to cut the log QUICKLY, the question then becomes how many chips can you cut in a given time period.
This is determined by sharpness of chain, hardness of log, and HORSEPOWER.
This is exactly how I see it. The force needed to pull the chain through the wood is determined by the sharpness of the chain and hardness of the wood. Once you start cutting and your saw moves the chain over a certain distance, then your saw produces labour. Now, how fast that labour is produced, is determined by Horsepower (indicator = rooster tail) .
Torque is a matter of saw kinematics, and can be adapted for ex by the sprocket dimensions. HP can only be adapted by modding.
simple, ain't it :hmm3grin2orange: :hmm3grin2orange: