this.  It's also quite a large unit and will fill the space in the cabinet below. 

 

I guess it depends on what is important to you and also what you want to pay.


Post# 837556 , Reply# 32   8/21/2015 at 01:25 (3,171 days old) by washer111 ()        

An interesting thread. Glad to see you back posting after a (rather long) pause, Barry. 

 

It sounds as though GE had among the best disposers back in the 1960s and 1970s. Really, it is a shame they let the production go to pots after all those years, having established such a positive brand reputation. 

 

Unfortunately, I can't make much more of a meaningful contribution on this thread, as disposers are practically unheard of in Australia. Brand-new, they command prices that most home-owners simply cannot justify. This, combined with the fact Australians have been led to believe they are a waste of energy, increase burden on the sewerage system AND apparently clog drains have all contributed to this "stalemate" of sorts. 

 

With regards to the person who cannot use a disposer with a septic tank, I wonder if perhaps there are means of running the kitchen's drain to a composting unit, which allows drainage into the garden, but with a fine screen to capture kitchen scraps and compost them?

It is unfortunate the disposer works so well as to circumvent the septic system altogether; all those food scraps would be wonderfully beneficial for the microbial life that exists in such a system and would certainly balance out the problems associated with using harsh(er) cleaners for the bathroom and toilet. 


Post# 837578 , Reply# 33   8/21/2015 at 06:05 (3,171 days old) by syndets2000 (Nanjemoy, MD)        

My experience with the series motor disposer was in early 1965, when my Dad moved into a new apartment after he n my mom split- So I wonder if they were in production as early as maybe 1964?
I never liked this model- It was way too loud....I think I remember a consumer report rating of disposers, and these models did not grind material as fine as the induction units- and when the bearings go bad, the noise level is far more worse-if it was improperly mounted in a cheap stainless steel sink, you could see the water vibrating in it-
ISE seems to make every brand of disposer nowadays-I like the evolution line, for now, they are quieter than the older models-there are so many store branded models, I think ISE has saturated the market.
We had an induction GE (1960), a Wast King (1966) and there after, always this series motor GE- they seemed to be everywhere-I would never own one....


Post# 837603 , Reply# 34   8/21/2015 at 10:13 (3,171 days old) by bwoods ()        
loudness

Yes that is the nature of a the beast. When you have power, you area often going to have some noise. While griding, as Rex said, it wasn't much noisier than the conventional induction motor disposers. But as they chamber clears, the rpms increase and you can definitely hear it! That is one of the good advantages, you definitely know when the chamber is cleared of food.

Builder, in my area, frequently put in the series units without any sound insulation. I have had both. I currently have Carbaloy sound insulated model from the later '70's (its called the "Piranha" and makes things quieter. The bearings are just fine. They are very good bearing actually. When I turn it off with no food waste in it, the turntable actually coasts.

As Rex says one of the advantage of the series units is that they are ideal for someone with marginal plumbing as the force with which the food wastes are expelled is great to prevent clogs that one may get with conventional disposers.


Post# 837646 , Reply# 35   8/21/2015 at 13:49 (3,171 days old) by syndets2000 (Nanjemoy, MD)        

well.....the bearings were always gone in the ones I replaced with ISE units- then there were shredder plates that always come loose.. :/

Post# 837655 , Reply# 36   8/21/2015 at 15:07 (3,171 days old) by bwoods ()        
bearings

never had a bearing go out or shredder plate loosen in all the GE series or induction disposers I have had/now have. I did have Maytag (a "real" pren-ISE Maytag) in which one of the impellers came off of the turntable. I probably should have attempted to repair it, but just junked it as it was about eight years old at the time.

Post# 837715 , Reply# 37   8/22/2015 at 01:01 (3,170 days old) by tolivac (greenville nc)        

I have a GE Piranha machine and it seems like that is the TOL of the GE series disposers.The sound insulation quiets it somewhat-but you can still hear the shredding action.The real Maytags were also a beast of a disposer.I have one that replaced an ISE Evolution model.The Maytag is so superior-faster and more thorough grinding.the ISE took FOREVER to grind waste.It is showing some of the disposer designs from the PAST are BETTER than what is used today.the bearings in both the GE series and induction motor disposers are pretty tough.Seen more recent ISEs go bad before the GE machines-and of course about anything will outlast the Chinese made disposers!Their PM motors need to be better quality along with the shred systems.The few PM machines that failed on me-a "GE" marked one and Waste King-the motor rectifier failed.Radio Shack used to carry those-but not anymore.When they did it was only a 15 min fix to replace the diode bridge stack.

