Thursday, October 24, 2013

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How to Make a Motorcycle Truing Stand

How to Make a Motorcycle Truing Stand

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 $150, 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.

Instructions

    1

    Bolt the front of a motorcycle swing arm vertically in a bench vise. Level the top of the swing arm with a bubble level.

    2

    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.

    3

    Tighten the rear axle nut to the axle with a box wrench.

    4

    Attach a magnetic dial indicator to the vise to check for run-out error. Attach the magnetic dial indicator to the swing arm to check for wobble.