Raleigh None manual How Brakes Work

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inoperative. Ask your dealer to make sure that you understand the way the brake quick release works on your bike (see figs. 11. 12, 13. 14 & 15) and check each time to make sure both brakes work correctly before you get on the bike.

2. How Brakes Work

The braking action of a bicycle is a function of the friction between the brake surfaces — usually the brake pads and the wheel rim. To make sure that you have maximum friction available, keep your wheel rims and brake pads clean and free of dirt, lubricants, waxes or polishes.

Brakes are designed to control your speed, not just to stop the bike. Maximum braking force for each wheel occurs at the point just before the wheel “locks up” (stops rotating) and starts to skid. Once the tire skids, you actually lose most of your stopping force and all directional control. You need to practice slowing and stopping smoothly without locking up a wheel. The technique is called progressive brake modulation. Instead of jerking the brake lever to the position where you think you’ll generate appropriate braking force, squeeze the lever, progressively increasing the braking

force. If you feel the wheel begin to lock up, release pressure just a little to keep the wheel rotating just short of lockup. It’s important to develop a feel for the amount of brake lever pressure required for each wheel at different speeds and on different surfaces. To better understand this, experiment a little by walking your bike and applying different amounts of pressure to each brake lever, until the wheel locks.

When you apply one or both brakes, the bike begins to slow, but your body wants to continue at the speed at which it was going. This causes a transfer of weight to the front wheel (or, under heavy braking, around the front wheel hub, which could send you flying over the handlebars).

A wheel with more weight on it will accept greater brake pressure before lockup; a wheel with less weight will lock up with less brake pressure. So, as you apply brakes and your weight is transferred forward, you need to shift your body toward the rear of the bike, to transfer weight back on to the rear wheel; and at the same time, you need to both decrease rear braking and increase front braking force. This is even more important on descents, because descents shift weight forward.

Two keys to effective speed control and safe stopping are controlling wheel lockup and weight transfer. This weight transfer is even more pronounced if your bike has a front suspension fork. Front suspension “dips” under braking, increasing the weight transfer (see also Section 4.F). Practice braking and weight transfer techniques where there is no traffic or other hazards and distractions.

Everything changes when you ride on loose surfaces or in wet weather. Tire adhesion is reduced, so the wheels

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Contents For multi-speed bicycles Read it before you take the first ride On your new bicycleGeneral Warning Contents Special note for parents First Safety FirstMechanical Safety Check Bike FitFirst Ride Safety BasicsRiding Safety Wet Weather Riding Off Road SafetyOff Road respect Night Riding Tighten any that are bent or looseExtreme, Stunt, Or Competition Riding Fit Changing Components or Adding AccessoriesStandover Height Saddle Position Use your bike for jumping or stunt riding, read .F againHandlebar Height And Angle Brake reach Control position adjustmentsTech WheelsAdjusting The Quick Release Mechanism Front Wheel Secondary Retention DevicesInstalling a Quick Release Front Wheel Installing a Quick Release Rear Wheel Removing a Quick Release Rear WheelInstalling a Bolt-on Front Wheel Seatpost Quick Release Installing a Bolt-on Rear WheelRemoving a Bolt-on Rear Wheel Brakes How Brakes Work Shifting Gears Shifting GearsHow a Derailleur Drivetrain Works Shifting The Rear DerailleurHow An Internal Gear Hub Drivetrain Works Shifting The Front DerailleurWhich Gear Should I Be In? Shifting Internal Gear Hub GearsPedals Bicycle Suspension Tires and Tubes TiresService Tire ValvesService Intervals If Your Bicycle Sustains An Impact Page Raleigh America, Inc. Bicycle Limited Warranty