wheel slippage

NW Mailing List nw-mailing-list at nwhs.org
Mon Dec 10 22:42:08 EST 2007

Photo of loco attached in happier days. It's back in service AFAIK.

Dave Stepheson

----- Original Message ----
From: NW Mailing List <nw-mailing-list at nwhs.org>
To: NW Mailing List <nw-mailing-list at nwhs.org>
Sent: Monday, December 10, 2007 4:08:17 PM
Subject: Re: wheel slippage

In addition to the rail burn problem mentioned by Harry Bundy, there has been at least one instance of uncontrolled slipping resulting in motion damage. A few years ago in the UK, on a steam-hauled excursion, a poorly trained engine driver allowed his 4-6-2 to slip so badly that one or more rods bent or were broken. This not only destroyed the motion, but it also seriously damaged the cylinder casting. I believe that the loco is serviceable again, but I think that they had to have the cylinder assembly recast. (Can you imagine trying to find someone to cast a cylinder saddle in the US today?)

On a modern US loco with cylinders integral with the engine bed, this would be a disaster!

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