Jay C, could you turn a brass flywheel to press fit over the outside OD of the top drive cog...or would that block an allen set screw to hold the cog drive on?
I love what you guys make..even though it's targeted only towards scale and 2 rail...maybe some day enough of us 3 railers would make a need for you to turn some long flange wheels for us to use with your drives...at least we wouldn't need insulated wheels...