Originally Posted by Scol
I have gone back to a 2 stroke engine as my 4 stroke was not up to the task of pulling me up hill around my area even on the flat I have to cycle to help it along.
I have a 34 tooth sprocket I was thinking of fitting has anyone else done this ?
You have altering terrain and trying to pick a set gear ratio.
That is like having a manual 5-speed car and putting it one gear for all driving.
It only does one specif thing well, and a 35 would only be good for going fast downhill.
If you want to go fast AND climb hills well you just need adjustable gears.
This is easy on bicycle that that already has hub gears, you just 'Jackshaft' you engines output to the right hand pedal system.
That ~50cc 4-stroke you wrote off for not having enough power?
They work great if you can shift the gear ratio on the fly like most bicycles can with human power.
With a 5-speed internal shifting hub these ~50cc shifters I am building will jump out in traffic and hit 25mph is like 6 seconds, hit 40+mph on the flats, and still climb a 6% grade @20mph steady with NO pedal help.
A 66cc 2-stroke like you just got, even better.
More power but the same gearing, the numbers just go up.
I just implore
anyone looking to improve their performance with gears think about BRAKES first!
The eyepoping thrill you get with the power can and will wipe that smile away if you can't stop as fast as you can go guys, really.