200cc Gear ratio speed

kksbunny

New Member
Nov 27, 2012
33
0
0
u.s virginia
i just made my home made motorized bicycle, it has predator 212 cc with governor.
my clutch has 13 tooth
input jack shaft 22
output jack shaft 10
sprocket 56


how do i calculate my max speed at 3600rpm?

Thank YOu.

cvlt1
 

MotorBicycleRacing

Well-Known Member
Jul 28, 2010
5,845
106
63
SoCal Baby!!!
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Why are you leaving the governor on?

gear ratio calculator from motoredbikes.com

The program can be downloaded from http://jimsitton.net/ratiocalc/

Just right click on the file gearratio.exe and select "save link as" and put it somewhere you can find it again.

Once it's saved, double click on the gearratio.exe file and it will run.

The program allows for up to three ratios in series. If you have fewer just leave the unused ratios set to 1:1.

The program will also calculate speed based on engine RPM, drive ratio,and wheel diameter. Be sure to measure the outside diameter of your wheel for accurate results.
 

scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,508
6
38
Ridin' inSane Diego, CA.
Using the gear ratio calculator, here's what you have:



You really do need to remove the governor and gear lower to take advantage of the set-up you are using.......better power and plenty of it!

dnut