Back Wheel

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There are several variations for setting up a trials rear wheel. It includes the axle adjustment, brake arm pivot, brake rod or cable, chain tensioning, wheel alignment, chain guarding. Snail cams seem like the way to go for easy adjustability, a thin aluminum guard plate to keep the oily chain off the soft wide knobbly tire, and an underside roller/block pushing up with spring action to eliminate slack.

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