lifan 125 HP?

[stomp125]

Originally Posted by kingy2184

15 easy!!!! or maybe 7?

lol this really confuses the matter

[Fiddyparts]

should be anywhere from 5-7 bhp

when you think a stock xsport cr3 125cc pushes around 6bhp

[elliott king]

Originally Posted by johnr6

should be anywhere from 5-7 bhp

when you think a stock xsport cr3 125cc pushes around 6bhp

yeh but like he said when he had the 150 head on his stmp 140 it wheelied in fourth gear so i reckon htis willhave 8 hp and the ghost bulldogs have 8.5 hp

[Fiddyparts]

its not possible

a stock crf50 is 2ish bhp a lifan 140 is about 9bhp yx140 about 10

yx150 11bhp and 160 prob 12-14 now these are all est real figures at the back wheel not flywheel rates.

but then again my mate dave has a 2cc minimoto and put a yx160 head on it and when rossi had a go he wheelied in 7th gear proper good init

[elliott king]

Originally Posted by johnr6

its not possible

a stock crf50 is 2ish bhp a lifan 140 is about 9bhp yx140 about 10

yx150 11bhp and 160 prob 12-14 now these are all est real figures at the back wheel not flywheel rates.

but then again my mate dave has a 2cc minimoto and put a yx160 head on it and when rossi had a go he wheelied in 7th gear proper good init

very funny 1 yx 140 has got 12.5

[Fiddyparts]

yeah more likley at the flywheel

[elliott king]

Originally Posted by johnr6

yeah more likley at the flywheel

n o12.5 at the rear wheel and 14 at the fly wheel

[Fiddyparts]

mmmm each to there own then funny how pitsterpro use the yx 150 and thats 11 to the back wheel but hey what do i know anyway i am going for a ride

[mysterious_rider]

Originally Posted by johnr6

mmmm each to there own then funny how pitsterpro use the yx 150 and thats 11 to the back wheel but hey what do i know anyway i am going for a ride

johnny boy is correct. theres no way in hell its more than 7hp.
and i dont think a big valve head would make a massive difference because it doesnt let any more fuel in, thats the carbs job...


but like john said, 6-7, crf50 is about 2.5 or something around that. and yeh, yx's about 10-11 rear wheel for yx140s, they say 14 flywheel but i really cant see that. but then again i dont know, mine is tuned for top end speed with a 17t front and something like a 30t rear


the manufacturer will always try and big their bikes up.


besides, 7hp is perfect for a bike. if your happy with the engine dont go mental... just learn to ride better

[mysterious_rider]

john, any ideaw what my 6v cub70 is kicking out? apparently its been bored to 80cc (which im sure is bull) so what you reckon it is roughly?

4?5hp?