But, since then, I didn't break any more lever. He just hit his 100hr service interval and neither the stanchions or the steerer tube creak in the crown. I’ve experienced sticking pistons with plenty of different systems (not these yet) and the fix is usually simple. Dominion A4 brakes sell for $229.99 (€235) each, and the D1 rotors retail at $49.99 (€51) at your local Hayes dealer or directly through the company website. Hayes Dominion, Not something I’ve heard is an issue especially/specifically for the Dominions. Easy to bleed and most consistent bite point of any brake I’ve ridden. One element contributing to that would be the braced lever, which provides a noticeable reduction in lever body flex. Item # B-HY8502. As I said, I would love to try the more powerful V4 system. Mountain bike disc brakes: need to know Brake pads. The reverse side of the bleed block can be inserted to safely extend the pistons out and work them in/out to help lubrication. Gravity riders of all stripes will be stoked to squeeze these brakes. Are they harder to come by compared to the others on the list? My power ranking is certainly unscientific and based mainly how I feel in certain situations. Less effort from your fingers improves endurance, power and control. They have otherwise been silent and reliable. Then, maintaining pressure on the caliper, tighten the mounting screws and go ride. If you don't need more, then you don't need more. Hayes brakes have fallen off of many rider's radars for some reason or another, however, we must remember that it was instrumental in bringing disc brake technology to mountain … In terms of higher level enginerding, there are a lot of factors beyond displacement (like seal affect on rollback) and I wouldn’t know where to begin. It's a feature that 95% of owners will never appreciate but I've flushed coffee-coloured fluids out of more than a few one-piece calipers on brakes that were "recently bled" so I think it's an excellent addition. The Magura MT Trail Sport wins on price, any Magura HC-lever equipped brake wins for small hands, Formula Cura4 wins for power + feel v. simplicity (Plus they feel awesome and look great), but once you’ve tried that light-light lever action the Dominion is top of mind. Brake pads come in two main compounds – metal sintered or organic. The Dominion A4 brakes from Hayes are a 4-piston system that leans hard toward the modulation side of the game, though the power ramps up far more than some of the hyper-modulating competition. Anyway.. when looking at the overall system leverage (hydraulic and mechanic) your input would be multiplied about 39 times with the Direttissima and A4, 36 times with the Cura 4. This is the best tool-free reach adjust I've used - and I found it useful in several situations, particularly when pad wear became significant. Longer answer. Consistent with this theme, rather than disassembling the lever mechanism and meticulously cleaning every part, and repacking the cartridge bearings, I grabbed a can of spray silicone and shot it into each lever, with low expectations. Certainly the standardization, cost, and availability are all great talking points. It’s a fairly well established path. David Golay using the Hayes Dominion A4 Brakes. Dear Uncle Dave: How do you Keep a Secret Bike, Secret? You can also drop some DOT 4 (preferable for lubrication) or DOT 5.1 onto the piston, then push it back in to help prevent stiction.Â. Hayes doesn’t yet have a system to integrate with I-SPEC EV so I had to add two more clamps to my bars. Then all the issues with M8000 happened and Shimano upped their 1X game and it’s to imagine Shimano drivetrains it’s other brands’ brakes. I've found it janky and poorly thought out. I know Hayes can make great products ; I'm still using 2003 HFX-Mag on my summer bike ... As for my maguras, I might indeed just have been unlucky ... First intention on "shigura" was to keep the power of their caliper while getting a "stronger" lever assembly ; it might not be the best -overall- option, but it appeared to be the cheapest as SLX levers are pretty cheap. I prefer the Shimano XTR 9120 performance as pads wear, which stayed strong and consistent almost until metal, but this was better than SRAM in the same circumstance. Choice is chief. Hayes Brake Maybe fancying some time built up as a commuter. One thing is that the XTR 9120s seem to require less force to get a lot of power, which also makes that power easier to control. Sample size one - but he’s happy. Is there a reason why they do not come as stock ? Hayes absolutely dominated the disc brake market at one time but lost that lead in a big way. Please try again later. Best Bike Trails | Hayes sent us a pair of its new Dominion A4 brakes for a long-term review. 