Originally Posted by
Campag4life
Let's do this Dan. Let's stop talking past one another. This is what I did for a living. Not sure what your background is but pretty clear it isn't design. Your comments are beyond simplistic and will leave you to your world view.
Bottom line, is the design is flawed and why many can't tame their particular bike after repeated visits to the bike shop. It has to do with the tolerance stack up of the assembly...the sensitivity of the design. The future shock cartridge is a slip fit into the large diameter fork steerer. A single set screw attaches the FS cartridge to the collar which creates an eccentric attachment of the cartridge within the collar as looking from above aka plan view. Further eccentricity of the cartridge within the steerer tube ID is introduced by inequivalent preload screws. This will further cock the cartridge within the fork steerer ID. Depending on any asymmetry of preloading side to side by having two preload screws which can compete in torque and further rotate the cartridge when looking from the front of the bike, the bottom of the cartridge can and WILL cock within the steering tube inducing a rattle because it is a slip fit only. One side of the fork steerer ID at the bottom of the FS cartridge contact will have more load than the other side of the cartridge which may even have slight clearance. It is little different really than an undersized seat post within a seat tube that toggles about the seat collar clamp based upon rider loading setting up a rattle. Some bikes won't rattle. This is based upon the build tolerances interacting with part variation aka mfg tolerance. Also has to do with rider loading of the handlebar.
Above is all I will say on it. There are other issues with the design but the design is prone to rattle.
Dude. No one cares for your claimed credentials you seem so eager to remind us every other post. Especially not combined with your ever present snide remarks.
Your answer is a bunch of baloney. It assumes poor build tolerances, that you dont know anyway, and someone not understanding how it works and how to adjust it, like the guy in the video you posted. Arguing this way, anything on a bike >may< not work. - If there is a stack up of anything, its a stack up of ifs and butts, thats handy if you want knock something you dont like. You post is akin to arguing bicycle hubs with QRs doesnt work or are poorly designed, because the QR load WILL compress and bend the axle. True, but none the less we have used them for the better part of 100 years. Your answer is also not in line with earlier replys. Learn something in the meantime, silently moving the goalposts, are we?
