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The F1 comparisons don't really make any sense beyond the fact that both are the pointy end of things. Unlike on pavement, ABS does not necessarily reduce stopping distance on loose surfaces. It can actually increase stopping distance in many scenarios. I honestly believe running ABS in a DH race would be detrimental more than anything. Trophy trucks would probably...

CascadeComponents Added a reply to Kinematics

4/28/2026 3:34pm
I don't think there's anything especially remarkable about the leverage curve that would make it work better than others. When you take the curve and drop it onto other curves it doesn't look as dramatic. In regard to some comments I saw in the tech forum about link/shock angles and whether or not a curve is progressive or regressive, shock...

chriskief Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker

4/16/2026 9:17am
Especially if they did it a year ago, and used a full 65mm stroke 🤣
This forum topic has 3984 replies.
We did a spring backed IFP on the DH-R brake adjuster. It works fine so long as you keep the spring preload within reason. The main idea behind the whole brake adjuster was actually to have a base brake line pressure be about 15 psi so that the system would be less sensitive to bubbles. Not much impact on pad...
I think it goes without saying that the torsional stiffness of a fork on a whole is a function of many things. The only point was that, assuming the same material, there isn’t a magic 15 mm axle that’s stiffer than a 20 mm axle. Yes the hub adds to the torsional rigidity of the axle. If you had the...

Eae903 Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker

4/2/2026 10:49pm
Absolutely, 20mm axles are definitely the best option for stiffness, but they do put a barrier on adoption in the current bike market, and going with a 15mm steel axle, while not as light or as stiff, makes adoption a lot easier and lowers the barrier to entry. It's a problem the industry made themselves since 20mm axles have been around forever, but 15mm became the default for everything but DH bikes.
This forum topic has 3984 replies.
If adequate clamping can be achieved, the end shape of the axle end doesn’t make a difference. If you were to have a pinch clamp that couldn’t handle much torque, a non-circular end could be useful. Although in my mind that would be the time to revisit the pinch clamp design as well.
In regard to front axles and stiffness of inverted forks, the angular deflection of a shaft is defined as θ=(T*L)/(J*G). The key variables for axles are J (polar moment of inertia since we're talking about circles) and G (shear modulus of the material). J for a circular cross section is J(r1,r2)=(π*((r1^4)-(r2^4)))/2 where r1 is the OD and r2 is the...
Yeah with shifting the BB relative to front triangle pivot points (assuming no concentric BB pivot) there’s no impact on leverage curve, which is kind of nice. The change in anti-squat would be pretty hard to notice. Anti-rise I do think would be noticeably different, but there’s a pretty wide range that people are fine riding so that’s not the...

boozed Liked a reply to forum topic The Bikeconomics (Mega)Thread

3/3/2026 11:20pm
It wasn't that long ago that "15 minute cities" was the latest far right snarl word/term. It didn't hit as hard in Australia but it still comes up from time to time. I work in transport planning and the hysteria around it completely baffled me. How can anyone possibly delude themselves into believing that the idea of city planning based around safety and accessibility for all transport modes and users is some kind of grand (communist?) conspiracy? A bloke I worked with on a few projects once raised Elon Musk's ire on Twitter by calling out his nonsense. It was...
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Slavid666 Liked a reply to forum topic Nerding out on Brakes shall we? Not another tech deraliment

2/25/2026 7:11pm
Cavitation occurs when a pressure drop causes the local pressure to fall below the vapor pressure of the fluid. In the scenario you described, fluid was being aspirated by retracting a piston, which introduced a pressure drop due to flow restriction. At low actuation speeds, the flow rate was low enough that the vacuum generated could still draw the fluid through the system without issue. However, at higher actuation speeds, the pressure drop became large enough for the local pressure to fall below the fluid’s vapor pressure, releasing dissolved gases into the closed system and introducing bubbles. I’m not sure...
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