Manco Thunderbird

[fuzzydnkn]

Hello, I have a manco thunderbird mini bike, it has a Tecumseh 3.5HP motor. and it has a governor on it, and its missing the entire throttle assembly...which is kinda hard to find, and i was wondering if anyone knows if theres a way of removing the governor (and yes, i know that that increases the risk of the motor blowing, but i know not to rev the hell out of these type of motors lol), or possibly (if jetted correctly) using a carb from a crf50 or 70 type of bike would work...
Any suggestions are greatly appreciated
Thanks

 

[Patman]

Yes it should be possible to remove the governor on a Techmseh engine and/or replace it with a carb from another engine it only takes some head scratchin and a little bit of fabrication. A carb isn't designed specifically for an aplicatoin but it picked from a parts book just like the specific bolts to hold an engine together are, basically it's just a part so do a little measurin, test fittin' & eye ballin' and I bet you will find something that will fit.

 

[fuzzydnkn]

Yeah, i was looking at my crf50 carb where it bolts on, and it looks about the same size, i took the carb off the 3.5 and it is the most simple carb design ever lol. i dont think the governor could be replaced or removed, i think im going to try to find a carb that will fit....and just hopefully it will work with some tinkering around lol...

 

[Patman]

So the design of the carb is such that the governor is an intergral piece? Boy how times change, we took it off the Briggs engine of a buddies tiller.

It's always cooler to make something YOU came up with work in a situation like this than to buy a canned solution anyway.

 

[fuzzydnkn]

Yeah its almost like a butterfly choke design...just for a throttle...lol
and yes i agree with mini bikes, its always more fun to customize them your own way