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SteveClimber Liked a reply to forum topic MTB Tech Rumors and Innovation

2/27/2025 8:25am
But using lube is already wrong. If your going to spend money on that may as well just go straight to immersive wax. 2nd best is liquid wax application (i.e squirt)
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Eoin Liked a reply to forum topic Bypass tubes on mountain bike shocks or forks? (Trophy truck tech)

1/22/2025 1:16pm
Obviously, I know what a hydraulic inerter is... But maybe you could explain it to sspomer here and I'll review? On the more serious note, is the RS touchdown tech purely for feel? I can't imagine unweighted bike damping bypass plays much of a role in suspension performance.
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More whoop related content that I think gives a good perspective on how big the whoops actually are. From down low they can get visually ironed out a little. The vast majority of these trucks are on 40" tires. Some of the whoops are about that tall. The other crazy thing is the amount of stress it puts on the drive trail going from fully loaded to no load over and over again. Plus there's the additional stress from your front or rear wheels touching down and not being at the same speed as the wheels on the other end.
This forum topic has 49 replies.
Touchdown is a very simplified form of a bypass. Instead of flowing through a tunable port, the ID of the shock body flares outward for the top 10% of travel so that oil can flow around the piston. With bypasses as seen on trucks, each bypass acts more like a position specific HSC. External bypasses are as seen above. On Fox internal bypass shocks they have an inner and outer shock body so that oil can be routed through the area between them. The oil flow on those shocks is controlled by a sort of finger shaped shim stack. Trucks...
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Not familiar with the internals of that Foes shock, but internal bypasses are common and have the same end goal minus adjustability. But generally anyone who's hitting things hard runs a coilover plus external bypass at each corner so I don't think there really are internal bypasses with the same level of capability. This is how Fox does internal bypasses: King does them like this:
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So the really neat thing about the spring-mass-damper system is that it is relatively analogous to an electrical circuit, known as the Mobility Analogy. The classical thinking is that mass acts as capacitance, dampers act as a resistor, and the spring and compliance acts as an inductor. And with those, velocity becomes the voltage and the current is the force...
Long time listener, first time caller here. These by-pass tubes are a version of position sensitive dampers. In the race car world in series where these can exist, they are a great sounding concept that can be made difficult if you try to use them for super precise applications. Knowing exactly what ride height you encounter the condition you want...