But if that kind of kit could be built, it would allow one to manipulate the diabolo even when holdin on to it, and there still would be the spin that keeps it stable. Whole new dimension to contact diabolo I say.. And you wouldn't even have to run after the diab when you drop it, great for lazy people like me..
kinetically charged light kits yet either.
this is quite old idea and allmost forgotten one.. (something same with those thoughts above)this is main purpose what it is for.. infinite sprinkler.. of course it has other good abilities as well..
Who said metal bearings - these days you can get plastic bearings (usually PEEK) - these also have the advantage of being leightweight