49cc 4 stroke bicycle engine kit,

this is me on my bike engine kit, it runs great! i got it from http://www.80ccmotorboys.com/

it was 230 bucks, so far i have done over 100kms and its running better and better! only time will tell how long it will last though, for some reason it looks slower in the video than in real life? crappy camera i suppose

Category:

Autos & Vehicles

Tags:

• 49cc
• stroke

[frankk323]

legal on road ?

[586guest2]

@frankk323 not really. but ive never had a ticket in 5 years of riding

[TheDiverdude3742]

did this come as a full kit?



[586guest2]

@TheDiverdude3742 yup

[jmiguel999]

i have the exact same engine myself. have had it for over a year and have only had to change the clutch once and clean the carb twice. Ive had it with a speedometer since day 1 and ive put more than 1400 miles into the engine. works great, top speed downhill is 45 mph and top speed on a flat road is 25 mph. 130 mpg (calculated that with speedometer too). Awesome toy.

[586guest2]

@jmiguel999 yeah these 4 strokes wind out wickedly high, almost no valve floating

[YoTeezy]

I lov it.. I'm getting me one now

[loveshark1m]

i got a 48cc4stroke kit. mine slips too.. i replaced the clutch with a heavier-shoe- 2cycle-clutch by mistake. it was designed for a higher r.p.m. idle 2cycle49cc.. i lowered its clutch's r.p.m. by removed the transmission and holding a butane torch on the clutch springs with engine on and idling (the clutch assemble was spinning),, over the spring area till the springs were glowing. it slips about half as much. it's been 30 miles. it's a 21speed 26" rim mountain bike. i use synthetic oil

[586guest2]

@Auzzie200 this bike has a 44t sprocket.

[Auzzie200]

can i ask what size sprocket you were using during the vid to achive 40-55kph?. im running a 50 tooth on mine and getting about 35kph MAX, id averege around about 25kph though