Bike sprockets and chain.

Question

A gear ratio is the ratio of the teeth on the front sprocket and the teeth on the rear sprocket. If a bike has 36 teeth on the front sprocket and 12 teeth on the rear sprocket, what is the gear ratio for the bike?

1

Answer 1

The gear ratio is calculated by dividing the number of teeth on the front sprocket by the number of teeth on the rear sprocket.

For a bike with 36 teeth on the front sprocket and 12 teeth on the rear sprocket, the gear ratio would be:

\[ \text{Gear Ratio} = \frac{\text{Teeth on Front Sprocket}}{\text{Teeth on Rear Sprocket}} = \frac{36}{12} = 3 \]

So, the gear ratio for the bike is 3:1.