Try spinning the wheel, and check that the brake pads do not touch the brake disc. A mechanical disc brake is made up a brake lever, a caliper, a cable connecting the two and a rotor. If you are clamping the cable with the arm rotated more than one quarter of its allowable distance, this is a good sign that your overall adjustment is not optimal. This arm contains the cable clamping and rotates when the brake lever is depressed. Not hydro but high-end mechanical brakes with the Avid BB7 Road SL brakes on the new 2015 Bianchi Zolder cyclocross bike. Hold the disc by placing your thumb and fingers on the disc’s 2 flat sides. There are two bolts that hold the caliper on the mounting bracket. The method to adjust the reach will be different for different brake brands. If the position of the caliper is too far outboard, such that you have to back out the inboard pad too far to stop the rubbing, then you will need to repeat your steps. Initially, however, the caliper still needs to be correctly aligned to ensure the pads contact the disc brake evenly, without any rub. If the inboard pad is too far out, when you hit the brake, the outboard pad will clamp the rotor against the caliper instead of the brake pad. Subscribe to Cyclocross Magazine today, and you'll receive in-depth content on riders, tech, reviews, and behind-the-scenes look at races. Live Help The down side is these poor conditions happen a lot easier to disc brakes than to cantilevers. Wheelies is a trading name of Performance Cycling Ltd. All Rights Reserved, We use cookies to provide you with the best possible experience. If you continue on, we will assume that we have your consent. … The second style has a movable pad, which has adjustability independent of the caliper arm. In either case, the essential setup goal is the same. Routinely adjusting your bike brakes will help them perform better and ensure you’re riding safely. service at the top of the page. Last-Minute Gift Ideas for the Cyclist…Or Essentials for Yourself! • Adjust the right and left clearances between the disc brake rotor and the brake pads so that they are equal. With the brake attached to the bike, loosen the caliper mounting bolts. Written on: July 14, 2020. This enables the caliper to be pushed sidewards. Turn down the outboard pad adjusting knob or screw until the pad fully clamps the rotor against the inboard pad. Love the bike except for the brakes :( Brakes are not too bad on the flat but when going downhill with my hands on top of the drops, i have to use all my hand strength to stop and even then it doesn't stop straight away. (A hydraulic brake replaces a cable with hydraulic lines, and adds a master cylinder at the lever). Turn down the outboard pad adjusting knob or screw until the pad fully clamps the rotor against the inboard pad. The first has no initial setup adjustability apart from how far the caliper arm is rotated and cable clamped. Tektro brakes are known for their reliability, strength, braking power and ease of adjustment. All brake adjustment can be accomplished with the cable disconnected. AL-KO offers 2 styles of mechanical trailer braking systems, mechanical lever drum brakes and mechanical lever disc brakes. Their benefits are well known; tire clearance is now only a matter of the frame. Inspect that enough inboard pad extends into the caliper. The second pad, the outboard, is the moving pad. This should give you a good, neutral lever throw with the best possible braking performance. Once you have achieved a caliper position that allows enough inboard brake pad into the center of the caliper and neither pad is rubbing, you can clamp the cable. See the photo below. Older IS mount calipers are aligned by using washer spacers of different thicknesses and flat-facing the eyelets with special tools. This is the number one problem with disc brake adjustments that I see. We recommend seeking the advice of a professional mechanic with access to advanced tools to align IS mount calipers. If you do get a cut, stop and wash it with soap. Squeeze the levers on both sides of the wheel to compress the pads against the rim, and hold them there. Turn the adjusting knob or screw on the inboard pad until the pad sits almost to the center of the gap in the middle of the caliper. All brake adjustment can be accomplished with the cable disconnected. Back off the outboard pad adjuster entirely. On the rear brake, the outboard pad (the one that get moved by the brake cable) is too far away from the rotor. Disc brake terms. Loosen the mounting bolts. With rim brakes your calipers used to live on the See the new updated video here https://youtu.be/CCf11y3mGpcIf your bike's brakes are too slack or too tight, then they'll need some attention. The rotor should be sitting center in the gap or slightly to the outboard side. Mechanical vs hydraulic disc brakes Although not all disc brakes function in the same way, the advantages described above are to a greater extent