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Can someone please tell me what a Fly wheel key is?

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  • Can someone please tell me what a Fly wheel key is?

    Yo i've been trying to figure out how this thing works for the longest time now. How does it work? All I see is that it increases top-end speed but where the hell does it go on the flywheel. No pictures of it anywhere applied on a go-ped.
    Attached Files

  • #2
    There is a groove on the flywheel shaft the key slides into, it basically locks the flywheel to shaft so there is no slipping when the motor is running. I thought my 460 needed one on the clutch side but it is not needed when the clutch is torqued down. I believe the flywheel side has one at least on the 460 anyway. Someone can correct if I’m wrong...


    • #3
      Well the flywheel key pictured is the stock one that should already be installed on Zenoah/CY engines, it sits in a cutout on the crankshaft and your flywheel has a groove that slides over it. This is an advanced flywheel timing key for Zenoah LH/G43L engines and gives a slight power boost, but I kinda doubt it adds much if anything to top end speed.