How does torque change when you change wheel sprockets?
The increase or decrease of torque when you change out the wheel sprockets in a bicycle or in a chain-driven motorcycle engine can be calculated with a bit of a basic math. Both types of vehicles use the same design: a front sprocket that translates the energy to a chain, and a rear sprocket that converts that energy to different gears.
What does a rear sprocket do on a bike?
Both types of vehicles use the same design: a front sprocket that translates the energy to a chain, and a rear sprocket that converts that energy to different gears. You can quickly determine on paper whether a desired sprocket change will improve the torque and the bike’s performance or make it worse.
What happens when you change the sprocket teeth?
A positive change is an improvement, while a negative change results in a loss of torque. Make sure to count the sprocket teeth correctly or your calculations will come out incorrect. Anything less than a three percent change between drive ratios generally will not be noticed by the driver when operating the engine.
What causes an increase in torque in an engine?
Torque improvement is a result of changes in drive ratio. The change is the impact to engine torque as power. A positive change is an improvement, while a negative change results in a loss of torque.
How much torque does a rear sprocket have?
That is the axle nut torque. He is talking about the bolts holding the rear sprocket to the sprocket carrier. I think it is something like 40NM–don’t quote me on it but it ain’t 100.
Where is the drive sprocket on a bike?
Pick up the drive sprocket — the forward chain sprocket on a motorcycle and the big one attached to the pedals on a bicycle. Count the teeth on the forward sprocket. Do the same for the rear sprocket the chain pulls on the rear wheel of a bicycle or connected to the motorcycle gear axle.
How much torque does a Street Glide sprocket have?
The pictures below will help you understand why I don’t give torque specifications when asked. The first service manual picture is of the final torque of the compensating sprocket bolt on a 2012 Street Glide with a 103. 140 ft-lbs.
Is the torque settings in the BMW service manual correct?
Nope that is correct info right out of the BMW SERVICE MANUAL! It is for the nuts that hold the sprocket to the carrier. If I post, you can bet your ass it is correct info based on current information.