Six wheel trailing trucks

L Beckman · **Posted:** Thu Mar 13, 2003 5:29 pm

I know that the C&O and Virginian 2-6-6-6's had six wheel trailing trucks. But I believe that there may have been an earlier application of a six wheel trailing truck on a locomotive (perhaps PRR?) Does anyone know what locomotive first carried a six wheel trailing truck, who built it and when?

Thanks.

Les Beckman (Hoosier Valley Railroad Museum)

midlandblb@cs.com

Don Wirth · **Posted:** Thu Mar 13, 2003 5:35 pm

Pennsylvania's steam turbine was a 6-8-6.
> I know that the C&O and Virginian
> 2-6-6-6's had six wheel trailing trucks. But
> I believe that there may have been an
> earlier application of a six wheel trailing
> truck on a locomotive (perhaps PRR?) Does
> anyone know what locomotive first carried a
> six wheel trailing truck, who built it and
> when?

> Thanks.

> Les Beckman (Hoosier Valley Railroad Museum)

frisco1522@earthlink.net

Randall Hicks · **Posted:** Thu Mar 13, 2003 6:07 pm

> Pennsylvania's steam turbine was a 6-8-6.

But the S-1 was earlier, and it of course had a six-wheel trailing truck (6-4-4-6). I assume you're asking about "normal" locomotives; a large number of suburban tank engines had six-wheel trucks under the tender. The NYC had big 4-6-6Ts that I think look like a J that was telescoped in an accident.

It's really too bad the S-1 wasn't preserved!

Dave Stephenson · **Posted:** Thu Mar 13, 2003 6:40 pm

Les -

PRR's S1 6-4-4-6 duplex was built in 1939 by Altoona, two years before the first H8 for C&O. I believe its design was a joint effort between commercial builders and PRR.

L Beckman · **Posted:** Thu Mar 13, 2003 10:51 pm

> Les -

> PRR's S1 6-4-4-6 duplex was built in 1939 by
> Altoona, two years before the first H8 for
> C&O. I believe its design was a joint
> effort between commercial builders and PRR.

Dave (and Randall and Don):

Thank you very much. The Pennsy S-1 duplex is the locomotive I was trying to think of. Appreciate your help!

Les

midlandblb@cs.com

Ted Miles · **Posted:** Fri Mar 14, 2003 12:37 am

And that brings up a question anout another kind of six wheel truck.

I just read about a 3 axel passenger car truck that is supposed to weigh 11 tons. That would be 22,000 pounds for one truck; could this be right? Are/were they talking about the pair of trucks on the passenger car?

ted_miles@nps.gov

Paul D. · **Posted:** Fri Mar 14, 2003 10:31 am

A three axle outside swinghanger truck with large central bearing is a massive piece of steel. It's been awile but I think that a disk brake wheelset with bearings and boxes weighs close to 2 tons alone. So 11tons for the complete truck is not out on hand I think that the UP's 6wheel, OSH central bearing truck had a capasity of 90,000 pounds.

> I just read about a 3 axel passenger car
> truck that is supposed to weigh 11 tons.
> That would be 22,000 pounds for one truck;
> could this be right? Are/were they talking
> about the pair of trucks on the passenger
> car?

pfdx@aol.com

Ted Miles · **Posted:** Fri Mar 14, 2003 12:50 pm

Paul,

Tahnks for the info.

I am glad I don't have to pick up any of those parts and pieces!

ted_miles@nps.gov

Howard P. · **Posted:** Fri Mar 14, 2003 6:46 pm

> Paul,

> Tahnks for the info.

> I am glad I don't have to pick up any of
> those parts and pieces!

Actually, that's a bit on the light side. By actual measurement, while being lifted by a hydraulic crane with a strain gage, typical Pullman heavyweight trucks are 13 tons each. This was confirmed in 1991 when RMNE moved 5 heavyweights out of Jim Bradley's backyard in Stonington, CT. The truckless body of sleeper "Breslin Tower" weighs 57.5 tons. The other cars were slightly lighter.

hpincus@mindspring.com