I thought I'd read something like that before...I guess it was here. :grin: I didn't realize that old thread referenced the very same article!
I recalled the old thread mentioned steel or lead shot, which
would be too much weight flinging around for our bitty tires. The article mentions Airsoft BB pellets, though, which are very light (.12g) and plastic. Why wouldn't the concept scale down, if it works at all? I avoided physics classes like the plague in school, a decision I've often regretted. If any science types can point me right, I'd appreciate it. My understanding of centripetal force and center of motion is rudimentary, but it seems like it'd work as an active balance in theory.