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webBikeWorld Chain Monkey Review

Discussion in 'Motorcycling News' started by NetriderBot, Oct 2, 2016.

  1. #1 NetriderBot, Oct 2, 2016
    Last edited by a moderator: Oct 2, 2016
    The Chain Monkey is a tool to help set the correct motorcycle chain slack during a chain adjustment.

    It's made from plastic with an adjustable metal screw.

    Follow the instructions in the kit and set the bottom of the nut to your correct optimal chain slack number.

    Then tighten the rubber stopper on the bottom.

    Unscrew the threaded rod, place the Chain Monkey over your chain and tighten until the rubber stopper meets the plastic.

    This puts a kink in the chain.

    Then adjust the chain by using the nuts on the swingarm. Adjust until the chain is very tight, then tighten the swingarm nut(s).

    Remove the Chain Monkey and the chain should be within spec.


    There are a couple of degrees of freedom here: how closely the Chain Monkey is set; whether or not the rubber stopper has moved and how tight to make the chain using the motorcycle's adjustment screws.

    But, with some practice, it's not too difficult to get it right the first time.

    Also, the black plastic tip that pushes on the chain wears very quickly. I noticed this right away even after the first use.

    So while the Chain Monkey isn't a perfect solution, it does have a few advantages. The alternative is using the Ol' Standby method described below: use a millimeter rule to measure slack, then adjust, then check.

    So the Chain Monkey can theoretically eliminate one step in the process.

    Worth it? Probably so, especially if you do a lot of chain adjusting.

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