Bicycle Chain Length Calculator

You can use cm or inches to input your chainstay length you should always be able to find this out on your bike manufacturer s website inventory or in the manual it came with and then add your outer chainring size and number of teeth.

Bicycle chain length calculator.

This free javascript bicycle chain length calculator uses the rigorous equation as published on the park tools site and various discussion forums. This is long enough for the biggest chainrings and for most distances of rear wheel from front chainrings. Replacement chains for bicycles are always longer than you need. The following links provide some more helpful information.

Links equals cm note. Bicycle drive chain length. A new bicycle chain usually comes with 116 links. Bicycle mechanics repairs.

Remember you can only join the inner plates to the outer plates of a chain so you can only calculate to whole inch increments. Teeth on largest sprocket. Round the final result to closest whole inch figure. L 2 c f 4 r 4 1 l length your chain length in inches rounded to the nearest inch.

This video will take you step by step through sizing a bike chain including determining whe. Hover over the cells to highlight and see the gearing information. A free bicycle chain length calculator written in javascript by nigel jones. Length of the chain stay.

R number of teeth on largest rear cog. F number of teeth on largest front chainring. Bicycle mechanics repairs. When using newer gear wheels with 11 teeth the chain length needs to be extended by 2 links 2 55 cm.

Teeth on largest chain ring. In future tutorials i plan to discuss the different types of chain connectors and how to use a chain tool to break the chain. Here is a complete bicycle gear ratio chart of the most commonly used bicycle chainring and cog sizes. L chain length in inches.

So for optimal length a new chain is usually shortened from the 116 links that come in the box. Bike chain length calculator. 52 36 to 53 39 huge difference chain length. A bike has a 42 32 22 front chainring set up.

Javascript bicycle chain length calculator. It is possible to determine chain length from a simple equation before you even take your new chain out of the box. The result applies to gear wheels with 10 teeth. C chain stay length in inches measure to closest 1 8.

That will be the optimal length for most systems. Now add one whole inner and outer link so that you have approximately one extra inch of slack in the chain. Chain length calculator does nothing more and nothing less than working out what the length of your chain should be expressed in number of links. Use chart above to find decimal measurement.

Bicycle mechanics repairs.