thanx for the response, i will check out those articles when i get home.
i am not new to nitro racing, but am new to this clutch system.
i am just in the process of running in a new sirio s.12 and the clutch wont engage at low enough revs for me to run the motor at low spped for the first couple of run-in tanks. i dont want to rev the motor high at this stage.
i have set the spring as per the manaul, but now need to back it off so it will engage sooner.
i was just after a tip so i can make this adjustment quickly to suit my track ect witout having to remove the clutch bell.