Post# 837730 , Reply# 38   8/22/2015 at 06:05 (3,170 days old) by Easyspindry (Winston-Salem, NC)        
It's been interesting . . .

. . . reading about disposals. All I can add to the thread is that I have a Maytag that is about 38 years old. It replaced a Kitchen Aid which didn't last nearly as long as I thought it should. I chose the Maytag because I was told that if and when the motor failed, it could be removed and replaced without having to buy the whole disposal.

Well, it's the same disposal -- motor and all -- and has shredded anything I've put in it -- bones, corncobs, vegetables . . . anything I've put in it.

It's a batch feed model

Jerry Gay


Post# 837731 , Reply# 39   8/22/2015 at 06:21 (3,170 days old) by tolivac (greenville nc)        

Hang onto your Maytag-as long as it still works--most of the disposers sold today are----JUNK!!!!Sadly Maytag won't be able to service your older machine.They are no longer in the disposer business.--except as ISE units with Maytag stampted on them.

Post# 837751 , Reply# 40   8/22/2015 at 12:03 (3,170 days old) by bwoods ()        
Australia and Disposers

Thanks, Washer111!

Too bad about the general lack of consumer disposers in Australia.
I assume they are used in commercial establishments, such as restaurants, correct?

On the bright side, there would seem to be a potentially open market for reasonably priced consumer disposers, with virtually no competition. Based on what you indicated about attitudes, part of the marketing strategy would be to educate the consumer on the inherent value and convenience of the units.

Some entrepreneurial individual might be able to do quite well financially tapping into this.



Post# 837766 , Reply# 41   8/22/2015 at 14:27 (3,170 days old) by Realvanman (Southern California)        
Two Pole Induction Motors

I've always considered the use of a series motor in an application that does not absolutely require a particularly high speed or light weight to be a cheap substitute for a nice smooth and quiet running induction motor.

While I have no personal experience with a series motor powered disposal, I would think that, if the goal was simply higher speed, then induction motor powered disposals would be powered by two pole machines, giving around 3500 rpm, here in the land of 60 cycle current.

And what about the rest of the world, with 50 cycle current? Do they still get four pole motors? They'd run at only 1450 rpm or so.

Shaft speed is not the only factor in a machine such as a disposal. It's peripheral speed that gets the job done. So a slower- and quieter- (and more expensive) motor can be used so long as a larger (and more expensive) grinder is used. The opposite is, of course, a cheaper high speed motor and grinder.

Just my take. I always prefer larger and slower machinery. The engine in my motorhome has a maximum rpm of 2100. But it also displaces 743 ci and weighs nearly as much as a small sedan.

Keith


Post# 837767 , Reply# 42   8/22/2015 at 14:51 (3,170 days old) by bwoods ()        
series wound advantage

One of the advantages of series wouldn't motors, is it has among the highest weight to torque ratios. An even larger advantage is that the series wound motor has a torque curve inversely proportional to speed. So when load increases torque increases dramatically to meet the demand. That is why series wound motors are used in electric drills. A high power to weight ratio and an exceedingly high stall torque.

Therefore a series wound motor is ideally suited for a disposer where you want maximum "grinding power" applied when the machine is under full load and the very high stall torque that prevents jams that induction motors are more susceptible to in this type of environment.



Post# 837791 , Reply# 43   8/22/2015 at 19:33 (3,170 days old) by realvanman (Southern California)        
Series Motors

Don't get me wrong- Machines with brushes and commutators are among my favorites! :)

And true that nothing can hunker down and pull through a tough load like a series motor. An induction motor can typically develop 2 or 3 times it's continuous power rating, but once the break down torque is reached, it will be brought to a swift halt. And the start up torque of a split phase motor is quite anemic, and of course pales in comparison to that of the series motor.

But I would argue that the extra mass and slower speed of the induction motor results in quieter operation, and that light weight doesn't matter since it's never moved from under the sink :)

With proper operator care, ie not overloading, and waiting until the grinding noise has stopped and the running water has cleared the debris before shutting down, I would maintain that induction powered machines are fine :)

And, most importantly, since tone cannot be conveyed over the internet, make no mistake that I'm just enjoying a friendly debate, not a competition or a flame war. It's fun talking about this stuff, and hearing the opinions and experiences of others :)

Keith


Post# 837803 , Reply# 44   8/22/2015 at 21:04 (3,169 days old) by bwoods ()        
both series and induction motors have their role

,

Agree with you 100%, Keith!

