I never knew another brand of washer that had as many built-in pauses as perforated tub Filter-Flo's. Our 1962 V-12 had a 1 minute and 45 second pause between Wash agitation and the first spin with 4 bizarre clicks and pings that I now know were the metal tabs in the timer being tweaked by the cogs and, yes, I timed it once. There was a long pause between the first spin and the rinse fill, then another long noisy pause between rinse agitation and final spin.  As a young kid, I used to hold the lid open as high as it would go without activating the safety switch and listen for the series of those noises. I knew that 10 seconds after the last delicate "ping", spin would start and boy was it loud on that machine.

The next Filter-Flo we had, which was a 1973 machine also included a gratuitous pause between the rinse fill and the rinse agitation. You could hear the pressure switch "ping" when the water reached its pre-set level, but then the machine would just wait for about a minute before agitation kicked-in. WTF?There was no unusual pause, however between the 2nd spin period and the extra-rinse cycle that I was aware of. I must assume, now with what I've learned from some of your threads here that it has to do with how the timers for these machines were manufactured. All later FF's seemed to do that. Now, wouldn't you think that would be a defect worth reporting on for a magazine like Consumer's Reports???

One of the things I loved about the 1958 Frigidaire Unimatic Custom Imperial that came with a house my Parents bought in the Hudson Valley, was that there were absolutely no pauses between anything. That washer went straight from the overflow at the end of the wash and rinse cycle into a high-speed spin and then would start filling for the rinse cycle while the tub was winding down. No wasted time with that machine!

Some (but not all) of the reason for those pauses came from machines that had reversing mechanisms vs. solenoid operated drive mechanisms.  If the mechanism has to reverse, the motor had to come to a complete stop before it could be reversed.  On older incremental timers this meant that the pause would be 1 increment between agitate and spin.  On Maytags from the 60s & 70s this was either 30, 45 or 60 seconds depending on the timer design. I have no idea why there would be an engineering need for a pause between spin and fill OR between fill and agitate, though.

Most of the WP/KM belt drive machines just chug on from one function to another with no pause whatsoever.  On my 1970 70 if have have the second rinse selected it starts filling as soon as the motor shuts off from the spin.  The only pauses that I notice on the BD machines is in the case of a warm rinse fill that fills the tub up before the 2-minute timer increment.  The machine does pause there until the two minutes is up.  I am sure there are exceptions on BD machines, but on the whole they move directly from one function to another.

The Maytag AMP machines were the same way.  Since the spin function was solenoid operated it went directly from agitate to spin.  In fact on some of those machines the mechanism is so powerful that it actually makes a clanking sound that almost sounds like someone ringing a fight bell!