Mike, I can say without question that it is my Tech Delux that moves around under torque loads. I have the same RM013 bars on bikes with both different styles of stems. On my Rawland with the threadless setup you can feel the spring in the drops rotating primarily around the about the same axis as the bar tops. But on the Roado I have flex in the stem along the front to back axis of the stem extension before the bars start to give. Enough that you can see it moving around on steep climbs. I have been looking for an economical (read deal on Ebay) welded or lugged stem to compare, but most are either really short on extension, beat up or $$$$
Rob - http://oceanaircycles.com/ On May 6, 7:13 am, Michael_S <mikeybi...@rocketmail.com> wrote: > Is he he sure it's the stem that's moving? Based on the forces that > are applied rididng out of the saddle and the different cross > sectional areas, I would think that the bar is what's moving the most. > Both move some amount. I've never usd the taller Nitto Technomic stems > ( if that's what your son has) but on the Pearl model I've never felt > stem flex and I'm also larger than your son. > > ~mike > > On May 6, 6:24 am, "Bill M." <bmenn...@comcast.net> wrote: > > > > > Back in 1991 I bought a Cannondale (very stiff frame) that came with a > > standard quill stem. I swapped it out for a hollow, welded stem that > > had a much larger diameter extension. The first time I stood up and > > cranked the bike up a short steep rise I was astonished at how much > > stiffer the front end of the bike felt. The quill stem was allowing > > the bars to twist, the new one wasn't. > > > That may or may not be seen as a good thing, but I have no doubt that > > typical threadless stems are stiffer in torsion than traditional quill > > stems. > > > Bill > > > On May 6, 3:58 am, MichaelH <mhech...@gmail.com> wrote: > > > > The new RR contains an article by GP outlining his believes about > > > various aspects of bike strength, comfort, weight, and comfort. > > > There wasn't much new there for anyone who has followed him for a few > > > years, including why he prefers threaded headsets and stems, but it > > > did trigger this question from me. > > > > My son, who is 39 years old and a very muscular 170 lbs claims that > > > he experiences stem flex while climbing with a traditional quill > > > stem. I am always disinclined to challenge people's subjective > > > experience but I have never experienced this and suspect it is in his > > > imagination. > > > > Has anyone here felt their stem flex and has anyone ever broken a > > > stem? > > > > michael- Hide quoted text - > > > - Show quoted text -- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