Its fun to banter about the appliances, etc. I hope my extolling the features of the series unit didn't imply a dislike for the induction motor disposals. Quite the contrary. I have both, and both get the job done, just differently. I like both. I find the inductions a little slower but quieter and the series a little faster but certainly a little louder at times.

Noise is a funny issue in this case. Yes, I find the series motors at full rpm are reminiscent of a vacuum cleaner in sound. But when grinding heavier bones like pork chop bones and fruit pits there is actually less noise from the series unit as they don't stay in the hopper anytime at all. With some of my induction units the bones and pits just bounce around in the hopper what seems interminably and keep making a racket that really gets on my nerves. So I've traded a louder motor noise for a much shorter duration grinding racket.


I think one advantage of the lighter/smaller series units, for some people with limited space, is that they take up a little less room under the sink. If a homeowner is going to install, the lightweight nature of the series motor also makes it a tad easier to lift and mount. But whether that is an advantage or not is in the eye of the owner.

As a rule the induction motors are heavier and as you say they have more mass, so they dissipate heat better. From my experience they will work a somewhat longer amount of time non-stop before the thermal overload will kick it.

So you've got advantages either way! Personally I am just glad to have a disposal at all, and feel badly for the people in countries like Australia where they are virtually unused by consumers, as Washer111 mentioned.



Post# 837831 , Reply# 45   8/23/2015 at 07:31 (3,169 days old) by washer111 ()        

My assumption would be that disposers are present in more professional kitchens. I haven't seen any evidence of their use in "mom and pop" stores that you find around the place. 

 

Of course, I suppose that grease traps can make up for some of that, and it could very well be the reason why they aren't as common in those small settings, due to the cost of more advanced traps (if such a thing exists. I'm only making assumptions here). 

 

You are right that there would appear to be a largely un-tapped market here in Australia. The biggest gripe Australians would have is "running the water while the unit is on." The last 15-20 years have seen some very major droughts in this country, and as such, the government tries through every means possible to encourage people to save water, and not "waste" it.

Some cities and localities had such severe water restrictions in place that car-washing and even watering gardens was practically prohibited. 

 

I think getting disposers into homes here would need to be in conjunction with grey-water systems. The additional plant matter (maybe not so much rotting flesh, but I could be wrong), combined with soaps would make a very good fertiliser/soil-conditioning agent. The water of course is being re-used from water-intensive activities such as laundering and washing up dishes. 

 

This really gets one to thinking! 

 

Now I must pose a quick question; are Induction motors and split-phase motors the same thing, or am I getting terminology confused? The discussion of series-wound motors is interesting, although distinguishing all three (or two?) is making my head rumble. LOL.

 

Perhaps I ought to go and research, although in times past I have tried doing so and ended up confused. I believe this happened the last time we had a thread/"squabble"/debate about GE Dishwasher's with the Induction (or was it shaded-pole?) motor. 


Post# 837843 , Reply# 46   8/23/2015 at 09:27 (3,169 days old) by bwoods ()        
many types of induction motors

understandable confusion!! There are many iterations of induction motors. shaded pole, split phase, capacitor start, capacitor run (and both together), synchronous, etc. An induction motor operates on AC current.

A series wound motor runs on AC or DC (hence sometimes called a "universal" motor) and has electricity actually flowing in a series through the field windings (stator) into the windings in the rotor attached to the shaft. Pieces of carbon, called brushes press against a device called a commutator to send the current into the rotor coils. The commutator is wired so it causes opposite poles (S and N) in the field windings and the rotor windings to be across from each other resulting in a push and turning of the rotor.

Induction motors have no direct connection in the rotor, but a magnetic field is "induced" in the rotor windings. For example, when there is a S pole in the field, a north pole is being induced into the rotor winding across from it, etc and this gives the rotor a little push and hence it turns. To oversimplify a bit the magnetic field is rotating and carries the rotor around with it.

Yes, if a gray water system was widely used in your country, it would be advantageous to have a disposer as you say the organic material could be filtered out and used as a fertilizer. Great idea! That would be a win-win situation.

Hope things get better drought-wise for you down under. Hopefully, the El_Nino will help all of you out this year!!



