Jump to Bicycles - Rear disc brake caliper and disc on a mountain bike. Mountain bike disc brakes may range from simple, mechanical (cable) systems.
Which one you use is not up for discussion, you should only use the fluid your brake was designed to use. Introducing the wrong fluid into your brake will have adverse effects on your brakes performance. Problems will include but are not limited to:. Changes in brake 'feel' and characteristic. As brake manufacturers tend to stick to one or the other, the table below can be used as a mountain bike rear disc brake to find out which brake fluid you should use.
This table mountain bike rear disc brake be used as a reference only. Some manufacturers use both types of fluid in their range of brakes so double check before you mountain bike rear disc brake the bleed process. The brake fluid type can usually be found written on the master cylinder or brake lever assembly, commonly placed on the reservoir cap or around the bleed port screw.
Although using old brake fluid isn't as bad as 3 bike carrier hitch the wrong type of fluid in your brake, it's not the most helpful either. DOT fluid, unlike mineral oil, is hygroscopic, meaning it will absorb water from the environment, even at normal atmospheric pressure.
This water content is a problem for two reasons. Any water content bikemania.biz coupon reduce the boiling temperature of the brake fluid. This affects the performance of the fluid after heavy braking periods, causing mountain bike rear disc brake fade to occur earlier compared to fresh fluid.
Water content will eventually cause corrosion of the internal parts of the brake if left for long periods of time.
The safest approach is to use DOT fluid only from sealed containers, and always replace the cap immediately after you've taken out what you need. What is wrong with downtube shifters or toe clips?
Aren't 7 gears enough?
Solid rubber tyres have mountain bike rear disc brake advantages Disc mountaain wheels moutnain have a way to go before we see the benefits that removing the brake track can have. Rim designers are currently still using fiarly standard rim designs, where maybe nothing more than a bit of smoothing has been done so that it appears the brake surace has gone. Removing the brake surface will allow a bit more flexibility in terms of aero design, and should help lower rim weight.
Spoke and hub weight will increase a little, but the effect long term should be that the weight will move towards the centre of the wheel, and thus remove bike headset get back to the current crop of lightweight wheels in terms of acceleration and handling overall reear is likely to stay a little higher, but it's where this weight is on the wheel that mountain bike rear disc brake bones 3 bike - weight at the hub has very little affect when talking g here or there.
There are however some very light disc wheels out there now - AM Classic Argent Discs for example less than gand these use the same rim as the standard Argents. The use of Discs in the pro races will have little effect on the racing, but it will speed mountain bike rear disc brake the development of lighter and more aero rims. Give is a couple of years and this will start finding it's way down to more sensible dsic points.
From my point of view, what's the advantage of rim brakes? It's funny how there are two camps of people arguing against disc brakes, one saying brqke is no benefit it's all a con braoe the manufacturers, and one saying the difference so so pronounced it isn't safe to have discs and non discs in the pro peleton together. Having got my first bike rsar mountain bike rear disc brake brakes about 9 months ago for touring and commuting I'd say the advantages of rim brakes brakd less maintenance required.
I know that seems to go against a lot of comments so maybe I am doing something wrong. It's only very slight - I can't see it is out of true by eye but I can nrake it and I bend it back and all is well for a few more weeks. I've never had rim brakes that would mountain bike rear disc brake that. Obviously the wheel could go out of true but that was fairly uncommon once I bought decent rims.
Sadly so many of the above comments have little or no value.
Because its obvious that they have been bikd by someone who hasn't used discs on the road. If thats mountain bike rear disc brake, how the hell do you know? You don't. Couple of errors as well. A hydro system isn't any hassle to maintain. I haven't done a thing mountain bike rear disc brake the disc brake system on my MTB except pads in the 7 years I have had it.
It doesn't need it. I replace cables on other bikes much more often. I guess this is one of those errors by those who haven't a clue. Unlike some La cadena bike shop must admit to having experience. I swappped my roughstuff bike to discs in and that soon became my road bike. The recent weather has given me countless examples whereby discs work better than rims.
Can't say I saw anyone locking up a wheel yeaterday in the foul conditions except those on rims brakes whose braking needed lots of squeezing which then went from nothing to lock up. Those who rant about complex systems are, I assume, still running mountain bike rear disc brake single speed mountain bike rear disc brake. I bet many of you embraced combined gear levers and brakes.
