Scooterotica

classic rapido 225, 24mm mikuni and a ancillotti at the moment produces 16bhp and 14lbft torque at 5800 to 6800rpm, what benefit can i expect if i change the crank to a 62mm Mb crank.

A lighter wallet?

Matty wrote:A lighter wallet?

TIGHT ASS

A spare crank?

hopeless answers i am off back to a real forum (LCGB)

more torque,better for passenger and luggage or possible capable of a little higher gearing leading to better fuel consumption and higher top speed,
regards
joe

Then 24mm carb sounds a bit small for 225cc, and the 62mm will put the capacity close to 250, so I suspect the comments about lighter wallets might include a new carb (28-30mm??). If you are currently running a 58mm stroke, you may need to look at some porting work as the change in stroke is quite dramatic and will leave your porting in no-man's land.

However, longer strokes usually mean more torque, less revs and bigger bangs (from the increased capacity).

Martin

Thanks joespeed and knowledge all i need now is the right answer from cezeta that he will buy me the crank for Christmas
The engine has been together since 1996 only the top end has been changed so i think it's time i had it apart, well replay or Mb will.