.


Post# 837974 , Reply# 47   8/24/2015 at 07:45 (3,168 days old) by combo52 (50 Year Repair Tech Beltsville,Md)        
GE Series Wound Disposalls

combo52's profile picture

Were cheap, noisey and crude disposers. There is a housing development [ Calverton ] near by where Kettler Brothers built 1800 homes from 1963-1969, they all had GE kitchens with a GE disposall, the first year or so had the GE induction units after that they all had the cheap builder SW units.

 

Over the years I have been in at least 1/2 of these houses and replaced at least a hundred or more of these disposers personally. The usual failures were, bad bearings, motors that went electrically dead, cutters that broke off the flywheel [ very common, and if you think that these things were noisy you should have seen people trying to use them with just one cutter, the water would dance out of the sink, LOL ] and they also suffered from really flimsy attachment clips that often allowed the unit to just start to fall loose from the sink flange.

 

The only good thing about these GE SW was that they were the first mass produced units that were basically corrosion proof in construction, before these came around every disposer had many parts made of cast aluminum and as a result most disposer failures were caused by corrosion and leaks. Because of this these GE SW disposalls could last as long as 10-15 years for families that did not use them much and certainly did not try grinding bones and corn cobs, etc.

 

As Robert [ syndets2000 ]  also mentioned these GE SWDs were not great at grinding food waste very finely, I have a comparison report from Maytag comparing their new disposers with all other popular brands including the better and cheap GE SW units and the difference in grind quality is huge. I also have a similar report from Whirlpool comparing their disposers with both style GE units. I also saw the CRs test where they complained of poor grinding and last but not least I have the GE service manual for their Disposalls where they recommend the SWDs primarily for NEW CONSTRUCTION, I don't make this stuff up.

 

Using a SWM for a disposer is a stupid idea, SWMs are great motors and work well in appliances like vacuum cleaners where they can run at near full speed and have lots of cooling air going through them. As mentioned SWMs do produce a lot of torque at a stalled condition, but doing this much plays hell on brushes, commutators and on the windings them selves especially in an appliance with NO COOLING system.

 

I am sure that this is one of the reasons that we replaced so many of the units that were completely dead, often the customer even told us that they tried to grind up most of a water melon etc right before it died. [ and yes we even checked to see if the over-load protector had died, we would replace the OLP if that was all that was wrong with the unit ]

 

I would have to put the GE SW-Dispossalls in the same class as their use of the cheap shaded pole motors in their DWs for so many years.

 

But after all  "Profits Are GEs Most Important Product" Along with outsourcing jobs to every country possible.

 

John L.


Post# 837999 , Reply# 48   8/24/2015 at 10:19 (3,168 days old) by bwoods ()        
series wound disposers

As mentioned, this was a real coup on GE's part to match a motor so precisely with its task. the torque curve on a series wound motor gives power when its needed most, under load. with speed increasing with decrease in load you have chamber clearing and cleansing.

Series wound motors are known for their durability as well as their ability to increase power with load. This is just the characteristic of the motors by nature. It also helps to explain the longevity of the GE series wound units. Look at vacuum cleaners, the series motors run for fifty, sixty years and more. Couple motor longevity with a stainless corrosion proof turntable, impellers, hooper and GE's high quality bearings and you can see why so many of these units are still in existence.

I remember Whirlpool's (pre-ISE) disposers getting a bottom rating in consumer reports for grinding ability and coarse discharge. A poorly engineered machine. But of course, Whirlpool has never had the extensive research dollars, nor the facilities that GE has.

GE is an electrical manufacturing company and has been producing electric motors since the late 1800's so their engineers are expert at matching motors to applications. The unitized series-wound motor was not only an ideal match up with motor/application but had reduced production costs. So builders could put in a bottom line unit that was of much higher quality that other manufacturer's units of the day.

ISE disposers BOL builder models were not stainless. Once again GE had a major role in the builders market with a low cost, stainless disposer with a high speed/high torque motor.

The series motor units were more economical to produce and the price savings were passed on to the consumer. When comparing units of the same place on the model line, that is comparing BOL with BOL and TOL with TOL, etc. GE's series motor disposers cost less than GE's induction motors.

