'Yes' and 'No' AL...."Tune-Ability" is the keyword here!Listen to him; Weddle-Racing,
I’ll bet there isn’t but a smidgen difference between all the drum clutches on the starts. If the clutch is holding the engine at peak torque, (or not) the power it is absorbing is transferred, thru the chain, to the rear axle. Torque X RPM / 5252.1 = HP.
So the key is to get, what I call the stall RPM, up to the engines peak torque RPM.
Put a bathroom scale between the front of your kart and a strong wall. Write down what reading you get on the scale, and the RPM, at full throttle. Adjust the clutch a little and try again. Maybe higher first, then lower. The clutch setting where you get the highest scale reading is where you want the clutch stall set on the starts. You don’t have to hold it for a long time, you don’t want to burn up the clutch.
Comments, compliments, criticisms and questions always welcome.