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 - -- 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.
