Well Garth, if she decides she doesn't need the setback after all with those handlebarsbars, there is always the Thompson Elite straight seatpost in 26.8 x 330 in BLACK below, also listed on sale at $85.79 :-)
https://carsoncitybikeshop.com/elite-seatpost-26-8-x-330mm-black/ A bit of nostalgia for me,... I believe the (4) 1987 Schwinn Cimarron early mountain bike frames in red I've accumulated over the decades in various sizes all also use a 26.8 mm seat post. My FIRST serious bike at age 31 was a MUCH too small red 1987 Cimarron, but it was the only one Rudy's Bikeshop (retired and long gone ) in North Troy NY had in stock at the time,... AND I had money to burn! :-) With a rear rack and a nylon set of panniers, it cost about $700 with tax back in 1987! It hurt making about maybe $80 a week, but I still have that bike, and looked for larger 1987 red frames on the bay at reasonable prices,... and I also use one of those occasionally "just because" I learned a VERY important physics lesson with it. Not a week after buying it, I popped a wheelie in a parking lot and discovered that you MUST not land with the handlebars turned! I also learned I could FLY at the same time... :-) hehe Possibly the 26.8 tube size was looked at as a bit stronger for early MTB use back then, and I'm not sure if the Chromoly steel was thicker or not , but ALL have never had an issue other than lack of choice in the current and many decade long 27.2 mm diameter frame seat tube popularity. Cheers, Joe T On Sunday, October 15, 2023 at 8:45:13 AM UTC-4 Garth wrote: > What's being glossed over here in all the talk of mega-setback posts is > that Leah has expressed in the past that the only reason she resorted to > such a post was for more reach to the bars because she wasn't aware of any > other way to get the bar height equal to the Technomic 280mm quill stem(it > only comes in a max 100mm extension). As I described in an earlier post, a > combination of the Long/Tall Nitto quill adapter plus a positive ride > threadless stem can offer the same height plus more forward extension as > such stems are available up to 140mm. It's a matter of simple geometry. > > Not only does she not need to be that fat back of the bottom bracket, it > makes for a less efficient use one's inherent power. (There are some people > with proportionally long femurs who may want more set back if too far > forward, but that isn't common and isn't Leah here). I remember Leah's > Betty Foy where she had a regular setback post and the reach forward she > wanted. The Betty seat tube angle is 72d, while the Platy has an even more > shallow 71.5. That geometry difference alone accounts for about 6-7mm more > setback, relative to the center BB. She obviously doesn't need even more > setback. I also recall Leah in her riding stories how she tended to stand > while climbing. What does that do ? It places you more forward into the > "sweet spot" of utilizing the core(strongest) muscles. It's literally like > dancing on the pedals, "light on your feet" kind of feeling, where you feel > perfectly balanced over the bb where you're strongest. Here it's easy to > bend up and down and all around. Being too far back or forward you just > can't dance and you're off-center balance. Try it for yourself. That same > balancing point can be experienced while seated by moving your body forward > relative to the center BB. Where exactly that is varies for everyone, so do > experiment. > > If the proper center point and relative reach forward reach isn't > achievable on a given frame then that frame is not a good fit to begin with > no matter how pretty it may be. Having wayback bars and shallow head tube > angles on Riv's doesn't help any as you have converging seat and head > angles, the more you raise the bars the closer they get, dramatically. Bike > fitting isn't mysterious or difficult and it certainly doesn't help to just > ignore it and pretend it doesn't matter. Have some fun with it if you will > ! > > Once she gets into a better position she won't have to lament over how and > who can enlarge the seat tube as she already has a regular 26.8 post. I > can't recall if it's a Nitto or Kalloy but if it slips there are ways of > adding grip-tion to the part that slips. > > It's a nice day for a ride :) > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/dac7e733-bd14-4413-8cdb-f1371a8877f5n%40googlegroups.com.