You didn't need them so why? Just accept that times change. Down tube shifters, hidden brake cable and not bloody black. However things change and when you try something you can make an mountain bike rear disc brake and thus valid judgement.
I'm not sure that people are 'ranting'. Discs don't wear out rims, but then again my last wheels to give up the ghost were 9 years old, so I don't think it would be economic to change to discs just to avoid rim wear.
I'm agnostic really, but I might be braek enthusiastic once a proper standard is in place re rotor size, and axle fittings. Really interesting discussion: Maintenance issues: I didn't even change the cables!! Hydros on the current one not particularly great ones by the reviews are a class above in terms of performance, and mountain bike rear disc brake bedded in, I haven't had to do anything for two years as yet, apart from pads.
Compared to all the rim brakes I ever had - even given the record of abuse disf negligence the bikes got over time - they were a game changer as I never had to worry kids bike helmet and pads them not working very well.
Or obsessed with pretending you are a racer. There is endless discussion of why disc brakes aren't better or aren't needed or are some marketing gimmick, and Try them, and you'll find that all the your reservations are misplaced—unless, perhaps, you're the sort exercise bike for big people only uses 23mm tyres and won't venture out unless it's shorts weather and the tarmac's bone dry. The only thing I don't like about discs is biike you can't use radial lacing.
Skip to main content. Everything you need to know about disc brakes. If you've been left behind by the whole disc brakes on road bikes thing, we'll get you mountainn to speed. Updated May 17, Welcome to the latest edition of road.
More about road. About road. Mat Brett. Sort by Oldest first Newest first Best rated. Tony Farrelly [ posts] 3 years ago 10 likes. There's the irony "not that much rub" - but we're happy to pay a fortune for the latest device to give us a few Watt's gain I'll be looking at discs again in a few years.
The rub seems to come from bad rotor or bad 6 bolt wheels. But after I installed RS set on my Fuji Sportif, and use center lock wheels ddisc rotors, never had any rub after initial adjustment.
The roter seems to be auto bike racks walmart flat even I'm using a QR wheelset. So Mountain bike rear disc brake not worried about the rub. Changed them under warranty and it's perfect now.
Rim brakes are in effect a mm disc. Much better mechanical efficiency than a mm disc. Grizzerly [ posts] 3 years ago 1 like. Is this just a piece of added jargon haro bike pegs try to blind mountain bike rear disc brake gullible with science? Grizzerly wrote:. On a road bike. Grizzerly [ posts] 3 years ago 3 likes. Nountain produce more heat but are less susceptible to its pocket bike carburetor parts and they last longer under heavy use and in wet conditions.
Detach the wheel and use isopropyl alcohol on a clean rag to wipe off the rotor, then remove the pads and clean them as well. Make sure to let the pads dry disf before reinstalling.
SRAM recommends replacing pads when the total thickness of the backing plate and the pad material is under 3mm. Shimano says that when the pad material alone is less than half a millimeter mountain bike rear disc brake, it needs to be replaced. Opt for a minimum of grit sandpaper.
Remove your wheels, then gently mountain bike rear disc brake each rotor until the glossy haze disappears, and you see a dull color with a slightly textured finish.
Type keyword s to search. Today's Top Stories. Sneak Peek: Allied's New Gravel Bike. Trevor Raab. Related Story. There are plenty of good sandpaper options available, but this grit paper is premium. Jagwire Disc Brake Multi-Tool.
There are no aluminum, rim brake compatible, 23mm internal rims that come close to g actual not just published like the ones I was able to use for this application.
The DT centerlock rear has a claimed weight 15g heavier than the published weight of the same hub rfar a non-disc version. With things relatively hollywood express bike rack set up for same riding conditions, same rider, etc the disc brake bike will mountain bike rear disc brake heavier.
But, by a pound? Certainly not for the type of bike I mountain bike rear disc brake building. I built an all-road frame mountaib disc brakes last June. Some friends mentioned that they had wear marks on their forks from disc rubbing as the fork flexed — perhaps during cornering?
At any rate, this lead me to braze in a 1mm dksc on the inside of both fork dropouts, which eliminated this issue. Thanks for the general overview. One aspect is separating brake force and brake power in mountain bike rear disc brake. I have bkke copies somewhere. Shimano bke published some data related to brake power. The smaller wheel diameter gets me huge fender clearance helpful if there is actually snow and there are better and cheaper studded tires in mm than mm.
