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Re: SDP40F SP speed
Author: Hot Water
Date: 06-12-2017 - 13:18

CCdW Wrote:
-------------------------------------------------------
> If there isn't an over speed trip and the
> locomotive continues to accelerate beyond the
> design speed what are the consequences to the
> locomotive? For example what part will fail? I am
> not referring to track here just the locomotive.
> Will bearings fail or will something electrical
> over heat or what?
>
> Thanks

With the DC traction motors in these units, the excessive RPM of the armature can, and has, raised/lift the copper bars in the commutator. The end result is a "bird nested" traction motor. Technically, nothing else on the locomotive would be effected by excessive train speed.

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Subject Written By Date/Time (PST)
  SDP-45 top speed? HUTCH 7.62 06-09-2017 - 18:20
  Re: SDP-45 top speed? Hot Water 06-09-2017 - 18:29
  Re: SDP-45 top speed? HUTCH 7.62 06-09-2017 - 18:37
  Re: SDP-45 top speed? Cprr 06-09-2017 - 18:54
  Re: SDP-45 top speed? Nussel Snouts 06-09-2017 - 21:18
  Re: SDP-45 top speed SP Nudge 06-10-2017 - 11:33
  Cascade Schedule Pdxrailtransit 06-10-2017 - 12:00
  Re: Cascade Schedule Sgt. Joe Friday 06-11-2017 - 14:56
  Re: SDP-45 top speed SP OPRRMS 06-10-2017 - 18:10
  Re: SDP-45 top speed SP WAF 06-11-2017 - 08:30
  Re: SDP40F SP speed Tim 06-11-2017 - 15:04
  Re: SDP40F SP speed George Andrews 06-11-2017 - 17:01
  Re: SDP40F SP speed CCdW 06-12-2017 - 13:10
  Re: SDP40F SP speed Hot Water 06-12-2017 - 13:18
  Re: SDP40F SP speed CCdW 06-12-2017 - 13:58
  Re: SDP40F SP speed OPRRMS 06-12-2017 - 16:52
  Re: SDP40F SP speed Dr Zarkoff 06-12-2017 - 19:14
  Re: SDP40F SP speed Nudge 06-12-2017 - 18:07
  Re: SDP40F SP speed Dr Zarkoff 06-12-2017 - 19:19
  Re: SDP40F SP speed ex-BN 06-12-2017 - 19:52


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