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Troop sleeper step traps
http://www.rypn.org/forums/viewtopic.php?f=1&t=41152
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Author:  hytwr1 [ Mon Sep 18, 2017 11:10 am ]
Post subject:  Troop sleeper step traps

Let's try this again. I don't see where the first message I sent posted.

I am digging into the step traps on our troop sleeper. Were these sprung like normal steps or hand cranked? The rotating shaft on ours look to be designed for a handle of some sort.

Does anyone with one of these cars have a working trap?

Thanks
Bill

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Author:  eze240 [ Mon Sep 18, 2017 11:49 am ]
Post subject:  Re: Troop sleeper step traps

Looks pretty standard to me...it should just hinge there... It might have a spring to pop it up a bit, but not necessarily...should just lift up and engage a latch to hold it upright.
If it's not been moved in a long time, it's probably stuck or stiff...

Author:  Howard P. [ Mon Sep 18, 2017 1:27 pm ]
Post subject:  Re: Troop sleeper step traps

The square end is simply for a wrench used to adjust the spring tension. No hand crank.

Howard P.

Author:  Dennis Storzek [ Mon Sep 18, 2017 1:29 pm ]
Post subject:  Re: Troop sleeper step traps

Never worked on one of these, but my first impression of the square head is it is used to tension the spring.

I see Howard types faster than I do.

Author:  hytwr1 [ Mon Sep 18, 2017 1:44 pm ]
Post subject:  Re: Troop sleeper step traps

Howard P. wrote:
The square end is simply for a wrench used to adjust the spring tension. No hand crank.

Howard P.


I have never worked on one either.

Thanks for the info Howard and all.

I guess I just never paid much attention to them before.

Bill

Author:  Catalpa [ Tue Sep 19, 2017 8:23 am ]
Post subject:  Re: Troop sleeper step traps

To further the discussion a bit, the general trap door practice, but not specifically for troop sleepers, was that the square head was for adjusting the torsion spring pressure after a rounded headed pin was removed (knocked out with a punch) , and was reinserted in one of a stepped series of holes to tighten or loosen the spring tension, as desired. I can't tell 100% but it looks like the head(s) of one of the dowels protruding on the casting. There are at least a couple of troop sleepers restored and on display, maybe more that I am not aware of. There is one at the B&O Museum here in Baltimore (MD) and another at the Mad River and NKP Museum in Bellevue, Ohio. As Pullman built them, there may be drawings and or specification information at the Pullman Library in Union, Illinois.

G.F.Payne

Author:  Topfuel [ Tue Sep 19, 2017 11:13 am ]
Post subject:  Re: Troop sleeper step traps

And the "spring" was not usually a coil spring, but several pieces of flat spring steel that were twisted (by tightening the square nut) to obtain the desired spring tension to lift the trap.

Author:  Al Stangenberger [ Tue Sep 19, 2017 11:49 am ]
Post subject:  Re: Troop sleeper step traps

I repaired a similar trap on a car (Salt Lake & Utah 751, Niles Car Co. 1916) at the Western Railway Museum a couple of years ago.

All of the above comments are correct, the mechanism is quite simple. Just knock out the pin and all the parts come out.

The trap on 751 had a broken spring. I purchased new spring steel strips from McMaster-Carr.

Author:  hytwr1 [ Tue Sep 19, 2017 5:17 pm ]
Post subject:  Re: Troop sleeper step traps

Thanks for all the feedback and info.

I think I can see some of the flat steel springs in one of them where the metal sleeve is rotted away. Since I'm going to have to disassemble steps to replacing side sheet I figure I'll take the traps off and rebuild those mechanisms.

I did not see anything in the archives about this and a Google search popped up with all sorts of patent info on different trap designs. So maybe this will help someone else out in the future.

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