Something like that would be great. There is also another design that can used. It uses the axle or something to act as an axle which is smooth. Each side then sits on 2 metal disks which turn on bearings. The axle just sits on top of these and that is it. This type of balancer is very accurate. It is used on model aircraft propellers which are very light. Just a build a bigger version. but however you do it, a balancer is great to have. I should get some tire irons too! tires are expensive enough without having to pay and extra 30 bucks to mount and balance.
