The three shoe-springs are really the only clutch parts that enjoy the freedom of rider preference. But their role in ratio adjustment is short lived – once the machine has started to move it’s all up to the rollers and torque-driver spring. Installing a very tight, stiffly sprung set of springs will provide a higher "stall" speed, effectively raising the rpm during launch. Alternately, a softer set of springs will provide a little easier, smoother engagement. After the shoes have engaged, there’s little if any effect of the shoe-springs.

By: George Szappanos

Source: ATV at Off-Road.com