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RoJo1 Liked a reply to forum topic Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/23/2025 9:02pm I did A-B-A testing on each day aiming to get in 5 quality laps before swapping tyre, then 5 laps, swapping back again and another 5 laps. Timing was done by picking the exact GoPro frame where I crossed a specific feature on the trail, e.g. tree, rock, post etc so that I could get accurate timing to 1/60th sec and construct a perfect lap taking the best from each sector. The results often surprised me and I think "feel" can be misleading. The Assegai for example felt epic, but in the data it is slower in every sector.
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Glenngineer Liked a reply to forum topic MTB Tech Rumors and Innovation
1/22/2025 9:40am
This forum topic has 30430 replies.
TEAMROBOT Liked a reply to forum topic Need Help Picking Parts for DH Race Bike for 2025
1/22/2025 8:58am I know you asked for help choosing between A or B, but have you tried C, D, E, F, G, H, or I? I haven't ridden A or B but I came here to say you should really think about C, D, E, F, G, H, or I.
This forum topic has 17 replies.
Teknik Added a reply to Nerding out on Brakes shall we? Not another tech deraliment
1/12/2025 12:49am Could this be one part of the equation that makes green Shimano brake fluid go dark together with dirt from slave pistons? I cleaned and checked the actual bore and there's no sign of wear. If the piston would be metallic instead of plastic I guess there could be signs of wear. This could be case with aftermarket titanium etc...
Teknik Added a reply to Nerding out on Brakes shall we? Not another tech deraliment
1/11/2025 1:41am Has anyone thought (in theory atleast) about modifying a motorcycle brake master cylinder, like a Brembo or equivalent, for use on a downhill bike? What issues, aside from handlebar radius and the large brake fluid reservoir, might arise?
TheKaiser Liked a reply to forum topic Nerding out on Brakes shall we? Not another tech deraliment
1/10/2025 8:58pm As Primoz just said, clearly its being sideloaded. In addition to that, it might have to do with the surface finish on the inside of the master cylinder body. In the huge volume of discussion of the Shimano wandering bite point phenomenon, I saw it pointed out that Shimano master cylinder bodies are bare aluminum, while the claim was made that other more boutique brakes like Hopes are hard anodized after the master cylinder is bored, so they have a smoother internal surface. I could imagine that after a lot of cycles, especially if there is any oxidation that has...
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Teknik Added a reply to Nerding out on Brakes shall we? Not another tech deraliment
1/10/2025 10:21am Any (real) idea why one side of the Saint master piston looks like it has been scratching itself to the point that the surface looks matte? The other side looks more glossy and normal.
Teknik Added a reply to Nerding out on Brakes shall we? Not another tech deraliment
1/10/2025 1:43am Crosspost from another forum but I find the information interesting: https://www.emtb-news.de/forum/threads/bremsscheiben-design-vs-funktion… Tirolbiker63 seems to be on the topic. I'm not sure if he posts here either. My finding from here was that Intend 220m 2,3mm or Brakestuff discs would be quite okay upgrade to my current Shimano Saint with 203mm icetech rotors.
TheSuspensionLabNZ Liked a reply to forum topic 2.3mm rotors on Shimano brakes?
1/10/2025 1:05am I reckon it will be sweet. We ran some 2.0mm thick galfer discs in some saint brakes for a day of collecting data and they worked great. I'm sure another .3 will be fine, the servo wave design on their levers is designed to give them tons of clearance
This forum topic has 20 replies.
TEAMROBOT Liked a forum topic 2.3mm rotors on Shimano brakes?
1/10/2025 1:03am Has anyone tried running 2.3mm rotors on Shimano brakes, or on any other brake system designed for 1.8mm rotors? I'm sure this is the worst idea ever, and I'm sure there's a very good reason why this won't work, but I've got tons of clearance on my pads (more than .5mm) and the problem I'm trying to solve is the insanely long lever throw on my Zee brakes. I've tried hyperextending the pistons during a bleed to shorten the lever throw, but that always seemed like a PITA and an imprecise way to move the lever feel. It was really...
This forum topic has 20 replies.
RiderMikeCheck1 Liked a reply to forum topic MTB Tech Rumors and Innovation
1/9/2025 11:13am Something everyone has to realize about UBM and UDH is that SRAM is in the business of selling OEM to massive bike companies. Anything SRAM can do to make the process faster and cheaper/better for the OEMs is seen as a win. In the case of Transmission/wireless drivetrains, that is a WIN for OEMs. Say they can shave -5-10 minutes a bike not having to deal with cables, setting stops, tension, etc. They can install a Transmission drivetrain in <5mins, vs. say 10-12min for a cable-actuated version. Now, multiply that times 20,000 MTB builds and you have million(s) of dollars...