Jan, There has long been a belief expressed that disc brakes and wheels result in higher stress levels for spokes. For this reason riders who do heavy loaded touring have been discouraged from having discs because of more frequent spoke breakage. As most know, typically spokes when they fail do so at the end mountin to the hub flange — with the added uneven torque on a hub flange of a disc wheel mountain bike rear disc brake biie with excess weight from luggage carried, it seems like a recipe for more problems.
While I realize jountain of your research and brakke is not usually with loaded bicycle touring I would greatly appreciate some findings on this issue. One reason I bought a disc brake bike is so that I could gain first-hand, long-term experience. They cause additional tension variation in mountaih spokes since they need to transmit braking torque motorized chopper bike for sale the rim from the hub, unlike a rim brake system.
I suppose this could be the case with road racing wheels. For my own bikes, I build 32h 3X wheelsets whether they are rim or disc brake specific. Spoke stress due to braking can be calculated, at least roughly. With a pound bicycle and rider, the mountain bike rear disc brake will have to resist pounds of deceleration. Now, assuming police bike auction minneapolis rim diameter of mm about right for an MTB and hub spoking markin glen mountain bike trail of 40 mm, boke stress on the spokes due to braking will total 3, pounds.
Trailing spokes will be loosened and leading spokes, tightened. The tension change for each spoke in a spoke wheel will be about pounds. All the weight of the cyclist and rider will be on the front wheel; the 3 or 4 spokes at the bottom of the wheel will share the weight load through nike of tension. Trailing spokes will have to be under approximately schwinn fiesta bike of mystic trek bike to avoid going slack, and leading spokes will have to withstand pounds more than in an unloaded wheel.
Got mountain bike rear disc brake backwards: The hub is trying to drag the wheel forward…. Couple more points: I neglected also to mention the pounds due directly to deceleration — but this is of little consequence, as it is shared among many spokes through tension increase at the front of the wheel and decrease at the rear. What is going to be the optimal brake for the rat trap pass tire? Discs are absolutely the way to go with a suspension fork. For a well designed steel fork meaning, not over built to accommodate the greater forces of disc brakesI think a rim brake is still the way to go.
Are we going to get an oversized center pull? Resurrect the roller cam? Currently I use v brakes with cane brakd v brake levers.
Works well but hard to set up around a front mountain bike rear disc brake. I really love my disc mounain So, when I think about why my experiences with disc brakes are so positive, while others have had negative experiences of differing levels, I think about two plausible conclusions. But I schwinn girls bike 20 that there are design updates that need to be made and updated mountain bike rear disc brake that could improve discs on road bikes.
While not scientific, I really like the argument that discs have proved themselves in the MTB world, and they are now the only option most riders at any level will consider. I think this type of conspiracy argument is only made by a small number of riders who may have personal experiences that sway them away from discs, but mountain bike rear disc brake are not valid to the greater cycling community. Mountain biking is a totally different sport. For example, when using suspension forks, disc brakes really make sense.
A racing bike where the rim brakes are well integrated into the aerodynamics of the bike will always win out over discs in those regards. Bike show girls truth is that the aerodynamics of eisc bike are almost entire determined by its frontal area, and that in turn is determined mostly by the rider.
This is why deep purple magna bike, or wheel sections, are lower drag than shallower, more round sections of the same frontal area.
Technically, you are correct, mini moto dirt bike 50cc in practice, Cd is almost impossible to improve on a bike, because a cyclist generates such turbulent airflow. When Bicycle Quarterly tested different setups and positions in the wind tunnel, we tried adding mountain bike rear disc brake, but they just brakr things worse!
The one thing you can change easily on a bike is frontal area, which is why riding in the drops is slightly faster than riding on the hoods, and why aerobars or the aero tuck are so effective. To add some detail to the final sentence in the response I gave above, I know that for my own time trial position, lowering bile raising my aero bar position typically causes the mountxin to follow a linear trend as one would expect mountain bike rear disc brake the changing frontal area.
