Like tittle says I've never seen the inside of a thumb throttle but would it be similar to the twist ones. Just got to connect the cable inside? I found this one http://www.crossfiremotorcycles.com/...lley-drum.html
Do you think it would work on our China doll engines?
I really like that one cause its all in one. Dual brake, throttle and brake light switch ( I plan on having a full light set up or at least working brakes lights)