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Re: Locomotive Gear Ratios
Author: Dr Zarkoff
Date: 09-30-2008 - 12:08

>65:12 gearing until EMD improved their traction motors to make them rugged enough to handle drag speeds.

It was question of using better insulation materials, which provided better heat dissapation, and changing to TIG welded commutators, which avoided the problem of the solder melting and being thrown out when the motor got hot.

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Subject Written By Date/Time (PST)
  Locomotive Gear Ratios Jeff Johnson 09-25-2008 - 23:01
  Re: Locomotive Gear Ratios night rider 09-26-2008 - 01:16
  Re: Locomotive Gear Ratios GunnerV 09-26-2008 - 14:42
  Re: Locomotive Gear Ratios shortline sammie 09-26-2008 - 19:40
  Re: Locomotive Gear Ratios Rich Hunn 09-27-2008 - 09:50
  Re: Locomotive Gear Ratios George Andrews 09-28-2008 - 12:09
  Re: Locomotive Gear Ratios SP5103 09-29-2008 - 12:24
  Re: Locomotive Gear Ratios Dr Zarkoff 09-30-2008 - 12:08
  Re: Locomotive Gear Ratios Earl Williams 05-21-2009 - 15:56


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