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nrandal

Diesel Engine for popular wooden track systems

by nrandal Mar 27, 2014
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Fun model, kids love it! Negotiates the tracks much better than the fixed axle units found on most sets, and leaps better than fixed six axle units like "Thomas". Overall height is no different than others currently out there, so tunnel service is possible. Seems longer than a Thomas due to the axles being closer to a real locomotive configuration, but is not much longer in reality. I need to work on getting couplers (magnets) installed to make it more useful.

I messed up a picked up a 5mm bolt instead of a screw for the truck pivot pin, but worked ok. I did not need to drill out the wheels any for 3mm screws.

In my case, US fasteners would have worked fine, and would have been cheaper than metric equivalents. #4 (4-40) for the wheels and truck travel pin, and a #12 for the truck pivot should work. If you printer makes smaller holes, try a #10 for the pivot.

Ever come up with a solution for the magnetic buffers? I'm designing my own set of trains at the moment so advice would be great

My plan was to get ring magnets and try different bolts. a carriage bolt might work with the rounded headed.

A carriage bolt may work. The best idea I could come up with was to buy plastic 'chrome' buttons or covers, available in most fabric stores and use strong little neodymium magnets underneath. The magnets are cheap, around 10 or 20 or so for only a couple of quid on eBay.

This was so great. Thanks so much!

I LOVE this design. I really want to give one to my nephews with their names on it. Is there any chance you could share a dxf so I can modify it with their names please?

I'm going to do the same thing! I just used Tinker cad to emblazon Their initials on one side