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

6/15/2023 11:01am
Spotted in Vital's Pit Bits. Looks like the Pivot uses an eccentric mounting between the seatstay and rocker? Guess it's just a way of fine tuning BB height, head angle etc.
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TEAMROBOT Liked a reply to forum topic MTB Tech Rumors and Innovation

6/13/2023 1:25pm
Re: Loris and Pirelli, remember that the Pirelli deal is with ALL Trek factory racing riders, which includes DH, Enduro, XC, road, and maybe even CX. This is a big big team deal and, despite being the top dog on the DH team, Loris is small potatoes compared to all the other Trek athletes who have no reason to not run the tires. Re: flex stays, some of the old Felt carbon equilink bikes had flexstays that were neutral at sag. I raced the Virtue Nine with flex stays in 2014. The bike rode fine for me so I don't...
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Primoz Liked a reply to forum topic MTB Tech Rumors and Innovation

6/13/2023 1:18pm
Based on the rough diagram @RonJon made the change in angle between the stays is 0,3°, but I think that is valid only for extreme travel positions? How does it change through the travel? In any case, I think it would make sense to optimise the resting position in such a way that you have the least amount of flex in either direction to lover the overall stresses on the parts through the lifetime (thus lengthening the lifetime). It's usually the cycling of the load that does the structures in, not the absolute highest load, so optimising it for sag...
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w4s Liked a reply to forum topic MTB Tech Rumors and Innovation

6/12/2023 1:25pm
doesnt the stumpjumper use a digressive damper tune to account for the spring rate of the flex stays?
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paddydigital Added a reply to MTB Tech Rumors and Innovation

6/12/2023 1:00pm
All this flex stay talk has me thinking about the tuning opportunities of flex stays. If the rear end is flexing as it moves through the travel range, then the rear end will behave like a spring.* This means a bike with flex stays will have an inherent spring rate, even without a rear shock attached. That is really funky...

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

6/8/2023 3:42pm
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paddydigital Added a reply to MTB Tech Rumors and Innovation

6/8/2023 3:18pm
the 3 bolts on the demo bb area might be a bit of a red herring when it comes to pivot locations. between the shock link passing through the downtube, the tunnel in the seattube, and the frame cover bolts, it appears that the bb area is made up of two parallel vertical plates, similar to trinity MTB's bikes. if...