How can I make my thumb throttle lighter on my '05 Honda TRX 450R?

Question

My thumb gets very tired while racing and after 3 or 4 laps around the MX track, I can barely move my thumb. I've tried a thumb throttle extender, and excersizing my thumb with a hand gripper thing, all without much success. Is there something I can do to my throttle, cable, carb, etc. to make that throttle push easier? I'm not crazy about going to a twist throttle either. Thanks.

Answer 1

Take a look at the return spring on the throttle.. There may be a way to lighten the tension. Too little tension will cause problems with controlling the throttle..