My C12 and S663 (actually the ZC-880's motor) are fitted with the 240v equivalent to the 5 Amp (2.5A on 240v) Pancake motor, and they perform superbly, I've been told that anything bigger than 5.5A (120v) is a waste of power as they don't really do any more in terms of cleaning, and are more likely to toast your belts...
The blender motors are still excellent motors for domestic use though, but the Pancake just has that little bit more to it, and I love the sound they make...
Eureka used 3.5 pancake motors untill 1978 when the ESP was introduced, so mister Parkers Eureka was deff a 3.5 pancake motor. and whats strange is eventough machines like taht were two spees all the model tag woud say is 3.5Amps....and a bit later on...ive seen metal based with 3amp motors, and some very sparce odd ratings like 3.2, but all of the higer line two speed models unitl 1978 were 3.5
the first ESP was the brandywine TOL coraway, and intead of having a high low setting, they had "ESP" on one side of the switch, and the other side read "normal"
in a way Eureka kinda had Hoovers Powersurge idea before hoover did, in the way that i was depicted to use the "ESP" setting when u needed more power....
im attaching this pic from the Eureka slash Lux co in illinois, if you read the text on this sectch it says "the new ESP", and it is dated 1978
It sounded like a pancake motor, but I wasn't sure so I thought I would ask. Speaking of Jeff Parker, I noticed that he hasn't been on Vacuumland in a long time! I wonder what happened to him?
About Jeff: he is very much a private person. I would think almost all the most-knowledgeable of vacuum historians wanted to take time off the VCCC and be private people. Just my 2 cents, however.