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@Jason_Schroeder What stood out to me was Dak saying that you have to work for the power on a Shimano brake when we have the reputation for having an on/off feel. One thing that's different about just about every pro bike is that they cheat out the pistons to get a super quick bite point. I don't remember specifically if the Mondraker mechanics said they were doing this but when I've polled teams in the past it was near 100%. Because the servo-wave is meant to quickly move through a lot of free stroke (relative to our super wide pad...

ah great, tech rumors turned into geo/stem length discussion again…🤣

Vital's Law: All threads eventually become bike geo threads.. Also, we have this: https://www.vitalmtb.com/forums/hub/modern-geo-talk-chainstays-stack-re…

Just remembered this. Litespeed has a draw bench they still use to custom draw their own tubing. https://www.youtube.com/watch?v=3X6wb_neCD8

The last draw benches suitable for aluminum bicycle tubing in the United States were bought by Boeing from a facility in CT(in a building built specifically to handle all the aluminum profiles and bar stock for Cannondale)in 2015 and are now being used to make replacement parts for b52 toilets. I worked with the New Haven chamber of commerce and an angel investor to re-start that facility to serve the remaining domestic 6061 frame builders for a few years, we even managed to draw a bunch of 7005 profiles for a few friends. The final aluminum Turners and Ellsworths, among...

The conclusion of this memoir points out the machine they made is not really up for industrial production capacity and they had issues with inside lubrication. They also didn't test with 6061 which is what Devinci currently use. My guess by looking at current chainsaw, troy gen5 al and e-troy lite, that are the most recent made in Chicoutimi frame, is the seat tube with the rocker axle would be the main part that is hydro formed and the battery cradle for the e-troy. The rest look to be relatively simple tubes forms that local supplier should be able to...

How is your French? https://www.collectionscanada.gc.ca/obj/thesescanada/vol2/QQLA/TC-QQLA-… DEVELOPPEMENT D'UNE MACHINE POUR L'ÉTIRAGE À FROID DE TUBES D'ALUMINIUM 6063 À ÉPAISSEUR VARIABLE A research paper between University Laval, Devinci, and Alfiniti to build custom cold draw bench for butted 6063 tubing.

OK, I'm gonna lock this thread, feel free to start another one if you feel the need...

The burden of proof is on the claimant, you are claiming flex stays are creating increased axle movement due to the extra flex, therefore you must be the one to present the data. Your exact claim is, because i said so, my ass can feel it. There are experienced engineers here telling you they haven't seen it in making real bikes. So the burden of proof rests on you to prove YOUR claim.

If we’re now moving the discussion on to braking then that’s a completely separate thing and just as we can’t lump all four bars, faux bars, flex stays, etc together; nor can we brake designs. I don’t feel attacked, that’s okay. Trolled maybe. And it’s not a funny way to say anything, it’s first hand experience. I get many queries from riders about the flex stay arrangement of my frames. Folks are rightly or wrongly concerned about flexing elements of their frame. I’m always pleased to explain that the degree of flex is so small that it’s insignificant to the...