Don't bother. There's nothing wrong with properly maintained ball bearings, and whomever is spreading the myth about highway speed needs to come talk to my garden this spring- - - - -I'll save a fortune on fertilizer! The only downside to ball bearings is the cost, but if you clean and repack them every couple of years, they will last for decades.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!