Not much to show yet but thought I better start taking some pictures, otherwise I get nearly finished and don't have any pictures at all.
Tube from trash can at local truck and tractor place. Somebody know what this would have been used on? Tractor tire I'm guessing, seems too big for a truck tire.
Need to figure out how to make the belt tensioner/tracking adjuster. And, I tried a simple test of the slot car motor and crown gear, but it is geared way to high for the application. Too bad, it would have fit real nice on the side or even inside the belts. Guess I will need to find a larger gear and or slower torquey motor. May end up trying a servo motor.
Oh, a bit more on the "design". Length determined at this point by the size of the inner tube that I got out of the trash can at my nearest truck and tractor tire place. Aluminum sides are 1/8 x 1/2". I will add support structure once the final length is determined. I may try something shorter either with a smaller tube or splicing what I have.
Jim