So it was a real win-win system for the consumer. The series wound motor disposers gave a.) reduced cost b.) lighter weight for consumer self-installation c.) displaced less room under the consumers sink d.) had the highest speed motor available to consumers e.) had a torque that matched application load making for a unit very difficult to jam under normal usage d.) even GE's BOL series-wound motor machines provided consumers with a corrosion proof stainless hopper and turntable. e.) for those with marginal plumbing systems the high velocity discharge of the wastes is a definite advantage to the consumer in preventing clogs in their drainage lines

So one can see why they were in production for nearly twenty year. Once again a manufacturer keep a line of appliances in production for twenty years unless they are in favor with the consumer and in this case the building industry as well.

Other individuals in the AW.org experience with these units bears out the fact of their superiority in several key areas.

Bless your heart, Combo52, my apologies for my comments and those of the others on this site for causing you hurt feelings and you putting yourself on the defensive.


Post# 838011 , Reply# 49   8/24/2015 at 11:29 (3,168 days old) by combo52 (50 Year Repair Tech Beltsville,Md)        
Disposers Etc

combo52's profile picture

Hi Barry, I am really enjoying this conversation about different disposer designs thanks for starting it, but you have never hurt my feelings, put me on the defensive etc, I am only presenting more information for readers of this site to consider.

 

There are really only two people participating on this thread that have worked on hundreds and even thousands [ Robert syndets2000 ] of home disposers, a lot of the rest is just armchair theory and feel good memories of long gone failed designs.

 

Please keep the personal remarks out of these discussions, thanks John.


Post# 838026 , Reply# 50   8/24/2015 at 13:04 (3,168 days old) by bwoods ()        
GE design

The GE design is an excellent one that has stood the test of time. Unfortunate that GE went the way of many other manufacturer's and quite producing disposers. Especially when they had a superior, and quite original design such as the series units.

Both their series units and induction units were high quality products. It unfortunate that only two mainstream manufacturer's (ISE and Anaheim) still exist in the U.S. today.


Well functioning and innovative machines, such as the series GE are going to evoke positive comments by users and those who performance test appliances as I do. That's the fun of the Automaticwasher.org site...to share!!

Combo52 you shouldn't let the positive comments by those of this site, in disagreement with you, cause you to have feelings of inadequacies.

Washer111, I still think you should look into the open market of disposers in your country. Almost no competition and environmentally sound. Organic remains are the main source of methane production in sanitary landfills. Household garbage disposals coupled with graywater systems, with capture of organic materials, for fertilization would certainly be positive potentials for the environment in your country.



Post# 838070 , Reply# 51   8/24/2015 at 19:24 (3,168 days old) by washer111 ()        

Just been reading around on this, out of curiosity. 

 

People's opinions are basically negative:

- "The fact that they're banned in Switzerland/New York/{insert city or municipality here} speaks for itself"

- They waste water

- They clog drains (My Father was witness to this. He was visiting friends in Canada, and the drains were clogged. They were told it was the disposer).*

- Composting yourself is better for the environment

- Mine always stinks and I can't make it stop. 

 

The best I could see was they were featured in Australian display homes during the 70s/80s. This was the same time KitchenAid Dishwashers (Like the KDS-17 with hot and cold connections another Australian found), and other American products like the GE-2800 were on the market. 

 

Another issue I can see is a lot of people who have even a small backyard space have Chickens, Compost their waste or both. This reduces what needs disposer to practically zero, aside from meat scraps and onions.. 

 

* I think this boils down to usage. Particularly whether grease(s) have a chance to be washed out with hot water containing hand-washing detergents, or stronger dishwashing detergents (the latter I have seen has cleared the run for the dishwasher in our kitchen), but also whether the person has been diligent in running enough water down the sink ("water wastage") and whether they think they can just pour grease down the drain. 


Post# 838074 , Reply# 52   8/24/2015 at 19:41 (3,167 days old) by bwoods ()        
composting

It's hard to find fault with composting. It is returning organics back to the soil!!

I assume your larger cities have an large urban population in apartments type dwellings. That might be the exception where disposers could be a health benefit over putting garbage in the trash for rodents and maggots to feed and multiply.

Does Australia you have some manner of sanitary collection of organic wastes in the larger cities and large scale composting of it in a central location?



Post# 838079 , Reply# 53   8/24/2015 at 20:08 (3,167 days old) by washer111 ()        
A Good Question

As far as I know (Not very far, and only Perth city), I don't think so. 

 

We do have recycling, before we moved out to "The Stix," it was fortnightly. They did trial weekly, but found the loads just weren't adequate. 