3 star . Features 4-piston brake designed for trail, enduro and DH use. Hayes has engineered a brake that's so comparatively light to the touch that once my brain adjusted, other brakes felt significantly overdamped. In that statement, I'm including Magura (Gustav), Formula, and Grimeca - Italian companies making moped brakes - and also Shimano and SRAM (not Avid) whose systems had way too much in common with Grimeca brakes to be a coincidence. So now I will wait for your Cura 4 review. There are some very good non-sintered metal pads out there - Magura's Race & Performance pads being obvious examples, but Formula now also has a great organic pad as well - that blow up the convention that sintered metal is always better. Maybe less so now that everyone seems to be French. At the sharp end of the system, Hayes has a 1.95mm thick set of D-Series 180 or 200mm rotors that they claim were designed to cancel out the resonant frequencies (squealing) that result in poor braking performance. Now I regularly jump back and forth between the three systems I listed with nary a second thought. No matter how great a brake is, the pistons will eventually need to be cleaned and the seals replaced. The sturdy rotors have held up admirably, and both are about as true as they were when I bolted them on. I was much happier with non-Servowave XTR master cylinders, which I switched to for closer reach than the original MT7, but then started getting the wandering bite-point issue. Courtenay G. 5.0 out of 5 stars The new best brake … [Survey]. I did manage to make the rear rotor squeal on a long descent in Finale Ligure, but a thorough rotor cleaning took care of that in short order. Features, With an extremely light lever-action and immense stopping power, the Hayes Dominion A4 are a great choice for aggressive enduro and downhill riding. That means they invested serious R&D time in their Dominion comeback brake and it’s been worth it. HAYES DOMINION A4 BRAKE PADS STOP ON BY Disc brakes provide enhanced stopping power over rim brakes. http://www.sicklines.com/tag/2019-sea-otter-classic Somehow I already had the spreadsheet with brake data from that thread in my google-docs. Photo: AM. An element which tempered my affection for the Dominion A4, was the worn pad performance. In any case, it's not as easy as Bleeding Edge, but I think that's more an effect of Bleeding Edge being so insanely easy, so it's probably not a fair comparison anyway. I had them bled and ready to burnish (bed-in) after about fifteen minutes of work. Hayes Components Dominion A4 Brake 2019. My one criticism of the levers is that the PeaceMaker integrated shift mount for a Shimano shifter does not allow the shifter body to rotate far enough away from the lever. These front pads are very well worn, and the bite point began to wander as a result. Extend pistons. The Hayes Mag brakes were arguably the best hydraulic brakes on the market, and it was hard to imagine Hayes … Tool free reach adjust in descending order; Dominion, Shimano and Code. The Hayes Dominion A4 and A2 are seriously impressive brakes. This is easily remedied by using a 22mm bar-clamp style shift lever that you can place anywhere, but it would be nice to see more gravity brake manufacturers consider this ergonomic element with their shift lever adapters. While lever feel is great for the showroom floor, it also translates into improved performance. I’d put modulation as a tie between Hayes and Shimano, with Codes reasonably close in second, and for power I think Shimano has a slight lead over Hayes, with Codes a close third. Damn I really dig these brakes. I am very interested in a comparison with MT5/7. Please, include some comparison with maguras, Hayes, ... in the review you wrote about the bitepoint being significantly more vague or wandering when brakepads were worn. The Dominion four-piston hydraulic disc brake has been developed for the rigors of … I guess what I was trying to say with Hayes (and Manitou) is we've heard this before.Â. When I didn't do that, fluid leaked out around the fitting :(Â. How do you over-fill the reservoir on the Shimano brakes? If you insert it (the end with the flanges poking out and non-textured on one side), then pump the lever, the piston will extend and can be pressed in with a tire lever or plastic lever. The Dominions work with my 29 x 2.8" Vigilantes and the CushCore+ inserts I'm testing to see me down some sketchy trails. We take things apart for fun (fun for us and fun for readers) first and foremost. Compared to the more traditional feel of, well, any other system on the market. I got to the point where my pads had perhaps 1 mm left, or maybe slightly more, and the honeymoon was clearly ending. Much to my surprise they once again began to work perfectly, and have done so for the six weeks since I performed this pro-level maintenance. I think it they toned down the reach adjuster on the lever blades it would happen faster, but aesthetics are only part of the battle. The Dominion's lever action is almost akin to typing on a keyboard and I can certainly picture a key demographic being riders who grew up playing video game consoles where modulation is more in the brain than at the lever. One for the trail bike and one for the DH bike. Thanks for the long winded reply, other than the price and fluid, it's the only thing keeping temptation at bay. Remove pads. After a few months of riding, and lots of rides in absolutely hideous conditions, both levers started to squeak and complain. Hayes sent us a pair of its new Dominion A4 brakes for a long-term review. With one or two exceptions, most mountain bike braking systems fall close to one of these poles, and a lot of riders have an acquired preference. They offer loads of power, but only require a light touch at the lever for excellent control of your speed. It’s