[snellemin]

The glue part is what I'm still trying to master. There are so many glues available and I'm still finding out what will work and what won't. But so far I have used 3M #77 and it worked great on the foams. My drill press is working overtime cutting up old rims. So far the tires don't balloon at all, freewheeling at max unloaded speeds. 180 Grit sandpaper is what I use for creating a rounded edge and flat contact surface.

The spur is connected to a traxxas adapter, which eliminate the slipper all together. #3693 is the traxxas partnumber.

That bumper/skid mod works out great for me. I don't worry about breaking little wheels at high speed tumbles. That plastic bumper is cheaper then a set of wheels and bearings.