Re: How many rivets on a wheel is "too much"?
 

Not that much heavier than stainless for the size, and the price of free makes it worth trying them on a practice robot.

I actually design aircraft engines these days, we use a lot of Inconel solid rivets in various areas of the engines to attach spring clips and nut plates.

Re: How many rivets on a wheel is "too much"?
 

We use shoe goop as an adhesive, and drill holes for safety wire to "strap" across the tread material. The wire is then twisted tight near the wheel core, and pulls in far enough not to contact the playing surface. Well worth the extra effort. Haven't lost a tread yet in the 10 years we've been doing this.:)