This forum topic has 30430 replies.
e*thirteen Liked a reply to forum topic e*thirteen's Sidekick Hub: Impressions & Discussion
1/6/2025 8:53pm The Sidekick uses a 45T ratchet ring that translates to an 8 degree "traditional" engagement. The degrees on the pusher are reflective of just the pusher movement itself. So, if we are talking the total possible degrees: the 12 degree Pusher setting would be 12-20 degrees, the 15 degree Pusher setting would be 15-23 degrees and the 18 degree pusher setting would be 18-26 degrees. It's important to remember that those are the numbers on paper, but in actual use there are constant suspension inputs, freewheeling that is resetting the pusher back to zero, and a few other intricacies. We...
This forum topic has 70 replies.
Teknik Added a reply to Tire chat (nerds only)
1/6/2025 2:02am The new DH16 would be interesting to test if it's rolling resistance is lower so it should be little faster. I'm not sure how often I end up riding in wet or muddy conditions downhill as I understood it's more meant for dry conditions. I've used in 3 years DH34/DH34 + DH34/DH34 and last season DH22/DH34 combos. The rear DH34...
earleb Liked a reply to forum topic Tire chat (nerds only)
1/6/2025 1:52am Has anyone ridden the new Michelin DH16? Sounds like the updated casing is a bit lighter on the new DH tires.
This forum topic has 1973 replies.
Primoz Liked a reply to forum topic The Mountain Bike Bearing Discussion
1/6/2025 12:58am The bearing you are looking for is a dual row angular contact ball bearing, Kugellager express has it. It's a 3802. Enduro also has them. Notice the numbers you are comparing are static vs. dynamic loading which is not the same. As for bushings, they are technically ideal for pivots, but require additional sealing (could be used for bearings to prolong the life as well, based on how often it is implemented it's science fiction for the bike industry...), a hardened axle to slide in the bearings, but the problem is they need clearance to operate and thus you will...
This forum topic has 53 replies.
Teknik Added a reply to The Mountain Bike Bearing Discussion
1/6/2025 12:42am Sorry my typo! I corrected to my post that the numbers were static load. I'm not saying that it matters but I find it little interesting that Endurobearings exceeds most normal bearings static load rating like it's 4x what FAG has. I wonder what makes the difference? Kugellager Endurobearings FAG 3802-B-2RSR-TVH-HLC
HexonJuan Liked a reply to forum topic Nerding out on Brakes shall we? Not another tech deraliment
1/5/2025 11:52am Cleaning pistons is good general maintenance and makes a difference in the seal longevity and helps clear up the bores of any material that might lead to corrosion build up, but I'd just go ahead and order one of the aftermarket rebuild kits on Amazon/Ali and swap the pistons and seals out. Then you'll be well able to clean the piston pockets, ensuring less likelihood of corrosion build up. Those kits work well enough and are cost effective, so if you're going to disassemble a caliper you may as well rebuild it with fresh seals and pistons. Air compressor works...
This forum topic has 2965 replies.
sprungmass Liked a reply to forum topic Tire chat (nerds only)
1/5/2025 10:05am I found that info on NSMB's article here: https://nsmb.com/articles/continental-kryptotal-tires/ " If I were to draw parallels to what majority of the mountain bikers are used to, the Soft compound is similar to Maxxis MaxxTerra and Super Soft is much like MaxxGrip. I've been told by the development team that the knobs are at 40/42a durometer on the Super Soft and that's a wonderful thing for the North Shore Survival toolkit!" I did some durometer testing and forgot to share the results here but your guess is pretty bang on! I found my Rekon Maxterra reading to be pretty wild. The...
This forum topic has 1973 replies.
Teknik Added a reply to The Mountain Bike Bearing Discussion
1/6/2025 12:07am Excellent topic once again! My Mondraker uses 10pcs 15x24x7 3802 size bearings. The upper and lower linkages seem to eat bearings even though I've made a small additional mudcover. The original bearings can be found priced around 55 - 130 euros as a set but I'm not sure what's the quality. I would like to buy and test some "premium"...
lando Liked a reply to forum topic E-bike talk: not tech rumor derailment
1/3/2025 10:41pm
This forum topic has 1720 replies.