Mountain Bike Chain Length Calculator

Well it s really quite simple the first step is to wrap the chain around the largest sprockets on the front and rear so that the ends meet on the largest front chainring. Chains cannot be cut to 52 1 4 53 1 8 or even 52 1 2. When you purchase a new chain it usually comes with extra length so that it is compatible with most drivetrains.

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Here s the easy way to set the chain length.

Mountain bike chain length calculator. This video will take you step by step through sizing a bike chain including determining whether your old chain was correctly sized. The correct chain length chain rivet. For example some derailleur bike chain could only be 51 52 53 inches etc. Methods to determine chain length method 1.

To check if it was the correct size shift the bike to the smallest sprockets and check the chain for any slack. You can use either of these two methods. Built another bike this year and finally got to grips with gears and chain length. Keep the bike on the ground to prevent the rear wheel from spinning.

I have no idea how the magic number of 0 0796 was derived but the formula appears to provide a pretty good approximation to the shortest possible length of 1 2 inch pitch bicycle chain that will theoretically go around the two cogs on a fixed wheel bike. Size to old chain count links if your old chain was sized correctly it can be used to determine the length of your new chain. Replacement chains for bicycles are always longer than you need. Wrap the new chain around your largest chainring on your crank for 1x setups it s your only chainring.

Csl chainstay length in inches f front gear cog teeth r front gear cog teeth. Measure the links and join it there. 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. Start wrapping the end of the new chain at the 9 o clock position on the largest cog of the cassette.

It really isn t too difficult to get the chain length right. Take your old chain and lay it out next to the new one. All you need are a chain rivet or a chain lock and you will need to know the amount of chain links needed for a correct chain length. 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.

Simplest way i ve heard and used is put the chain on the big ring at the front and the small ring at the rear and pull the chain until the arm of the rear mech is vertical. How do you know how much length your bike will need. It is possible to determine chain length from industrial drive train equations and then cut the chain before installing it on the bike.