Did you know that not all shifters have the same top gear ratio to the output shaft? Of all the shifters I have in my gear ratio chart for shifters, only the Honda is 1-1 on the final ratio. This means that if yours is not 1-1, and someone gives you a gear set, it might not be the same ratio, overall, that you would need. Post your output ratio and if someone gives you a ratio, I’ll check it in my spreadsheet and tell you what gear set you will need to end up with the same overall ratio.I just put a yz250 on kart. Running factory tranny and run 1/8 to 1/10 mike tracks. I have a 14 27 gear on it now. I'd like to keep it around 9000 and figured you guys could give me some advice.
Sounds like 9000 OS a good number for me. It makes max HP 8800 max torque 7600. Unless I change Alot on engine it sounds like 9000 is max
Seems to me that the gear ratio from the crank to the axle is the important thing. Whether you use 3rd or 4th, the overall ratio is what you want to know.Is there a certain gear you should shoot for. Should I try to gear it to run in 3rd or 4th or does it matter.