ZnsaneRyder
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I was hoping you were going 50 for real..............hehehe
Maybe one day, someone here will hit 55mph.
Maybe one day, someone here will hit 55mph.
I'm going 50 MPH!!!!
- Thread starter emdude
- Start date
M
macarollo
Guest
I think someone has... 56mph I think... maybe it was 54.
It was a small engine too... maybe 50cc high performance engine.
I definately don't think anyone has hit 60mph.
ZnsaneRyder
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Kawasaki999 has hit 57mph with his, 43cc sooped-up go-ped engine.
I've been to 52, so I'm planning on 55mph goal for my next build, but I'll sure try to hit 60 with enough RPM hehehe! I hope the old farts get scared already.
M
macarollo
Guest
How do you plan to hit 55mph?
Do you think the 196cc HF engine is limited to around 50mph by lack of HP OR is it all gearing? If you geared it really high would it have enough power to push a bike to 60mph?
When I got to 50mph the bike just wouldn't go any faster... I think it was around 5200rpm, but I think the engine can rev faster. Maybe with a performance muffler that flows better it could reach higher RPM's.
I think if you gear that engine much higher than 3:1 you start to lose usable power.... unless you were to use a CVT... maybe that is the ticket to high speeds.... use a smaller sprocket and also use a CVT.
ZnsaneRyder
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I'm going to use a 13-inch tire with a 3.2:1 ratio. (10T/32T) Calculates 55mph @ 4550 RPM.
I'm sure they are HP limited some, but most stock engines can't rev much past 5200 because of valve-float. The stock valve springs are weak, but you can upgrade to 18lb valve springs to get 6000RPM from them. The go-kart guys are getting 9-13HP and over 8000 RPM out of them with some mods........just imagine 10+HP on a bicycle!
I'm sure they are HP limited some, but most stock engines can't rev much past 5200 because of valve-float. The stock valve springs are weak, but you can upgrade to 18lb valve springs to get 6000RPM from them. The go-kart guys are getting 9-13HP and over 8000 RPM out of them with some mods........just imagine 10+HP on a bicycle!
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