Truing stands are used to check the wobble and run-out of motorcycle wheels. A recently constructed or suspect wheel is rotated on an axle on a stand and the side to side and up and down movement of the rim is measured with a dial indicator or other device. Well-manufactured truing stands cost as little as £97, and if you intend to build multiple wheels they are worth the investment. Some skilled wheel builders can make do with a pair of plastic milk crates and a wire clothes hanger. For a similar DIY design you can use a swap meet swing arm and other cheap, used motorcycle parts and it should cost about a third as much as a manufactured truing stand.
- Skill level:
Things you need
- Bench vice
- Motorcycle swing arm
- Bubble level
- Rear axle
- Two 2 inch washers
- Two bearing spacers
- Two sealed rear bearings
- Rear axle nut
- Box wrench
- Magnetic dial indicator
Bolt the front of a motorcycle swing arm vertically in a bench vice. Level the top of the swing arm with a bubble level.
Insert the hex end of a used, unbent motorcycle axle through, in order, a two inch washer, the swing arm axle hole, a bearing spacer, a sealed wheel bearing assembly, the wheel to be trued, a second sealed wheel bearing assembly, a second bearing spacer, the other side of the swing arm and a second 2 inch washer.
Tighten the rear axle nut to the axle with a box wrench.
Attach a magnetic dial indicator to the vice to check for run-out error. Attach the magnetic dial indicator to the swing arm to check for wobble.
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