Hover over the cells to highlight and see the gearing information.
Bicycle chain length calculator.
Length of the chain stay.
L 2 c f 4 r 4 1 l length your chain length in inches rounded to the nearest inch.
This free javascript bicycle chain length calculator uses the rigorous equation as published on the park tools site and various discussion forums.
The following links provide some more helpful information.
In future tutorials i plan to discuss the different types of chain connectors and how to use a chain tool to break the chain.
Chain length too long.
Teeth on largest sprocket.
A bike has a 42 32 22 front chainring set up.
Bicycle mechanics repairs.
Now add one whole inner and outer link so that you have approximately one extra inch of slack in the chain.
Bicycle mechanics repairs.
Bicycle mechanics repairs.
A free bicycle chain length calculator written in javascript by nigel jones.
That will be the optimal length for most systems.
Use chart above to find decimal measurement.
A new bicycle chain usually comes with 116 links.
Replacement chains for bicycles are always longer than you need.
Links equals cm note.
Round the final result to closest whole inch figure.
R number of teeth on largest rear cog.
So for optimal length a new chain is usually shortened from the 116 links that come in the box.
L chain length in inches.
Bicycle drive chain length.
It is possible to determine chain length from a simple equation before you even take your new chain out of the box.
When using newer gear wheels with 11 teeth the chain length needs to be extended by 2 links 2 55 cm.
F number of teeth on largest front chainring.
Teeth on largest chain ring.
The result applies to gear wheels with 10 teeth.
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.
52 36 to 53 39 huge difference chain length.
C chain stay length in inches measure to closest 1 8.
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.
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.
Here is a complete bicycle gear ratio chart of the most commonly used bicycle chainring and cog sizes.
This video will take you step by step through sizing a bike chain including determining whe.
This is long enough for the biggest chainrings and for most distances of rear wheel from front chainrings.
