paul wrote:
half way through this build so next best thing is going to be a mc21 flywheel or offset woodruff key
does anyone know how much offset is equivalent to putting the 21 flywheel on the 28?

I believe that the Mc21 flywheel has about 2 degrees more static advance.
You can swap to a Mc21 flywheel, buy a Tyga pre-made woodruff key or machine off your own woodruff key in 0.1mm increments until you find the desirable performance.

Please, keep in mind that more ignition advance radically leans the fuel mixture. Mc28 bikes are way rich to start but don't count on that and do a spark plug chop.
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