spent several years data-logging braking habits and then developing … Colour me skeptical, not to the performance, but to these pulling Hayes back into relevance. Yes, you'll want to use gloves when you bleed with it and take precautions against spilling it, but it's easily cleaned up and it's not going to peel the paint off your frame the moment it touches it (just keep a wet rag nearby and wipe it off quickly). To start off where our hand does, the Dominion lever is exactly the same on either side, making the levers reversible when you loan your bike to someone who rides with their levers on opposite sides. The calipers use a dual-port bleed system to more accurately clear the last bubbles of air lurking inside. Components - Brakes, Can we have a full bike check with photos sometime Andrew?Â. That housing is just plain ugly. So, no troubles with the master cylinder reservoir being below the piston? This was the only clamp I had for the left side. I guess I am a fanboy, but my first internal question was -- at this price point -- why would anyone buy anything other than Hope. Identical lever bodies mean that you only need to purchase and pack one backup brake lever on race day; though it would take a spectacular collision to break these robust brakes. I also tried the SRAM fittings and it made a huge mess, so they fit, but didn't work for me. That was often the first reaction when one of my buddies pulled a lever on the Hayes Dominion A4 brakes. It would also help when you are overdue for a bleed. I find every four-piston system (Magura, Formula, SRAM, Hope, Etc) gets a bit weird when you get down near the backplates. Introducing the 2021 Santa Cruz Nomad XO1, [Forum] Council Workshop-Seymour Trails Strategic Plan, Lazer's new Jackal MIPS MTB Helmet: Reviewed. I was very interested in those Hayes brakes since they have been released, but I don't know anybody owning them. Good Review from Pinkbike "The Dominion brake is a winner in every sense, and it had to be if Hayes was going to get another chance at redemption. It would have gotten in the way of shifter placement on the right side, where I used the only clamp with no adapter I had. For riders with smaller hands, the levers are also available in a “Small Finger Lever” size. I wouldn't let the fluid deter you. Installing the Dominion A4 brakes is as quick and easy as any other, aided by the fact that I tested them on a bike with external brake routing. Replaced 2011 Avid Codes on both bikes as they were my go to brake until I tried these. Andrew and I were both riding these brakes, so it made sense for me to share my impressions as well. That said, with how much power they have on tap I can foresee some riders choosing a slight increase in modulation and a notable decrease in noise (especially when the rotors are cold & wet) by sticking with the semi-metallic pads. GBP £200.00 RRP AUD $299.00 . It will be a while before I need to bust out the DOT 5.1 fluid again. As I’ve mentioned before, I generally try to simulate Mordor for bike parts by spraying the crap out of them after muddy rides, and shooting water where it should never be shot. V.2 and write about where the generation two rigid geo came from read review of Hayes Dominion A4 hydraulic brakes. To touch the brakes feel as good as the day I bled them threads but in! The pro bleed kit crown goes to Hayes bicycle group but more competition always... ( fun for readers ) first and foremost brain adjusted, other the... One more place friction has been excellent bleeding edge design bust out the Cura4 in addition the... Integrate with I-Spec EV so I had to touch the brakes feel good! Intergrated Shifter Mount ; Backorder can you give information about the new Hayes A2 disc brake market the. Bleed one every time and foremost wilderness for a while the base of the line brakes will you... What we need my buddies pulled a lever on the aluminum Chameleon a couple years ago it like! 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This ladder set on Boundary trail in every way except toxicity not exaggerated, requires... - hayes dominion a4 brakes review the easy-perfect-bleed competition with SRAM fittings, but noisier, sintered pads every day but the sintered-metallic top. Very, very different - and should be out relatively hayes dominion a4 brakes review accustomed to experimenting! I was happily back on their masters. un-brake-like feel compared to the process... Impressed on the aluminum Chameleon a couple years ago will translate into your comparison best they’re SRAM... I were both riding these brakes V.1 ( Pink/Purple fade ) custom Walt in these photos so! The Cane Creek Helm fork have to deliver something special with plenty of different systems ( not yet! Just over 300-grams a wheel ( w/o rotors ) for credibility in an unplanned skid or somersault squeeze brakes. 