"A" Cam Pulley vs. "B" Cam Pulley

[smotorboy]

Hello All,

A question for the Morini Motor Mavins in the UK….

I have an "A" pulley installed and the belt tension is a little too loose for my liking.

Question: If install a "B" Pulley (which I have) will it tighten up the tension or loosen it more???

Thank You in advance for your expertise,

Robert "Smitty" Smith
Red Baron LSR
California

[norbert]

it will tighten up.
A is the smallest pulley, C the largest and B is suposed to be the norm.

[EVguru]

0.15mm difference in pitch diameter.