If your rear hydraulic brake is definitely acting up, the particular last thing you want to do is ignore it while flying down a steep trail or even navigating an active street. It's 1 of those elements that you simply don't actually think about till it stops carrying out the way it should, and by then, you're usually white-knuckling the handlebars. Regardless of whether it's feeling the bit "mushy" or even it's making a sound like a perishing goose, getting that stopping power to 100% isn't since intimidating as it might seem with first.
Precisely why Your Rear Brake Feels Spongy
We've all already been there. You pull the lever for the rear hydraulic brake , and instead associated with a crisp, strong stop, the handle pulls just about all the way to the grip. It feels like you're blending a wet sponge. Usually, it is a classic sign that some air has discovered its way into the system. Since hydraulic fluid doesn't compress but surroundings does, that small bubble is taking in all the push you're trying in order to send to the brake pads.
Bleeding the brakes is usually the standard repair here. Now, I know "bleeding" sounds like a messy operative procedure, but it's basically just pressing fresh fluid through the lines to conquer those air bubbles out. If you've never done it, it can end up being a little challenging the first period, but as soon as you obtain the hang from it, it's a complete game-changer for exactly how your bike feels. Just make sure you're using the right fluid—putting DOT fluid in a mineral oil system (or vice versa) is the quick way in order to ruin every close off in your rear hydraulic brake .
Dealing with the Infamous Squeal
There is nothing quite mainly because annoying as the rear hydraulic brake that shouts every time a person touch it. It's embarrassing, and truthfully, it's a bit distracting. Most associated with the time, this happens due to contamination. Maybe a little chain lube flicked onto the disc, or perhaps you touched the disk along with your greasy fingertips while fixing the flat.
If your patches are contaminated, they act like a sponge for essential oil. You can test sanding all of them down a bit or hitting them with a blowtorch to "bake" the particular oil out, but honestly? Usually, it's safer and simpler to just buy a new group of parts. While you're at it, provide the disc a deep clean with some isopropyl alcohol. If the particular rotor is glazed—meaning it looks such as a shiny mirror—take some fine-grit sandpaper to it to scuff it up a bit. This provides the pads something to actually get onto, which usually kills the sound and improves the bite.
The Difference Between Hydraulic and Mechanical
I get inquired a lot in case a rear hydraulic brake is really worth the additional hassle when compared with the simple cable-actuated a single. The short answer is: absolutely. Using a mechanical brake, you're fighting the scrubbing of the wire inside the housing. With a hydraulic set up, you're moving liquid, which is way more efficient.
You get what we call "modulation. " That's simply a fancy method of saying you have far more control more than how much braking force you're applying. Instead of it being "on" or "off, " a person can feather the particular rear hydraulic brake just enough to slow down with out locking up the rear wheel plus sliding all more than the place. Plus, they self-adjust as the pads use down, so a person don't have in order to keep fiddling with barrel adjusters every few rides.
When to Exchange Your Pads
Don't wait until you hear metal-on-metal grinding to check your pads. Simply by then, you've most likely already scarred your own rotor, which is a more expensive fix. Take a look inside the caliper every now and then. If the braking material (the stuff stuck to the metal backing plate) is slimmer than a dime, it's time in order to swap them out.
Depending on where a person ride, you might want to choose different pad compounds. If you're mostly in dry, dusty conditions, organic (resin) pads are usually great because they're quiet and have the lot of preliminary "bite. " But if you're driving in the mud or doing long, downhill runs where things get very hot, sintered (metallic) pads are the strategy to use. They're louder and take the second to heated up, but they won't fade apart when the temperature builds up in your rear hydraulic brake .
Upkeep Tips for Durability
You don't need to become a pro shady mechanic to keep your rear hydraulic brake running efficiently. A little bit of preventative treatment goes a long way. For starters, keep the pistons clean. Every time you modify your pads, consider a second to increase the pistons slightly (don't pop all of them the way out! ) and wipe away the brake dust and dust having a Q-tip drenched in alcohol. Pushing dirty pistons back again into the caliper is an visible ticket to sticky brakes.
Another thing to consider is button reach. Most contemporary setups possess a little dial or a bolt that lets you adapt how far the particular lever sits through the bars. If you have smaller fingers, or if you just prefer a various feel, don't be afraid to tweak this. It doesn't change the power of the rear hydraulic brake , but it definitely shifts how much control a person feel you might have.
The Problem along with Heat Fade
If you're doing big mountain descents, you might observe that your rear hydraulic brake starts to experience weak toward underneath of the slope. This really is heat change. The fluid will get so hot that it starts to shed its effectiveness. When this happens frequently, you might like to look in your rotor size. Switching from the 160mm rotor to some 180mm or even a 203mm rotor gives the system the lot more surface area area to dissipate that heat. It's one of the particular cheapest ways in order to get a substantial boost in efficiency.
Routing the Lines Correctly
If you're setting up a brand new rear hydraulic brake yourself, pay close attention to how the hose is sent. You want in order to avoid any sharpened kinks or spots where the hose may get pinched or even rubbed by body. Most modern bikes have internal redirecting, which looks very clean but could be a bit of the headache to setup.
Always keep a little bit of extra slack near the handlebars so the hose doesn't get yanked if you crash plus your bars spin and rewrite around. And no matter what you do, don't cut the hose pipe too short. A person can always trim a little more off, however you can't exactly "un-cut" the hydraulic line once you've nipped this.
Keeping the System Sealed
Hydraulic systems are "closed, " meaning once they're setup, they shouldn't actually leak. If a person see oily remains around the lever or even the caliper, you've got an issue. Usually, it's simply an unfastened compression nut or even a worn-out O-ring. If your rear hydraulic brake is leaking, end riding immediately. Not really only are you going to shed stopping power, yet that oil will almost certainly obtain on your parts and ruin all of them. Fix the drip, clean everything with alcohol, and after that put in fresh safeguards.
Final Ideas on Brake Performance
At the particular end of the day, your rear hydraulic brake is there to give you self-confidence. When you understand you are able to stop exactly when and where you desire to, you may ride faster plus have more fun. It's easy to get intimidated by the particular fluid and the hoses, require techniques are actually quite logical once a person spend a small time with all of them.
Keep them clean, verify your pads regularly, and don't hesitate to do the quick bleed as soon as a season. Your bike—and your nerves—will definitely thank a person when you're looking down a large portion of trail and need that dependable bite from your own rear hydraulic brake to stay in handle. It's about that peace of thoughts, understanding that when a person pull that lever, the bike is going to respond just how you expect it to.