 

While we weren't far from the city, we did have an appreciable backyard, even with our 5 bed house on the 850sq. meter block we had. So a worm-farm was our composting heap for the majority of our time there. 

 

In Perth, Apartment blocks are still only the low-rise types in low-income areas, constructed during the 1970s and 1980s. There are some more apartments going up in and around the CBD these days, so it would be interesting to see how they handle waste. 


Post# 838085 , Reply# 54   8/24/2015 at 20:43 (3,167 days old) by Brisnat81 (Brisbane Australia)        

The problem here is more cost. A badger costs $400 plus and we paid almost $1000 for our evolution 200. We're impressed with how it performs but it's a huge amount of money when you can just throw the waste out.

Post# 838104 , Reply# 55   8/24/2015 at 23:30 (3,167 days old) by neptunebob (Pittsburgh, PA)        

neptunebob's profile picture
Barry, going off on a tangent, does GE even make electric motors anymore? It seems like they don't make much of anything if you believe their strange commercials. One commercial has some goofy guy speaking backwards about how they "turn problems up side which down" and then another where they talk about being a software company. Just what are they trying to tell people?

Post# 838118 , Reply# 56   8/25/2015 at 03:03 (3,167 days old) by tolivac (greenville nc)        

I beleive GE still makes very large industrial type motors-no more "consumer" ones.
In a vacuum cleaner-their motors are primarily moving air-they are not trying to shred food debris.even direct air vacuums where the debris picked up goes thru the fan-the fans are designed to pass the debris like you walking thru a revolving door.Shredding items is a tougher job.Look up Eidal shredders and since this is a vertical shredder kinda like a disposer-the Eidal depends on airflow rather than water to pass shredded waste thru the unit.You can see the really large motors and cutters used in these machines-and note they are belt driven-so shock loads to the motor are not passed into it.
Composting plants could do well to have waste from kitchens routed to them-the waste from the disposer is already shredded-the compasting plant won't have to shred that.Other waste they get such as dump trucks full of tree limbs,leaves and such would have to be shredded-the compost plants have tub shredders and horizontal mill shredders for those.These types of machines can shred large tree limbs,trunks,demoltion waste, and such.
Most of the disposer service I had to do was replace bad units -or try to fix them if you could.The GE ones-series and induction had the best chance of being taken apart to replace items in them.Seems like GE engineered some serviceablilty in these machines-other disposer makers didn't do this-once the thing died-replace and throw the dead one into the dumpster.ISE units often the motor could still run-but the shredders-rotating and stationary were to worn down to be no longer useful-they could pass waste unshredded.--Thus clogged plumbing.Since Aneheim and ISE is all thats left-its getting difficult to find really effective disposers-when you had more companies making them-the designs were more comptetive.Now you take what the two give you.Slow shredding or PM motors whose rectifiers burn out long before the machine really dies.Fewer companies are selling electronic parts as freely as before.I have two PM disposers that I could reserect if I could easily get the rectifiers.The motors will run off a DC power supply.


Post# 838195 , Reply# 57   8/25/2015 at 11:34 (3,167 days old) by bwoods ()        
no consumer motors


Yes, that is a main advantage of a series-wound motor in that it is perfectly at home in many environments whether it be an industrial application, or a consumer application such a vacuum cleaner, blender or a disposer. Whenever tough loads of great variability are involved they are an ideal match with self-adjusting torque to match load application and high longevity.

Yes, that's my understanding as well, that GE got out of the consumer motor business several years ago. In line with Neutron Jack's goal of making GE primarily a "service" company as opposed to a manufacturing company. Fortunately his dream didn't quite come true as he envisioned. Although from a consumer product view, it may.


Post# 838234 , Reply# 58   8/25/2015 at 15:24 (3,167 days old) by syndets2000 (Nanjemoy, MD)        

I suppose we all have our own views
I grew up with swm disposers after our induction GE unit, and I will never like them. Thats not to say ISE units are perfect, as I recall a radical design change in 2000....that cost them dearly, with all the new models leaking out of the bottom of the stator. There were the SWM GE units I would take out for leaky bearings, impellers that came off ( as in swm, and induction units, these could be field repaired on either ones ) and failed bearings, common in any unit. Then there was that small steel cutter spot welded to the inside of the hopper of the steel swms..that came off too..And lets not forget the stamped steel units, that rusted, to almost nothing.Thats been observed in any cheap unit.....sad sad sad lol
But, yea I admire your Brand loyalty, we all have our favorites.


