milkcratemotorer
New Member
- Local time
- 1:30 AM
- Joined
- Feb 3, 2010
- Messages
- 9
hello everybody! built prototype number one and trying to address some of the shortcomings with a new build. the motors im using are tonka chainsaw motors, 33cc i think, i got four of them, so trying to make them work for not too much money. the setup now is direct drive with a bmx peg, no clutch. want to be able to turn the motor off and pedal relativly normally at a moments notice, (as to not draw attention to myself if certain public servents drive by). anyways, had two ideas to maybe make this work, but dont know if there even possible. the first is to use the clutch the saw already has (its one where the chain drive is on the inside) by taking the drum to the local machien shop, having them grind, or remove the chainsaw sproket, and attach one that i bought. this would require keeping some of the metal from the original sproket and boring the new sproket to match, since there is a beiring in there the clutch drum rides on. the other idea i had was to by a short shaft that is the same diameter of a gocart clutch, and have the machine shop bore a hole in the shaft with reverse threads (to match the shaft of the chainsaw)esentially making an adapter. the chain would drive a roller, not like the current stanton drives
heres a picture of my first build, only got about 15 miles on it, worked pretty good, except for no clutch, got up to almost 30 mph with just a little peddling, but would pretty much hold that speed. the nut holding the peg came loose, since its a standard thread reverse nut instead of the metric one that i think i need, altho i could be wrong about that too, do chainsaws have some kind of special thread pitch?
heres a picture of my first build, only got about 15 miles on it, worked pretty good, except for no clutch, got up to almost 30 mph with just a little peddling, but would pretty much hold that speed. the nut holding the peg came loose, since its a standard thread reverse nut instead of the metric one that i think i need, altho i could be wrong about that too, do chainsaws have some kind of special thread pitch?