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Posting Leader
Posted 30 October 2023 - 09:44 PM
FYI: The Pittman '65' series IS smaller with an armature about 13mm diameter which was/is used to hop-up the DC 195/196 and DC60-63 series inline type motors.
The Pittman 85/Ram/Destroyer are virtually interchangable parts. The armature is much larger in diameter than the '65' series. The Ram 850 has the thicker laminations of the other brands and the '857' has very thin lamination for improved magnetic effect.
Larry D. Kelley, MA
retired raceway owner... Raceworld/Ramcat Raceways
racing around Chicago-land
Diode/Omni repair specialist
USRA 2023 member # 2322
IRRA,/Sano/R4 veteran, Flat track racer/MFTS
Host 2006 Formula 2000 & ISRA/USA Nats
Great Lakes Slot Car Club (1/32) member
65+ year pin Racing rail/slot cars in America
Grand Champion Poster
Posted 31 October 2023 - 03:12 AM
Pittman also made an improved motor with thinner lams, the DC-84, but it must have come out very late in the game, because I don't remember hearing about it at the time. Will try to get a photo up when I can.
Don
Posting Leader
Posted 31 October 2023 - 08:34 AM
The thinner field lams made it easier to taper them down to the length of the arm stack. A practice most pros did.
