5 On-the-Road Bike Repairs You Need to Know

I love taking a new bicycle fresh from its cardboard wrapper, greasing the seat tube, installing the post, popping the bike into the stand for assembly. From that point, a zip-tied, foam-wrapped collection of parts becomes a bicycle for the first time. But good mechanics don't just assemble a bike. They tune it—checking brakes, wheels, shifting and adjusting the touch points to ensure that the rider's first impressions aren't marred by an issue with the equipment.

During the first few rides on even the best-tuned bike, however, as it settles in, cables stretch, components fall out of adjustment, and bolts loosen. (Take our quiz to test your Fix-It IQ to see how much you know about keeping your bike in top running shape.)

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These routine problems are remedied at the 30-day tune-up almost all shops include with the purchase of a new model. At Editors' Choice, I'm the bike shop—I have to be ready to keep a fleet of new bicycles rolling under a pack of editors. In addition to the predictable adjustments, I know by now to expect impromptu breakdowns from crashes, short stops, mis-shifts from riders bopping between all the different types of systems (mechanical and electronic), plus the early-season conditions of the road, which often includes razor-sharp gravel, sand and broken glass yet to be swept away by the first rains of spring.

Of course, I also must account for the tomfoolery that arises when you let a bunch of editors loose with bikes, like power slides and skidding contests. This year, we experienced an unprecedented number of breakdowns: zero. We did suffer one flat, but it was a slow leak that we found after pulling the bike from storage overnight. Good preparation played a role in this, but we were also lucky. Even if we'd suffered some mishaps, though, we were ready. Here's how we handle five of the most common hiccups.

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Loose Crankarm

Crankarms are notorious for loosening after the first few rides. Modern versions that use a pinch bolt to secure the arms to the spindle are much more secure, but should still be checked within your first five rides, and periodically after that. More problematic are cranks with a tapered interface, such as the older square tapers, Octolink from Shimano, GXP from SRAM and all BB30 cranks from SRAM and FSA.

Fixing a loose crank on the road is simple: Just tighten the bolt with the appropriate hex wrench (or, for older cranks, a socket). Most crank bolts are either 8-or 10mm, and most multitools are equipped with this size. If yours isn't, use this trick, which sounds crazy, but works: Put two smaller wrenches into the bolt that equal its size, then tighten. During a group test a few years ago, I was able to turn a 10mm bolt using an 8-and 2mm hex together. It's not ideal, and you may have to stop periodically to retighten, but it beats pedaling home with one leg because the crank falls off.  

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Wobbly Wheel

Spokes stretch a little when new, and nipples bed into the rim, which can cause a wheel to go out of true. To fix it, leave the wheel in the bike and run your hand over the spokes midway between the hub and rim. Feel for spokes that are looser than the others, and when you find them, tighten them just until they start to take up tension.

Watch our video below on how to true a wheel to follow along. (Many multitools have a small spoke wrench built in.) Once all the spokes are snugged to about the same tension, spin the wheel and, using the brake calipers as a sight guide (or, in the case of disc brakes, a frame or fork tube), locate the spot on the rim that's farthest out of whack. Tighten the spoke opposite that spot to pull it back toward center. Repeat until the wheel is relatively true, or at least good enough to get you home, where you can get the wheel checked and completely fixed. ( 6 Daily Bike Maintenance Checks

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