If your bicycle has mechanical disc brakes, they are easy to adjust, and you can adjust them using th. If it's a more basic version, have a look at our guide to the best mountain bike disc rotors and consider upgrading to a more efficient model.Īnd if you're having problems with your gears, you might wish to take a look at our guide to adjusting mountain bike shifting. Here is how to adjust mechanical disc brakes on a bike. If it proves impossible to true your rotor or you've completely spangled bit in a crash, you'll need a buy a replacement. Repeated gentle bends should stop you bending the rotor too far in the opposite direction and creating more problems. Repeat this process until the rotor no longer rubs. Once identified, gently bend the rotor back. 999.00 Fastped MTB Bicycle Break Gear Shifter (3 X 7) 21 Speed Cycling Disc Brakes Levers with Shift Cable 2Pcs/Pair 540 299 00 599.00 Fastped Mtb Aluminum-Alloy Folding Bike Bicycle Mechanical Disc Brake (Front/Rear Calipers), Black 410 299 00 999. Truing a rotor is simple case of locating the point that rubs and determining the direction it needs to be trued to stop it rubbing. Bike Adaptor Bracket Bicycle Frame Mountain Adjustable Disc Brake Kit Conversion Clamp ring 22MM 12.39 22.99 Frcolor Brake Disc Bike Kit Mountain Caliper Rear Rotor Front Mechanical Hub Conversion Set Road Cable Levers Disk 11.50 HeroNeo Disc Center Lock Hub Conversion Mountain Centerlock to 6-hole Bike Brake Adapter From 8.16. Whether you use a tool or not, the most important thing to remember when dealing with a rotors is that whatever touches the braking surface should be as clean as possible. Crashing is often the primary cause although impacts from trail debris or a simply bump when the bike is leaned outside a cafe or in a bike rack will do it.Ī rotor truing tool will make the job a lot easier, an adjustable spanner works well too and if you are in a squeeze a rotor can be carefully bent back by hand. Tighten the caliper mounting bolts while keeping the brake lever compressed (Image credit: Rich Owen) Straightening a rotorĭisk rotors are designed to be very strong in a vertical plane, however even light impacts horizontally can bend a rotor enough to rub.
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