[AT] Old shop lathe motor-- motor questions for you "experts"

[carl gogol]

The old motors were much larger for two reasons, first the insulation could 
not tolerate the temperature today's motors routinely run at, so the motor 
frame was made larger to have more surface area for heat dissipation. 
Secondly, the insulation on the wires was thicker because it could not 
tolerate the voltage without being thicker than today's insulations.  To get 
the same magnetic induction (amp-turns) on an old motor took more space 
because the wires could not be packed as close together.  I doubt that the 
old motors were any better, especially with today's bearings and oils, they 
just look like they should be because we all think size matters.  --- what 
do you expect from a bunch of FATGs?
Carl Gogol
Manlius, NY
AC 170D
(2) AC D-14, AC 914H
Simplicity 3112 & 7116
Kubota F-2400