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Post details of your rolling stock developments - locomotive, carriages, DMUs, etc.

Experimental Janney Knuckle Coupler

Postby jesse6669 » Tue Sep 11, 2018 4:39 pm

For those of us in North America or Australia (or other parts of the world whose railways use a knuckle coupler), I always had a bit of a bone to pick with the stock T-gauge couplers.

I designed one several years ago but the materials on Shapeways either weren't strong enough (FUD), or the bronze I tried was too strong and expensive. But now, the "professional plastic" I tried recently actually works pretty well. It is strong, and somewhat flexible, and cheap. The coupler I printed is about 100% oversized compared scale, but this was a compromise I made for strength. The coupler works as a press-fit--it isn't too firm and not too loose, but I haven't tried on any trains yet. Material is grainy but after paint looks a bit like cast iron (you can see I painted my test pieces a rust color). I am going to try some smaller versions and see how they work..

Jesse
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jesse6669
 
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Re: Experimental Janney Knuckle Coupler

Postby jesse6669 » Wed Sep 12, 2018 3:31 pm

I reduced the size a bit, and added draft gear. I'm waiting for test models from Shapeways. Here's a rendering on my revised hopper car:
Coupler Render.jpg
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Of course the draft gear means body mounting, which will surely be problematic, but can be overcome I'm sure.
jesse6669
 
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