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Pull apart any Sram brake (I have experience with those, not with any others sadly) and you can see the piston is scratched on one side. That's also the reason the fluid comes out gray on non RSC brakes as the master body and caliper is painted, not anodized, which means the bore is raw aluminium. This gets scratched and worn a bit and thus the grey fluid - even old fluid in an RSC brake is still clear. As the plastic piston is softer than the aluminium, even though there are some wear particles, it still seals. With an...

We plumbed a pressure gauge in line with some Code RSCs back in the day. You can easily hit 3000 psi yanking on the lever. That would be hard to see on the trail of course, but pressures are definitely higher than most assume. The bigger limit when it comes to piston temp is more likely to be the seals. The max temp of EPDM isn't that high (about 300F). You could do some fluorinated material like FFKM to get higher temp ratings on your seals, but that's expensive. Brembo refers to their pistons as "isolated" aluminum. What I read...

Few years ago there was a boiling point chart at epic bleed kits website, where Magura royal blood was measured at 99C with every other fluid measured at well above 200C. They have since changed the formulation I guess, before they weren't even publishing these data at all. Anyway, even for quite steep dh tracks like schladming I wasn't getting caliper temp too hot to touch, so I would be surprised if brake with phenolic pistons or similar would be heating fluid much higher than that 100c point. Brake disc? Sure, those get very hot, pads obviously too. But there...

I don't have any data right now to say one way or another but my gut is telling me no. What I do know is that boiling temp increases pretty significantly based on the pressure that the fluid is it. I have heard engineers in the industry stating that line pressures are over 1000psi for peak braking events, that's 68X more pressure than the atmospheric pressure of 14.7 psi that the boiling point it rated at, but that's all the data that I have to go off of, I don't have extra any inline wireless pressure transducers lying around at...

Well, if they were that hot Magura brakes would be exploding left, right and central. Royal blood has boiling point of 100c or so 🤷🏻

PUSH is kidding you, this is not a normal thing and demand a replacement of the defective part.

I have not watched many of the numerous Fox Podium reviews as I try to avoid the influencer type content, but came across this from JKW and it reminded me of something I noticed when first swapping from a traditional to inverted fork; the front brake seemed to work better. Same brake, same wheel, same tire, same trails; it simply felt like there was more control and braking traction available with the inverted fork. With the overbuilt crown and large upper legs required to get the desired level of torsional stiffness comes an increased fore/aft stiffness which can be felt...

I think this is the best one yet

The "weeping" from the windows of the crown is not very common, and mostly traced to customers who pressure wash their bikes. They stopped pressure washing, and we stopped seeing a problem. As for this specific fork, it could be residue from assembly, or it could be other factors. In each case, it's a temporary factor that, if cleaned, goes away. This is something we didn't experience in testing over the years, but it is something that we have seen in a handful of customer forks. We were able to recreate it here in our test lab via several experiments...

It’s the highest so far, higher than the mavens. One thing to keep in mind is that regardless of how much heat is being transferred to the fluid, hydraulic fluid, like dot or petroleum based mineral fluid, those fluids have some of the lowest thermal conductivity of any component in the brake system. It’s an order of magnitude lower than that of SS or AL. It’s going to take more BTU’s than one would ever be able generate in a mtb brake system to get any fluid to boil, especially under pressure, when the brake are applied. I can’t remember...

The main issue is, regardless of the performance, if they price them at 1k other than to fanboys they’ll be hard to sell, the ugliness is unreal for the brand, compare them to Hope/Intend/Trickstuff and others in the price range, these are in the same aesthetic level of TRPs at best

Funny how it always seems to be an user issue/different vendor issue with Push if there is something unsual with their product. I get some Steve Jobs "you are holding it wrong" vibes from that...

I think that kind of format would be great for Rampage, where weather determines whether or not the event can actually happen. It might even make a bit of sense for Hardline, where wind and rain could be the difference between making or coming up short on a 90ft jump. For UCI DH, I think they've shown they are willing and able to ride in unrideable (for us) conditions. Weather and changing track conditions are the nature of the game.

The PUSH Industries Nine.One Specifications 150mm-170mm travel (10mm steps), 36mm stanchions, bushing overlap 145mm, coil sprung, 15mm floating axle, pneumatic bottom out control, weight 2960g, Chassis The 9.1 crown is large with massive overlap on the 44.5mm aluminum upper legs which are bonded in. Specialized developed a fully bonded alloy crown/stanchion system for the E160 fork around 2010 while I was a member of the engineering group. It is a great alternative to the traditional press fit assembly method for a fork CSU, and in some ways superior. The moto inspiration for the 9.1 design is apparent, the fork lugs...