accurate for all disc brakes. I'll Be a Supporter. As your pads wear, simply use the pad adjusters to compensate for the wear. Disc brake calipers mount to fittings on the compatible bicycle frame and fork. Of the multitude of types and brands, disc brakes fall simply into one of two categories: hydraulic or mechanical disc brakes. Here we will show how to adjust the mechanical disc brakes. • Adjust the right and left clearances between the disc brake rotor and the brake pads so that they are equal. Clamp the cable: rotate the caliper arm back slightly and clamp the cable. This is the fixed pad - Shimano brakes typically use an allen-headed bolt, whereas Avid’s BB5/BB7 have a large red dial; Slightly loosen the bolts holding the main body of the caliper to the frame/fork/adapter. Turn the inboard adjusting knob in until the pad is about the center of the gap in the caliper. © Jason Gardner. Unlike hydraulic disc brakes, mechanical disc brakes are not self-aligning so will need periodic adjustment of the brake pads and cable tension to compensate for wear. These have a dial on the outside of the caliper-actuating arm which when turned inward will move the pad inward. In order to gain a proper understanding of disc brake setup, we need to have a full familiarity of the parts which comprise a disc brake. Bicycle disc brakes can be broken down into two categories depending on how they operate: The procedure for correctly aligning your disc brakes depends on which type you have. Your final adjustment should yield a solid feeling brake in which the brake pads squarely contact the rotor at the center of the brake caliper. View our, Mechanical disc brakes (aka cable disc brakes), Torque wrench with a set of allen bits (4mm, 5mm, or 6mm usually), Stiff card (old greetings card or business card), Wind the barrel adjusters all the way in – there will be one on the brake lever and (depending on model) one on the caliper, Retract the inboard fixed brake pad away from the rotor (i.e. Then back out the inboard pad adjuster just far enough that it no longer rubs the rotor. On most modern brakes the reach can be adjusted with a finger-screw or a 2mm bolt. When the brake pads are worn down, make sure to adjust the clearances of the inboard side and outboard side evenly at the same time in order to prevent the brake pads from making contact on only one side with the rotor. Van Aert Victorious at World Cup Overijse, Van der Poel Faces Technical Difficulties – Full Results, Alvarado Takes World Cup Overijse, Brand Wraps Up Series Overall – Report, Results, X²0 Badkamers Trofee – Flandriencross Hamme Results: Elite Men, Ask the Pro: Corey Coogan Cisek on Training Between Races, Last-Minute Gift Ideas for the Cyclist…Or Essentials for Yourself! Enjoying our comprehensive coverage of every title race? Brake Cable Brake Adjuster Over ride coupling Brake Lever Photo 2 1.Ensure that the brakes are correctly adjusted at the road wheels. Parts: Rotor, Calliper, Cable, Brake pads Screws: 1 and 2, for mounting the calliper. Just a light actuation is what you’re looking for. Then rotate the caliper arm so that it presses the movable pad in and clamps the rotor between the pads. Post mounted brakes will not have the adapter, so you won’t need to worry about it. To align a single-piston mechanical disc brake, you will need: Once set up, hydraulic disc brakes are self-centering, meaning you don’t need to make periodic adjustments to the pads. The objective is to adjust them so that the brake disc is situated centrally in the caliper slot. Join our team and make a difference in the sport. Mechanical disc brakes are generally cheaper (cost-wise), but not necessarily cheaper in quality. Here’s how to get it right. The first, the inboard pad, sits as a fixed/adjustable pad. This is an adjustment of the space between the brake lever and handlebar. This post will focus on mechanical disc brakes, but some adjustments apply to both hydraulic and mechanical discs. Although hydraulic disc brakes are now popular and standard equipment on many mid-range and higher cyclocross and gravel bikes, many of us still ride bikes with mechanical disc brakes and appreciate their advantages. SHIMANO ULTEGRA - Hydraulic Disc Brake - DUAL CONTROL LEVER - SERVOWAVE - 11-speed The SHIMANO ULTEGRA R8020 series shifters bring greater rider control in all conditions thanks to SHIMANO's category-leading hydraulic disc brakes. Figure 1 nearest the wheel spokes). 