floating ideas, come on in.....

[popeye]

see this is why i started this thread to get the 4 stroke disscussion going because im currently saving for my kit and am unsure what to get, i do have another question if anyone is able to answer id be gratefull, do you have to have a gear box? as in can you not run a sprocket off the clutchstrait to the back hub? maybe with a properly large back cog?

 

[MotorBicycleRacing]

do you have to have a gear box? as in can you not run a sprocket off the clutchstrait to the back hub? maybe with a properly large back cog?

Mini Bikes do this but they have very small diameter wheels and the rear sprocket is still very large.

A Honda GXH 50 on a 26.5" wheel bike running a 9 tooth on the clutch
would need a 150 tooth sprocket on the rear wheel to give a top
speed of 36.9 mph at 7800 rpm.

 

[popeye]

thanx for the reply mbr unfortunately im a little hard of thinking and i dont speak maths verry well at all but i run a 24in rim so thats even worse then? will a mini moto g.box/cvt work in our application i asked you once about the yxm engine kit on ebay and you said the box on it was junk, could it be replaced with the mini moto cvt/g.box as its a 2 stroke piece of kit or is that unimportant?