Post# 838251 , Reply# 59   8/25/2015 at 17:21 (3,167 days old) by bwoods ()        
series wound units

It may seem that there is a brand loyalty on my part, just because of us talking about the virtues of the series wound unit. It was they just have the perfect blend of a motor matched to its tasks. And the stainless steel commponents were not as commonly used by their competitors in many of the comparatively priced units. Everything just came together to make a near ideal disposal. But not for every purpose. And for these units to still be operating today, since production ceased approximately 35 years ago, speaks volumes.

As mentioned for someone who has really heavy duty grinding needs, a large induction motor system may be somewhat slower, but capable of withstanding longer periods of grinding without the thermal overload protection engaging.

I have great loyalty to the Maytag induction units as well. Easy to replace parts and good just good performance all the way around. I wish I had replaced the pivot/hammer (impeller) in mine when it came off. They were overbuilt, just the the Maytag RR dishwashers.

It just depends on the application and the user what their preference is. Even ISE's today are pretty good units, especially compared to the alternatives. Yes they take their time on some things like bones, pits and cobs compared to the GE series wound units (and even the GE induction units) but they are well made and pretty good all around performers.

I just wish we had more competition in the disposer field in the U.S., From competition comes innovations.


Post# 838267 , Reply# 60   8/25/2015 at 19:53 (3,166 days old) by neptunebob (Pittsburgh, PA)        
Innovations?

neptunebob's profile picture
But Barry I thought GE was all full of innovations, I mean, you have the commercial about my mom works for GE and makes trees dance, and GE welcomes ideas that look like a bleached cookie monster and now they have some goofy guy who talks backward with people upside down, and how can you say GE has no innovation?

I mean this sarcastic, by the way. What is it with these commercials its not like they want us to buy anything from them?


Post# 838270 , Reply# 61   8/25/2015 at 20:05 (3,166 days old) by bwoods ()        
hehe

That's funny, Bob. Well at least we can say their ads have innovations!!!!

Post# 838282 , Reply# 62   8/25/2015 at 21:55 (3,166 days old) by syndets2000 (Nanjemoy, MD)        

My dad has a swm whirl a way
I put pork chop bone in it
Lolololol


Post# 838289 , Reply# 63   8/26/2015 at 00:12 (3,166 days old) by bwoods ()        
Whirlaway???

When was a series wound motor used in a Whirlaway? Or are you talking about the more modern Annaheim-built "Whirlaway's". These use a permanent magnet motor.

I've tested several of them. Not too good. I agree!!


Post# 838291 , Reply# 64   8/26/2015 at 00:49 (3,166 days old) by tolivac (greenville nc)        

Perhaps the toughest application I have seen for series motors is in core drills and magnetic drill presses.The motors for these tools were made by Milwaukee and Black&Decker.These motors were BEASTS!!!!They ran at 18-20A @120v.The machine had an ammeter on it to measure the motor current.I have repaired a few of these motors.They have 4 brushes in them-each brush 1" wide and communtator 2 in wide.The motor has a gearbox on it.They can take core drills to 2 ft diameter and metal drills to like 3" diameter.It was rewarding to repair one of these and test it!Watch it hog its way thru concrete!!!And 15A Bosch unversal motors on electric jackhammers.Those were cool,too!

Post# 838446 , Reply# 65   8/27/2015 at 00:46 (3,165 days old) by Realvanman (Southern California)        
Big Series Motors

Reminds me of the motors used in electrical cable pulling winches.

But the biggest beasts in the series motor department I ever worked with were locomotive traction motors. If you were standing on the steps of the locomotive, when only moving at a couple of miles an hour or less, you could hear the soft buzz of the brushes and commutator :)

Keith


Post# 838456 , Reply# 66   8/27/2015 at 06:07 (3,165 days old) by tolivac (greenville nc)        

Yes,those Milwaukee and B&D motors were also used for cable pullers.Loco motors-these could be connected in the traction circuit as either series or shunt wound motors-hence a compound wound motor.To start the train the motor is connected as series for max torque.Once up to speed the motor is shifted to shunt wind.Some older locos the shift was manual-kinda like in a car with manual transmission.Later as the technology evolved auto winding shift was used.Now its 3Ph AC induction motors on a VFD.Yes,have listned and watched lcos start a train-the brush whine is something!!


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