What is the difference between a type 1 and a type 3 750cc crank ?
The type 1 is the most common crank contained in 90% of Laverda 750cc bikes sold and has a small but relevant design fault. The end, which carries the ignition pick up, is only 10mm in diameter. Under certain conditions this can snap NO DAMAGE TO THE MOTOR NORMALLY OCCURS it is just annoying as the motor will need a complete strip and rebuild. Below is a picture of the two crank ends side by side. The right hand crank is the thin ended type 1, with the end clearly broken off. The type 3 crank end on the right is clearly thicker at the shear point.
