@Sarah posted:Why don't you modify the lego car bolster and use the unaltered 3-rail truck? I mean it work's for the knuckle couplers - just trying to understand your motivation :-)
Well, I have already done a little bit of that.
The objective is simply to build a fully interchangeable (o gauge) car as much out of Lego as possible.
This hopper will be my next adventure.
Brick Model Railroader has made a huge leap by offering coupler assemblies with Kadee couplers.
They did this to improve on the magnetic couplers used on standard lego trains.
But to me it's an invitation to step things up and make a full brick built car, including the trucks. This just combines several things I enjoy.
Now that I have a source for the axles/ wheels worked out, I am studying how to modify the 4 wide truck plans into 3 wide, and ordering parts. I have plenty of lego bricks, but the cleanest way to do this involves some relatively newer bricks that I don't have.
Once I get past the truck assemblies I will probably start a new thread for the rest of the build in the 3 rail sub forum. When complete though, this car should be able to run on 2 rail or 3 rail tracks.
