When a clincher tire is properly installed, its bead (the thin line molded into the rubber just above the rim) should not bob when the wheel spins. The surface under the foil goesĪgainst the tube (after glue has been applied) and then the plastic is peeled off. The patches in most tire repair kits have foil on one side and plastic on the other. It quickly delivers a large volume of air, which can blow a bike tire off the rim. You’ll know that a quick-release is tight enough in the frame if pushing the lever leaves an imprint on your palm.īeware of using a gas station’s air pump. Flats occur more frequently, and it’s difficult to apply patches when it’s wet.
Also, always carry a spare tube in the rain. In muddy or sandy conditions, hose down the bike after every ride.Ĭarry a patch kit and a spare tube, so you’re not hopelessly stranded if you have two flats on a ride. Dirt acts as a grinding compound when it gets between moving parts. The most important rule of mountain bike maintenance is frequent cleaning. Then dry it with a towel, and spray lubrication into derailleur and brake pivot points and where cables enter or exit their housings. Hose your bike after riding in the rain to remove most of the grit. This will allow the lube’s liquid carrier to evaporate and keep your drivetrain cleaner. If possible, lube your chain 24 hours before riding. Another reason not to use these gear combinations: It could cause additional wear on your drivetrain. Otherwise, you risk damage to the chain, chainring, and chainstay.Įxtreme chain angles, such as combining the largest rear cog with the large chainring (or smallest cog with the small chainring), may never run quietly or smoothly, which is one reason they shouldn’t be used. Either get off and turn the crank backward to free the chain, or learn When you hear the disconcerting scrunch of “chain sucking” and it feels as if a stick has been jammed through your chainrings, stop pedaling immediately. On a worn one, it will fall an eighth of an inch or more short of a rivet.Ī simple fix for a skipping drivetrain: Turn the barrel adjuster on the rear derailleur cable 1/2 to a full turn. On a new chain it will also be on the center of a rivet. Put the first mark on the center of any rivet, then look at the 12-inch mark. To tell if a chain has become worn and stretched enough to require replacement, measure it with a foot-long ruler. The two surest (and simplest) ways to help your bike work well are to maintain proper tire pressure (it’s marked on the tire) and frequently lubricate your chain (at least every other ride).
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