Re: Helper Locomotives

Msg # 993 of 1000 on RelayNet Trains/models/railways etc
To: ALL, From: BLADESLINGER@EARTHLINK.NE
Time: Sunday, 8-12-7, 3:27
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--- UseNet To RIME Gateway @ 8/12/07 3:26:46 PM ---

On Sat, 11 Aug 2007 08:52:44 PST,
mojaveg@mojaveg.lsan.mdsg-pacwest.com (Everett M. Greene) wrote:

>Seems like a good description in an idealized situation.  Since
>the rail lines are almost never completely consistent grades,
>the neutral point will fluctuate as the grade varies.  I've seen
>descriptions of operations where the front units will be braking
>while the more rearward units will still be pushing/pulling at
>full bore as a long train goes over a hill.  So there is some
>art to getting the power balance correct at any moment.

You do not want the helpers pushing while the headend is braking, as
this could lead to jack-knifing.

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