JerboaJohn
Well-Known Member
mbrebel! I know I was thinking on the side where'd I see a selection of sprockets and big ones,, good find Dan!
Where did you find a #35 76t that fits the freewheel on the crank? This is the biggest one I found and am about to buy.Back when I was trying to increase my engine-to-crank reduction, I figured on 9->76T on j/s out.
Since (Teeth * Pitch) ÷ Pi = sprocket diameter, that meant a 76T #4x(x) was over 12" in diameter.
I had to step down to #35 for my jackshaft output. A 76T #35 is about 9". Output is 9T either way.
There was no way I could fit a 12" sprocket on my pedal crank without hitting the whole motor
With my above mentioned setup, 1st gear is 26.755:1 which is funnily enough good for 26 mph.
3rd gear is 14.378:1 which will yank 48, want to hit it on flats tucked, something tells me 46 mph is my flat ground wall...till I make a fairing.
This lifan build has potential to be much much faster. Just needs a cvt .
Gotta remember, I'm not running the 49 cc. The 53 cc has 25% more torque. I hit my wall at 46 mph, sorry for your lack of belief but w/e. Show up at the next race for proof, if you need it. Also, already replaced my cam, I know it wears fast.Yeah, 9000 is fun to claim on these, but these engines don't have an oiling system worth a crap.Doubt you can do over 40 on a flat unless you have a tailwind. Even when mine was tip-top, my brother's cammed GXH50+Q-matic walked away from it over 30MPH and his never could do over 41, 42 on a windless flat. The shift kit robs top speed capability and increasing the engine-to-crank reduction also increases drivetrain load and therefore power loss. Also, under heavy load, these engines wear out their camshaft quick and suffer power loss over time.
Oooh he's calling you it bro! Lol JK . 46mph is booking for a 53cc 4 stroke!Gotta remember, I'm not running the 49 cc. The 53 cc has 25% more torque. I hit my wall at 46 mph, sorry for your lack of belief but w/e. Show up at the next race for proof, if you need it. Also, already replaced my cam, I know it wears fast.