wankel powerd bad dog
- Thread starter petesmini
- Start date
- Tags wankel powerd
I vaguely recall those engines being sold at rock bottom prices here in Canada way back from places like Princess Auto.
Nothing wrong with them they just didn't catch on because all the OEM stuff was Briggs/Tech/Clinton powered and they were basicly locked out of the market.
They always seemed like a match made in heaven for a mini or kart, but keep in mind these were the days when you could buy a Westbend or Mac designed specific for racing.
Its nice to see one finding it way into a minibike in 2011.
Good luck with your build.
Nothing wrong with them they just didn't catch on because all the OEM stuff was Briggs/Tech/Clinton powered and they were basicly locked out of the market.
They always seemed like a match made in heaven for a mini or kart, but keep in mind these were the days when you could buy a Westbend or Mac designed specific for racing.
Its nice to see one finding it way into a minibike in 2011.
Good luck with your build.
Getting more motivated to finish, when i got motor it had no spark then i found new coil, even with spark it wouldnt run it ended up being somewhat stale gas, that same gas mix ran well in my lawnboy and leaf blower. I bought new higher octane gas and it ran great i think they are sesitive to octane. Im undesided wether to rotate engine so carb is in front and exhaust is in rear, by doing this i can make ram air type box for carb plus shorter cable and exhaust would be very simple, im gonna wait and see how the intake for carb turns out then go from there. As far as gas tank im thinking round or gokart style, but i definetly want to keep area above engine open , so if exhaust comes out front it will go under frame and dump out side infront of rear tire. Lots of hard work still left, I will post more asap.
I've never seen anything like that. 
Now that is a cool ass motor..
I'd think you would be best off to put a jackshaft in the bike, drive the jackshaft directly with some gear reduction from the motor, like 2:3 or something, then put the clutch on the jackshaft chained to the wheel...
Those engines turn some high rmps and it's gonna want to go 70 miles per hour, but it hasn't really got the torque for all that.. Plus they are one of those motors that makes more power the faster it goes... So gearing down your jackshaft would not only give you a lower over all gearing for some power.. But will ALSO allow the engine to build more rpms before the clutch starts hooking up.. :thumbsup: Gear Reduction with a stalled clutch might be quite the ride with that little thing..
Now that is a cool ass motor.. I'd think you would be best off to put a jackshaft in the bike, drive the jackshaft directly with some gear reduction from the motor, like 2:3 or something, then put the clutch on the jackshaft chained to the wheel...
Those engines turn some high rmps and it's gonna want to go 70 miles per hour, but it hasn't really got the torque for all that.. Plus they are one of those motors that makes more power the faster it goes... So gearing down your jackshaft would not only give you a lower over all gearing for some power.. But will ALSO allow the engine to build more rpms before the clutch starts hooking up.. :thumbsup: Gear Reduction with a stalled clutch might be quite the ride with that little thing..
rpm
For now im gonna try to line up chain with idle sprocket, Motor is very light in weight , if i didnt have it running i swear it was hollow. I was worried about idle speed for clutch, then i reminded my self it came off of a mower and for it to idle or possible rev up to 8 grand it would suck roots out of the ground.(stock carb) When i ran it it sounded great brap brap brap at idle no smoke great compression made more of a fan noies at higher idle with stock mower exhaust on. I made the mounting plate. this week im gonna make intake so i can flip carb, and measure to order a mandrel bent exhaust 304 stainless steel. Also im guessing no restriction on exhaust is better for this type of motor(lenght of pipe is about 2 half ft. 1.5diam) .
For now im gonna try to line up chain with idle sprocket, Motor is very light in weight , if i didnt have it running i swear it was hollow. I was worried about idle speed for clutch, then i reminded my self it came off of a mower and for it to idle or possible rev up to 8 grand it would suck roots out of the ground.(stock carb) When i ran it it sounded great brap brap brap at idle no smoke great compression made more of a fan noies at higher idle with stock mower exhaust on. I made the mounting plate. this week im gonna make intake so i can flip carb, and measure to order a mandrel bent exhaust 304 stainless steel. Also im guessing no restriction on exhaust is better for this type of motor(lenght of pipe is about 2 half ft. 1.5diam) .