From: ahk@chinet.com

Larry Sheldon  wrote:
>On 9/4/2016 15:09, Adam H. Kerman wrote:

>>Even in interurban days, we've read that CNS&M RR, which did operate at
>>grade through suburban territory, lost plenty of motors during winters
>>with heavy snowfall.

>>Motors need to be cooled. They need air intake. They need to be in a place
>>under the railcar where they can provide traction. It's just the nature.

>Don't diesel engines have the same problem?

>>Anyway, CTA spec'ed how the motors were ventilated. It wasn't the
>>manufacturer's problem.

>I think the manufacturer has a moral responsibility to say "We are NOT
>going to put our name on a defective design like that."

Well, the Pullmans (2000s) and first order of Budds (144 in the 2200s)
had unforced ventilation. That wasn't adequate given the heavier cars, so
CTA spec'ed forced air ventilation for the traction motors on the Boeing-
Vertol cars (2400s), which sucked in snow that awful winter. But it didn't
draw from the top.

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