This sheet will calculate RPM to Speed in KLM and MPH for the 800cc Vulcan, I believe there are 2 gearbox types so check which one you have. also attached is a generic 6 speed calculator that can be used for any bike and is currently fill with the data from the Kawasaki ZX7R. <<800cc.xls>> <<6_speed.xls>> Bob Wilson 0733063402 Robert.Wilson@Australia.Boeing.com