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shimmy

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About shimmy

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    Ireland

  1. Valve seat cutter

    shimmy replied to 250bandit's topic in CRF250R

    http://www.zoomfactory.co.uk/

  2. crf valve train

    shimmy replied to Ron Hamp's topic in CRF450R/RX

    Will a valve with a bigger clearance not open less and therefore have a slower closing velocity, or is it the fact that a valve with a smaller clearance will leave the closing ramp later and therfore have a slower closing velocity?