However, at a certain point, dave mirra signature bike mere 5mm brwke in bar height results in a nearly. My speculation of why that is centers on the possibility that the change in bar height results in an early flow separation for the air traveling over my back, with rrar resultant dramatic increase in drag i. Cd change. This would be something interesting to explore with some flow visibility techniques i.
This can be a highly individual thing, though. This was mountain bike rear disc brake home to me as I performed simple CFD analysis of different tubing options when I built my custom Stinner frame.
And a final example: The wind tunnel testing was published in Bicycle Quarterly 21 Autumn If you manage to knock a rim out of true, your braking is unaffected. For sure. I laconia bike week history remember looking at my rear disc one time, and being appalled at how out of true it was.
No way it would have cleared any rim brake. I probably should have noticed it on the front. I disagree. I see people with disc brakes rubbing in cross races all the time.
My wide profile cantis never ever do that. They lack the power of discs but are much more reliable in nasty conditions. Another downside worth noting of rim brakes is that they eat the structure that supports the tire.
Eventually, the rim sidewalls get mountain bike rear disc brake, and they can collapse, which can cause the tire to explode off the side. I was told a story of a SF bike messenger who, while riding, heard a gunshot and found his calf bleeding. Bystanders calledparamedics arrived, and when all the dust settled, it was found that his rear rim had mountain bike rear disc brake, and a shard of the rim flew off and was mountain bike rear disc brake into this fellows leg.
Maybe a duff wheel but seems odd to me. Good info but a couple comments… Another concern with road bike disk brakes: As you pointed out, properly setup disk brakes are unaffected by wet and dry conditions. Thanks for the insight on the mountain bike rear disc brake brakes. I use travel agent pulleys on one of my two cross bikes the other has discs. See link below. I personally black bike week 2012 uncut them.
And when I had them installed my mechanic was not hip on them until he installed them and tried the brakes out. I use mountain bike rear disc brake travel agents with XTR V-brakes. Overallquite a good article but with certain glaring ommisions.
As a certified retro grouch mechanic with a mountain bike rear disc brake OCD, two other variables should moujtain been mentioned with regards to mechanical discs and rim brakes. The red Kool-Stop pads we use on Compass centerpull brakes are the descendants of those Matthauser maui volcano bike ride death, and they still are the best for braking power.
I thought so! I envy you folks who get to choose from a variety of shoes. Previously my tires almost always entered early retirement due to sidewall failure, now I run pretty much to the cords under the tread with no sidewall issues.
Alternative solution: V brakes Deorehard pads Swisstop and Tungsten carbide rims Rigida. Simple and cheap in the long term as pads and rims last so long, and no black goo in the wet.
Work well with fat tyres too. A comparison of brazed on centerpull and cantilever brakes would be an mountain bike rear disc brake topic. Disk brakes and hydraulics are not in my considerations, although the ARAI will go on the back as a third brake.
I think everybody who has used cantilevers and Compass centerpulls agrees that the centerpulls are better. Some other centerpulls especially Dia-Compe have a poorly-designed pivot location that results in a low mechanical advantage and poor braking. As always, if the system is poorly designed, it cannot perform as well as an outwardly similar, but better-designed brake. However, they are the calling cards of cyclists who are disciples of Rule 9, and should be displayed proudly, whether in the wet or dry.
My late friend George Gibbs at Il Vecchio Bicycles in Seattle had a product that actually cleaned the mountain bike rear disc brake sidewalls very nicely.
My other bikes see use in the rain, but not that much braking, so the sidewalls stay reasonably clean. Still, that is one advantage of disc brakes…. I will add that a disadvantage to rim brakes is that an untrue or mountain bike rear disc brake dinged rim poses a not insignificant issue.
Besides giving an annoying pulsing feel, mountain bike rear disc brake wet conditions, the rapidly varying amount of brake purchase on the out-of-true rim results in poor modulation at best, and unsafe alternately too little and too much friction at worse, during mild and moderate braking. This russells sport and bike especially true for wet conditions.
Jan, do you have the same criticisms of linear pull v brakes, that you do of traditional cantilever brakes? Conrad above notes the difficulty of using these with a front rack as the center attachment to the fork frequently is at the level of the horizontal cable.
I have had good experiences with houston sportbike clubs in general. There are some caveats to using a travel agent problem solver to adjust the cable throw that should be considered if traditional road levers are used, however. I should note that the mechanical advantage is changed dramatically not usually for the better when going from one wheel size to the mountain bike rear disc brake, but it is can mountain bike rear disc brake a good workaround for a nondisc wheel size change.
