What does more teeth on front sprocket do?

Substituting a larger front or smaller rear sprocket lowers the ratio (sometimes called “taller” gearing), resulting in more speed for a given engine rpm. Likewise, a smaller front or larger rear sprocket gives less speed for a given rpm (“shorter” gearing).

Does a bigger front sprocket make you go faster?

Gearing up adds more speed and decreases the final drive ratio. You can gear down by using a larger rear sprocket or a smaller front sprocket. For more bottom end and faster acceleration, use a small countershaft/front sprocket or large rear sprocket.

When should I replace my front sprocket?

The time to replace sprockets isn’t after the teeth are severely curled or worn down to a nub. Or when the chain starts jumping the cogs. To maintain top, reliable performance of your bike and to minimize damage to other components, sprocket replacement should happen long before then.

Does a sprocket have teeth?

A sprocket, sprocket-wheel or chainwheel is a profiled wheel with teeth that mesh with a chain, track or other perforated or indented material. The name ‘sprocket’ applies generally to any wheel upon which radial projections engage a chain passing over it.

What kind of sprocket should I use for a countershaft?

Most sprockets are made from either steel or aluminum, or maybe even a mix of the two. Steel sprockets are generally less expensive, and better for longevity. Countershaft sprockets are often made of steel; they need to be durable and their small-size means weight is usually not an issue.

What kind of chainwheels do Renthal sprockets use?

All of Renthal’s chainwheels are CNC machined for precision, and to provide a combination of lightweight and strength. Renthal front chainwheels are made from nickel-chrome-molybdenum alloy steel, and are case hardened. When changing your sprockets due to wear, you will also need to replace your chain.

Can you change the sprocket on a street bike?

Changing gearing on street bikes can be more complicated than with a motocross bike or ATV. If you change the front sprocket, your street bike’s speedometer will very likely read incorrectly. You’ll need to correct that. Also, changing sprockets on a track-riding sportbike can change the effective wheelbase of the bike enough to affect handling.

What kind of sprocket should I use for racing?

For competition-quality sprockets, JT uses 7075 T6 aluminum. Its high strength-to-density ratio makes it ideal for racing applications. JT’s countershaft sprockets are made of full heat-treated chromoly SCM415 steel. Many other manufacturers simply “surface harden” their countershaft sprockets.