How to Clean and Lube your Bike Chain
I’ve noticed that many triathletes are actually scared to touch the chains. Whether it’s the fear of breaking something or the aversion to getting dirty, you’ll need to get over it…quick. The chain needs love just like the rest of the bike. A clean and properly lubricated chain can save you five to 10 watts of power.
There are some do’s and don’ts when it comes to chain care.
Do clean and dry the chain BEFORE adding lubrication. Lubricating a dirty chain will create floating debris, which can get into the chain and cause more damage.
Don’t lubricate a wet chain. Lubricants will only adhere to a dry chain.
Do Apply the right amount of lubrication. If the chain is under lubricated, you may hear a chirping sound or an occasional squeak. If you apply too much lubricant, you will be able to see the excess. This is problematic because it can spread down the bike as you ride and settle on the brakes.
Don’t lubricate other components. The chain is the only part of the drivetrain that needs lubrication. The cassette and chainrings do not need any lubrication. It’s ok to lubricate the derailleur pivot points and the pulley/jockey wheel’s screws, but the chain is the only thing that truly needs to be lubricated.
Cleaning your chain while on the bike
Cleaning your chain on your bicycle is easy, I believe the best and simplest method is to apply a degreaser, or soapy water to a rag and give the chain a good scrubbing. If your chain is excessively dirty then you may have to do this a couple times.
Don’t expect your chain to become spotless, it’s best that you get it clean enough to where you can see the chain’s color. Allow the chain to dry completely before applying any lube.
Cleaning your chain off the bike
If you remove the chain, soak it in some degreaser, soapy water, or mineral spirits for 20 to 30 minutes, then scrub or wipe down.If you like to take it further, hang it to dry or take an old shoelace and run it through the chain to really get the gunk out.
When to replace your chain
Over time, chains naturally stretch out from the force of riding. Once a chain reaches a certain length of elongation, it’s time to replace it.
Using a ruler, a new chain should measure exactly 12 inches across 12 links. For bikes with 10 or more gears on the cassette, this threshold is 0.5% of additional stretch. (Ex. If it measures more than 12 and 1/16 inches its at the threshold)
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Cory Burtell is a tenured bicycle mechanic with over 10 years of experience. Most recently he was a lead mechanic at Ridgewood Cycle Shop, in Ridgewood New Jersey. Also an avid mountain biker, Cory is very familiar with the anatomy and care of bikes as a rider and a professional.