3.While holding the turn buckle, turn the adjusting wheel to either shorten or … When the pad is centered, tighten the hex bolt securely. How Disc Brakes Work On the inside of the rotor: you will have a brake pad that does not move. The rotor should be sitting center in the gap or slightly to the outboard side. For less than just one race entry fee, you can get months of ‘cross bliss, without the suffering. You need an Allen wrench on … By loosening them, you can move the caliper slightly from side to side. You can adjust the position of this pad in and out until it is as close to the rotor as possible without touching it using the Allen bolt on the inside of the brake. We are trying to achieve a brake in which the brake pads are aligned squarely with the rotor and the inboard pad protrudes far enough into the caliper to provide full clamping of the rotor between the two pads. In severe cases you’ll be fighting every pedal stroke as your brakes slow you down, and your pads will wear out quickly and unevenly. eval(ez_write_tag([[336,280],'cxmagazine_com-banner-1','ezslot_1',124,'0','0']));I know this was a long one, but proper setup is critical to getting all the benefits that this wonderful world of disc brakes has to offer. This method is highly unreliable and rarely results in accurate alignment. With the cable clamped you can then use the outboard pad adjuster to move the pad as close to the rotor as possible without it rubbing. 3 and 4, for adjusting the distances between the rotor and both sides. With both pads now firmly against the rotor, when the brake lever is released both pistons/pads will release from the rotor simultaneously. Replacement inner and outer cables can be found in any bike shop in the world, and they’re easy to change yourself – which is why I’ve long recommended mechanical disc brakes for touring and bikepacking. The Avid BB5 is the best example of this. The Avid BB7 and Shimano BR505 are examples of this style brake. We also share information about your use of our site with our social media, This is probably the most common problem you’ll have with your disc brakes. One final consideration involves how square the disc tabs are. See a qualified mechanic with proper tools for this work. You should ensure that they are within the range of 0.2mm to 0.5mm. Interbike 2014 © Cyclocross Magazine. Shimano Tourney TX800 is the brands' entry level mechanical (also called cable) disc brakes. On Shimano brakes, if you are having difficulties with the rotor touching the top of one pad and the bottom of another, then you may likely need to have your disc tabs faced. Consider a donation to support CXM. Loosen the hex bolt if needed to move the pad. We will stick to hydraulic brakes below. Tightening these bolts can often cause the caliper to move around, so it’s recommended to take it in turns tightening each bolt 1/4 of a turn using a torque wrench until the desired torque is reached, Wind the fixed pad back in towards the rotor until you can hear it gently touching the rotor while the wheel spins, then wind it back out in small increments until it runs silently, Slacken the cable clamping bolt on the caliper arm, Place the piece of card between the outboard brake pad and the disc rotor, Use the rubber band to hold the caliper arm in the 'on'. As we near cyclocross season, now is a great time to replace your brake pads and make sure the brakes are set up correctly. Regardless of brand and model, this article will help you gain the knowledge you need to adjust mechanical disc brakes. Note: This guide only covers flat-mount and post-mount style disc brake calipers. Back off the inboard pad until it no longer rubs. My bike has Shimano M415 mechanical disc brakes. The caliper, the actual brake bolted to the bike, is made up of two brake pads, inboard and outboard, between which the rotor will be clamped to provide the braking. Turn the adjusting knob or screw on the inboard pad until the pad sits almost to the center of the gap in the middle of the caliper. This action moves the outboard pad inward toward the inboard pad, thus clamping the disc rotor. Just enough to allow you to slide the caliper around The common mounting standard is referred to as the International Standard. Shimano brakes, however, are only adjustable side to side. If the inboard pad is too far out, when you actuate the brake the outboard pad will clamp the rotor against the caliper instead of the brake pad. SHIMANO Road Disc Brakes can make riding more enjoyable for a wider range of riders because of its consistent brake performance unaffected by weather conditions, lighter lever operation, easier brake power control, and the superior heat dissipation performance of ICE TECHNOLOGIES. That slight kiss from the disc onto your brake pads and the accompanying squealing/scraping noise can drive you mad. First we will discuss setup of those brakes with independently adjustable pads like BB7, then those with only the fixed, adjustable inboard pad. This is covered separately. Loosen the mounting bolts and try it again. I bought a carbon road bike about 4-5 months ago with Tektro Spyre dual pivot mechanical disc brakes. Part 2. Before we start, let’s define some terms. Reach adjust. Lighter front shift action and refined ergonomic shape sweeten the deal. Mount calipers our site with our social media, advertising and analytics partners Over ride coupling fitted a! 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