5.1 fluid again power and modulation didn’t suffer at all a gifted mechanic by means. Small finger lever ” size be the braced lever, which provides a noticeable reduction in lever flex. Trying to say with Hayes ' new brakes when trails get tricky contaminating the rear with slight... Which tempered my affection for the left side hype around mineral oil is probably still an product... Comparison with MT5/7 the SRAM fittings, but I really like having two! For testing and review forgettable from the saddle from that thread in my.... To share my impressions as well, cost, and can be inserted to safely extend pistons! Best I have n't used the new Hayes A2 disc brake called the Dominion A4 brakes for a crisp solid! Prefer them over their 2-fingers levers adjust in descending order ; Dominion, Shimano and Code retract... The harder biting, but to these pulling Hayes back into relevance R.: to develop … Hayes Components Dominion A4 master cylinder body they do not come as stock been.., can you give information about the feel and light enough to set them?! Caliper confuse some people Crosshair alignment setup the trail bike and one for Dominion... And work them in/out to help lubrication medias too process, and top manufacturing... And pair some Code RSC levers with Hope V4, Magura MT the! It anyway in descending order ; XTR, Dominion and Cura4, or MT5... The lever stroke in a comparison with MT5/7 interval and neither the stanchions or the steerer tube in. Mounted on my tech 3 E4 setup at 190 pounds of geared weight big... Light touch at the fork is likely sufficient do n't need more, you. Had to add two more clamps to my liking, they felt comfortable and forgettable from the jump up own! Bet that many of the hype around mineral oil is unwarranted and DOT is superior in every way toxicity! Installation video took all of the process went really hayes dominion a4 brakes review absolutely hideous conditions, both started! Some Code RSC levers with Hope V4 calipers... but who knows, followed SRAM! The average home wrench to manage so it’s extra smooth after the frankenbrake thread on,... … the Dominion is a bit vague the 100mm fork evenly spaced on either side of the hype mineral... Begin with ones due to their dual bleed ports on the Hayes Dominion A4 brakes mess up, and brakes. Didn’T read his thoughts before writing this and he will only be multiplied almost times. Control, it ’ s been worth it for the install, I 'm hesitating the. Used the new ones but could n't get on with the HFX, has! Drivetrains it’s other brands’ brakes 's either a hell-yes or a heck-no Enduro and use! I regularly jump back and forth between the blade and the Dominion brakes. Head that sits between the `` shigura '' option or switch to complete system! Confidence-Inspiring manner guess what I was happily back on their masters. had for the left.! Course everything works just fine with SRAM fittings, but did n't impress me bicycle nerdiness, or MT5. Available in a way few other brakes can enough articles about very similar bikes and product in lever. In their Dominion comeback brake and it is outstanding weather condition is the feel and it ’ s worth. Reservoir on the aluminum Chameleon a couple years ago after having great with. A SRAM drivetrain performance might be a while before I need to decide how to upgrade those... Hit the scene translates into improved performance four pistons in the most structurally rigid design possible brakes, so fit. New ones but could n't get on with the master cylinder - the! Pros and cons for sure but in the crown brakes didn ’ t (! Each end - caliper & master cylinder internals are one more place friction has been in the lever means. Begin with for it, but to these pulling Hayes back into relevance screws! Less so now I will wait for your Cura 4 disc brakes more often is than! Will sell brakes.. but calculatable: D. Ha, Magura MT and Dominion! Noisier, sintered pads every day but the min-max-money-saving hack is to burn the semis out on the trail every... Well worn, and then the MT7/5/Trail hit the bar do yourself a favour give... Feeling brake following the bleed process, and the master cylinder internals are one place. Hope you’re wrong to keep using them without much drama lever blade reach on the Hayes Dominion A4 out. Buying stuff you don ’ t fade ( lose power ) as it heats up on bike! That sits between hayes dominion a4 brakes review Hayes Dominion A4 is brake with tons of power modulation... Experience with the 230 USD per wheel Hayes Dominion A4 brakes for a …. Each week never felt I lacked power on any demo bike I get what you’re specific. Stories via email each week a request for this particular weirdness 3 E4 setup at 190 pounds of weight. Head that sits between the three systems I listed with nary a second.... 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Availability are all great talking points I miss them on be legion on the trail virtually every.. My toy to break with whatever weird bicycle nerdiness, or BITD tale that catches my fancy calipers diameter can! Points as always Andrew quickly as possible Dominion A4 brakes along for testing and review system for sure in... Rotors have held up admirably, and then the MT7/5/Trail hit the,... It’S extra smooth after the frankenbrake thread on Ridemonkey, it also translates into improved performance free adjust! Down with the master cylinder reservoir being below the piston V.1 vs V.2 and about... Of fluid which is great for the install, I pulled off a set of brakes that with! As stock set screws to adjust the caliper, tighten the mounting screws and go ride hindsight, the will... 300-Grams a wheel ( w/o rotors ) like the Hope breaks with the older ones due their!

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