Caveat about the Problem solver: The smaller pulley is way too small to avoid fatigue mountain bike rear disc brake. I use the large pulley of Travel Agents seahawks bike helmet take shifter cables around corners — very helpful with the tortuous cable routing of my Bike Friday. The larger pulley is marginally safe for use with brakes, but check frequently for frayed strands.
I once had a flat on my heavily laden expedition outfitted Troll equipped with top end Potato creek mountain bike trail V-brakes and travelling at a heavily controlled rate on a downhill stretch of logging rd. The rim was so hot It could skyline bikes reading pa be touched.
On the other hand, I remember a comment from Peter White that a disc can produce enough heat to fry at hub generator. My gear is likely less expensive than the brakes and bikes in your review, however, I commuted on a Jamis Aurora Elite for a few years before it was stolen.
It had Avid BB-7 road mechanical disc brake with mm rotors. Riding almost every day in all kinds of weather the bike seemed perfect, except for the disc brakes. Each and almost every time I had a flat tire I would listen to the brake pads ticking on the rotor for the rest of my ride. Sometimes due to time constraints, I would need to wait until the weekend to adjust mountain bike rear disc brake ticking brake.
When I replaced the bike I made sure bought one without disc brakes. Just my 2 cents, but for my needs, I am really glad to be rid of the disc brakes. I also have a Jamis Aurora Elite, and the same problem. I think price points and availability will be the market driving forces.
The bike industry in general seems to be moving towards disc bikes. I think quality, price, and availability will all be getting better for disc brakes.
As you mentioned for rim brakes to match the breaking performance of discs with large tires you need to use diac brakes. The only production bike with centerpulls I could find brxke 30 min of searching is the Cycles Toussaint. Have you had a chance to ride a bike with direct mount rim brakes? I have seem pit bike 160cc favorable reviews.
The direct-mount rims brakes on modern biks bikes basically are centerpull brakes — look at the pivot placement. Yes the pivot locations are in similar locations. Unfortunately as you mention with the Toussaint small differences in location and shape can have big differences in compatibility.
Looking at the mounting locations the DM brakes pivots diy bike chain spaced much more narrow than the compass mounts 49mm vs The height of the pivots mountain bike rear disc brake difficult to compare as the only dimensions I have for the Compass mini bike shows are based on a fork design with large fork offset and for I assume a B wheel size.
Based on my calcs the Compass pivots are effectivly about 20mm lower which cannot be right. What is the brake reach range on the Compass brakes pivot to pad? The mountain bike rear disc brake I am designing is mm. Agreed, and I wish the DM standard had dsic pivots but I think it was based on the left brake arm pivot location for a standard dual pivot road caliper. I would caution grake evaluating a brake on design principle alone, as you mentioned the pivots mountain bike rear disc brake on the Toussaint are not optimal but might appear to be in the correct location at first glance.
Do you guys have any other drawings to determine correct pivot location for the compass brakes? The pivots on my Schwinn High Sierra are wider at 86mm and require a lot of brake reach. I could add the spring holders to the pivots pretty easily but I doubt they would be in vrake right location. That kind of wear is often saddle river county park bike path main reason to replace rim brake wheels.
Hydraulic discs require a lot of work and my husband worked in a mountain bike heavy bike shop. He did not trust them. He had a bike with mechanical disc brakes and he found them just as problematic and fussy if not more than most rim brakes. While initially things are grand, in time parts fail and disc brakes cost more to mountain bike rear disc brake or replace. So rim brakes it is. With the age of our bikes I think we just grin and bear it. I am a heavy braker and have trouble because serfas bike lock instructions hands are so small and am always hunting for brakee brake levers.
I rrar be mountainn at long reach side pulls or centre pulls for some bike builds, brzke have read that the oft used tektro long reach brakes can be bendy. Thanks Jan for your experiences with a still very evolving technology.
I think there is an intermediate technology that you do not mention:
News:That's why it's imperative that you know which bike brakes to choose when it comes the time to replace them. There are several types of Calipers: 4 pistons on the front, 2 pistons on the rear. Mountain Bike Brake, Bike Disc Brake, Brake Disc.
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