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I'm hoping someone here can offer some insights into how I can power this project.  It is a flatcar used as a line maintenance car, with a center enclosed portion with a trolley pole.  Since the trucks are under the unenclosed portions of the car, I can't use a conventional power truck with a can motor.  What I think I need to do is put the motor in the enclosed portion and then have a drive shaft running to one of the trucks.  Since this doesn't have to pull anything, having just one axle powered would probably work.  This is a 3-rail project, so the Northwest Short Line drives would not seem appropriate, as they only come with scale wheels.

 

Any suggestions would be greatly appreciated.

 

BRUCE

 

 

st8

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Originally Posted by Arthur P. Bloom:

I believe that K-Line diesels had trucks that were powered with small can motors between the axles. Take a look at their model of the MP-15.

While the K-Line trucks do exist in such a configuration, they are really too big for this application. The truck bolster sits at locomotive height, and the wheels are too big for any sort of street railway model.

 

I do believe NWSL has 3-rail compatible wheelsets. Whether they can make them available ready to be geared to a typical 2-rail powertrain is still up in the air.

 

I saw a write-up by one hobbyist who used HO scale wheelsets bored out to fit O-gauge axles and used them as pulleys for a rubber band or spring-belt drive for a wheelset equipped with a pressed-on drive gear. Any of these work-arounds would require being able to remove and reinstall wheelsets.

 

One last possibility would be the power trucks GHB international makes to fit the Corgi non-powered PCC models. The sideframes can be removed and something else mounted in their place, but whether or not the wheelbase would work for your application is another question.

 

---PCJ

Last edited by RailRide

I found some listings for their O scale wheelsets for 3-rail:

 

http://shop.osorail.com/category.sc?categoryId=57

 

That brings up a small measure of hope, as their 3-rail offerings appear to be made in a number of wheel sizes, the smallest of which are 26". Overall, they don't really offer a ready-to-run solution, although I believe a 3-rail power train can be assembled from their parts, it requires considerable knowledge on the part of the hobbyist.

 

One Forum member was experimenting with a 3-rail power truck made largely of 3D-printed gearbox and some gears taken from HO scale locomotives. He got so far as to demonstrate a test model powered by a battery, but I don't know of any further developments.

 

---PCJ

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