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- Noticias
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Types of Brakes Used on Mountain Bikes
There are mainly two types of brakes used on mountain bikes: rim brakes and disc brakes. Both have their own advantages and disadvantages depending on the type of terrain and rider preference.
- Rim brakes (v-brakes): These brakes work by applying the brake pads directly to the rims of the bicycle. Although cheaper and lighter, rim brakes can be less effective on wet or muddy terrain, as dirt and water affect the contact between the brake pads and the rim.
- Disc brakes: Disc brakes have gained popularity among mountain bikers because of their increased stopping power and ability to perform in extreme conditions. There are two types of disc brakes: mechanical (cable-actuated) and hydraulic (fluid-actuated). Hydraulic disc brakes, although more expensive, offer superior performance, requiring less effort and providing smoother, more controlled braking.
Regular Inspection and Detection of Common Problems
Regular brake inspections are essential to ensure optimum performance and avoid mechanical problems on the road. Some of the most common problems with mountain bike brake systems include:
● Brake pad wear: on both rim brakes and disc brakes, brake pads wear over time. If you notice that braking requires more effort or that performance has decreased, the pads may need to be replaced.
● Brake misalignment: On disc brakes, the discs may be slightly misaligned, causing the pads to rub steadily against the disc and generate friction. On rim brakes, misalignment of the brake pads can make braking ineffective or noisy.
● Spongy brakes: In hydraulic brake systems, a spongy feel at the lever may be a sign that there is air in the system. Bleeding the brakes is necessary to remove any air bubbles and restore firm brake feel.
Brake Pad and Disc Replacement
Regular replacement of brake pads and discs is essential to maintain optimum performance. Here's how to know when it's the right time to do it:
● Brake pads: Brake pads should be replaced when the friction material has worn to less than 1 mm thick. On disc brakes, you should also check if the pads are contaminated with oil, which can drastically reduce braking power. If the pads are crystallised, they should also be replaced.
● Brake discs: Brake discs also wear out over time, and should be replaced if they have thinned, cracked or warped. A brake disc that has reached its minimum thickness limit no longer offers the strength needed to brake safely.
How to Clean and Adjust Brakes Properly
Mud, dust and moisture can build up in the brake system, affecting its performance. That's why regular cleaning is essential, especially after riding on rough terrain or in wet conditions. Here are some guidelines for cleaning and adjusting your brakes properly:
● Disc brake cleaning: Use a disc brake cleaner and a clean cloth to clean the discs and pads. Avoid touching the discs with bare hands, as oils from the skin can affect braking performance. Make sure the pads are not contaminated by grease or oil.
● Disc brake adjustment: To adjust mechanical disc brakes, use the adjustment knob on the brake lever to reduce or increase cable tension. On hydraulic brakes, it may be necessary to bleed the system if air is trapped.
● Rim brake adjustment: Adjust the cable tension with the barrel adjuster on the brake lever. Make sure the brake pads are aligned with the rim and touch the rim simultaneously when braking.
Tips for Improving Braking in Difficult Terrain
Braking in hilly and difficult terrain requires more technique and precision than in normal conditions. Here are some tips to improve your braking in difficult terrain:
1. Brake gently: Avoid braking sharply, as this can cause the wheels to lock up and you may lose traction, especially on loose or slippery terrain. Apply the brakes progressively and firmly.
2. Balanced use of both brakes: Learn to balance the use of the front and rear brakes. The front brake has more power, but if you apply it too hard on an incline, you could roll over. The rear brake helps you control speed without losing traction.
3. Body position: When braking downhill, take your weight backwards, distributing the load over the rear wheel. This prevents the front wheel from locking up and helps you maintain control of the bike.
4. Adjust your speed according to the terrain: Before tackling technical sections or steep descents, reduce your speed beforehand. This will allow you to maintain control and adjust your braking according to the terrain conditions.
Conclusion
Proper brake maintenance on a mountain bike is essential to ensure safety and maximise performance, especially in difficult terrain. From regular cleaning to inspection and replacement of pads and discs, following these guidelines will help keep your brakes in top condition. In addition, proper braking technique can make a big difference to your mountain biking experience, improving your control and confidence on every ride.