Thread Number: 72304  /  Tag: Modern Automatic Washers
2017 Contrarotator washer from Samsung
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Post# 955784   9/2/2017 at 19:40 (288 days old) by Brastemp (Brazil)        

Samsung post on Instagram a new washer with a 2 way directions on the drum.


Post# 955844 , Reply# 1   9/3/2017 at 06:19 (288 days old) by Rolls_rapide (Scotland, UK)        

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Previously mentioned in the IFA 2017 thread.

I still think the design is more along the lines of the 1960's Hoover Keymatic, rather than the Dyson.

The Dyson had a drum within a drum. The Hoover had a pulsator disc in the drum. This Samsung also has a pulsator disc in the drum.


Post# 956068 , Reply# 2   9/4/2017 at 10:38 (287 days old) by johnb300m (Chicago)        

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Unless the tub has an exaggerated tilt angle to make laundry rub more on the back wall, what does this really get you? Other than a complex transmission?
My Maxima has aprox. 12deg. of tilt.
Laundry doesn't much rub on the back tub......


Post# 956072 , Reply# 3   9/4/2017 at 10:52 (287 days old) by henene4 (Germany)        

It dosen't take much to get that working. With 2 motors, you don't need a transmission, just a hollow outer shaft with a bearing and another shaft inside it. Then you have 2 drive wheels on the back.

And it dosen't take much to cause friction there. Keep in mind that in your washer, everything moves on way.
There, you have 2 opposing rotations.

It's like a highway back on back vs a head on collission.

Post# 956073 , Reply# 4   9/4/2017 at 10:53 (287 days old) by johnb300m (Chicago)        

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Jeez, well I don't know what's worse?
Two motors or a geared trans?

I guess we'll wait till the 3rd party cleaning tests and reviews come out.

Post# 956078 , Reply# 5   9/4/2017 at 11:22 (287 days old) by henene4 (Germany)        

2 motors are certanly better, the bearings are the biggest question mark about it.

Transmissions were Dysons problem, failingoiften and being damn expensive (900+ I've heared).
Modern inverter motors fail rarely and often only after anything else on that brakes.

Post# 956081 , Reply# 6   9/4/2017 at 11:51 (287 days old) by Rolls_rapide (Scotland, UK)        

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I thought the epicyclic gearbox of the Dyson Contrarotator was supposed to be one of its crowning glories.

Problems with that would explain why field engineers locked the drums together. A bit like Hoover service technicians disabling the problematic pulsator on the Keymatics.

I expect we'll see Samsung engineers disabling their version, in due course.

Post# 956091 , Reply# 7   9/4/2017 at 12:31 (287 days old) by henene4 (Germany)        

Thing is that if it is a gearless shaft-in-shaft system, diabeling is kind of impossible as i don't see what could physicly lock both parts together.

Post# 956103 , Reply# 8   9/4/2017 at 13:39 (287 days old) by Paulinroyton (B)        
Samsung Washer

Post# 956107 , Reply# 9   9/4/2017 at 13:53 (287 days old) by Rolls_rapide (Scotland, UK)        

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Here - I've just had a thought!

If the drum is on a high spin speed, there must be some way of locking the back wall in synchronisation with the rest of the drum, else clothing would be torn apart.

Maybe the two motors will sync-up electronically (via software and position sensors).

And maybe that'll be the route they take if they do decide to disable the contra-rotation... just get both components to move as one, in the same direction.

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