We can all appreciate a slick shifting drivetrain, and we all hate it when our drivetrain turns on us. One of the easiest ways to prevent this from happening is to ensure your chain is sized correctly. When too long, it can cause premature derailleur wear, shift poorly and bounce around with the potential of derailing. When too short, it can jam the drivetrain or cause the derailleur to actually snap. But you don’t have to worry about this unless you have to put on a new chain, right?
Not necessarily. Quite often, this issue starts at the LBS: many chains are not properly sized from the factory and some shops don’t necessarily check this on every bike. If you should try to “match the length” of the current chain when putting on a new one, this can often result in a chain that is too long or too short, depending on the condition (and length) of the previous one. But how do you become a pro at sizing your chain to the correct length? It’s as simple as doing the one thing you never should: crosschaining.
You can read more about it after the jump: