Allow me to break in here, just to keep in touch with the GPR-talk!
I could use a power curve for a original 8-9 bhp GPR50, could anyone link me to any?
Through 7 years we have raced eight Yamaha YSR 80's in a public project for youngsters, but this year a GPR 50 has been added to give the highest persons a chance too.
The GPR 50 is sold on street as a 45 km/h moped (due to an EU-regulation), but our has been mounted with the neccesary karburator and exhaust to get the same 8-9 bhp as the YSR's; but it seems like it havent got full power yet.
I need the powercurve to decide about reeving higher or serching for the missing power other place!