What size sprocket do I need?
So, the bottom line is, what are you trying to achieve? For more bottom end and faster acceleration, use a small countershaft/front sprocket or large rear sprocket. For every 1 tooth that you change on the front sprocket is like changing 3 to 4 teeth on the rear (and that’s true for higher gearing ratios, too).
How big of a sprocket do you need for a dirt bike?
When you’re looking to upgrade keep in mind the following depending on what you are trying to accomplish with your bike: Use a small front sprocket (countershaft) or larger rear sprocket. For every 1 tooth you change on the front, it is the equivalent to changing 3-4 teeth on the rear.
What is the ratio between front and rear sprockets?
We explain it all here. Your gearing ratio is, simply put, the ratio of teeth between the front and rear sprockets. This ratio determines how engine RPM is translated into wheel speed by the bike. Changing sprocket sizes, front or rear, will change this ratio, and therefore change the way your bike puts power to the ground.
What happens when you change the sprocket size on a motorcycle?
This ratio determines how engine RPM is translated into wheel speed by the bike. Changing sprocket sizes, front or rear, will change this ratio, and therefore change the way your bike puts power to the ground.
What kind of sprocket do I use to change my teeth?
Use a small front sprocket (countershaft) or larger rear sprocket. For every 1 tooth you change on the front, it is the equivalent to changing 3-4 teeth on the rear. Creates a lower gearing ratio. This is ideal for tight trail riding or tracks without many long straight sections.
When you’re looking to upgrade keep in mind the following depending on what you are trying to accomplish with your bike: Use a small front sprocket (countershaft) or larger rear sprocket. For every 1 tooth you change on the front, it is the equivalent to changing 3-4 teeth on the rear.
How many rotations does a rear sprocket need?
To turn the rear sprocket once, the counter shaft sprocket has to spin the number of times in the “Ratio” column. (see gear ratio image) As an example, a 30 tooth rear sprocket and a 10 tooth front sprocket equals a 3.00 gearing ratio or three rotations on the front for every one rotation on the rear.
How to calculate your sprocket’s final drive ratio?
To determine the final drive ratio, divide the rear sprocket size, say 49 teeth, by the front or countershaft sprocket size, say 13 teeth (like a new Yamaha YZ250F ). In this case, the Final Drive Ratio is 3.77 – the front sprocket revolves 3.77 times to make one complete revolution of the rear sprocket.
What’s the gearing ratio of a 30 tooth sprocket?
As an example, a 30 tooth rear sprocket and a 10 tooth front sprocket equals a 3.00 gearing ratio or three rotations on the front for every one rotation on the rear.