[Fisher]

Quote: Originally Posted by GTT 270 (original)

... so based on a 62mm SCharger pulley the crank pulley is 127.72mm (using a ratio of 2.06)

If i run a 15% scharger pulley then it would be 52.7mm and the crank would remain at 127.72mm resulting in a 2.42 ratio.

But i run a 1% oversized crank pulley so this would result in a crank pulley of 128.99mm which means my ratio is 2.45 based on a 15% pulley (values rounded up)

Or is that all wrong?

Cheers,
Albert.

I have seen somewhere the supercharger pulley is 65.5mm.