Right, to look at an '80s stumpjumper side on, it appears to have about 0cm of drop... I'm sure it's more like ~4cm really which is more typical for 26" wheeled bikes, but combined with the fact that it has 46cm chainstays, it looks darn near zero. The angle of incidence btw chainstay/ST is certainly none too acute despite the 70deg ST angle.
Matt On Wednesday, June 19, 2013 6:48:50 PM UTC-4, Garth wrote: > > > The original Stumpjumpers had a ST angle of 70 degrees and it used > standard triple front deraillers. I never had an issue using any FD with > it. So, it's not that, but* combined *with a *deep drop BB* that Riv > prefers, now we have an issue ! > > > On Wednesday, June 19, 2013 5:37:30 PM UTC-4, Matt Beebe wrote: >> >> I remember reading in the blug or maybe RR that some Rivendell models >> might have been designed with slacker ST angles than ~72, except that there >> is a point where front derailleurs become difficult or impossible to fit, >> due to the angle of incidence between the chainstay and seattube. I >> thought that may have been the reason why the Rosco Bubbe did not have a >> front derailleur option - because the ST angle was less than 71 degrees >> or whatever that threshold is. In any case, I am pretty sure Rivs are >> designed to have as slack a seat tube angle as possible while still >> allowing their versatile/all-purpose philosophy. >> >> >> Matt >> >> >> On Wednesday, June 19, 2013 5:01:44 PM UTC-4, Patrick Moore wrote: >>> >>> This is an interesting phenomenon. I've often thought about it, since I >>> find that I need a certain amount of bend at the hips to feel comfortable >>> when pedaling, and I can't get that with a steepish standard seat tube and >>> high and close bars. I notice that Dutch city bikes and English roadsters >>> have very slack seat tube angles, steeper than the standard 71 and upward >>> range. >>> >>> I wonder what the muscular use/power output relationship is to saddle >>> setback (ie, behind crank axle) as well as of bend at the hips -- ie, if >>> you have two discrete and separate factors, namely hip behind crank axle >>> and bend at hip, and what the effect of each separately is? >>> >>> On Tue, Jun 18, 2013 at 5:17 PM, blakcloud <blakc...@gmail.com> wrote: >>> >>>> I had a similar feeling when I went from a drop bar to Alba's. I felt >>>> like I wanted to sit further back and push the pedals if that makes sense. >>>> KOPS is something I totally disregard, place your saddle where it feels >>>> comfortable. In the end I stopped using the Alba's because the position >>>> was >>>> too upright and I wanted a slightly more aggressive position. The Alba's >>>> are going on the wife's Betty Foy if it ever arrives, so they weren't a >>>> total waste. >>>> >>>> On Monday, June 17, 2013 8:08:09 PM UTC-4, Michael wrote: >>>>> >>>>> Sitting totally upright on Albas with my saddle in the ususal KOPS >>>>> position that I had with 'staches and drops, I feel like my saddle has >>>>> moved forward, but it hasn't (I checked). >>>>> Feels like I am out in front of the pedals now when pedaling - not >>>>> directly over them like I felt with the low drops position with KOPS. I >>>>> guess when you move your weight around to a different position a lot >>>>> changes. >>>>> >>>>> Nothing bad, I'll just move the saddle back if I feel the need. But >>>>> for now keeping the saddle the same as long as nothing hurts. >>>>> Just a curious thing. >>>>> >>>>> Did you feel this when you switched to totally upright after being >>>>> used to a low drops position? >>>>> >>>>> I am enjoying the bolt upright position a lot. Nice views. No >>>>> neck/hand issues either so far. I hope it will make it more comfy to wear >>>>> layers in the winter. >>>>> With drops, clothes get scrunched between my belly and thighs. Upright >>>>> really opens up the torso. Its a nice feeling. >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> -- >>>> 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-bun...@googlegroups.com. >>>> To post to this group, send email to rbw-owne...@googlegroups.com. >>>> Visit this group at http://groups.google.com/group/rbw-owners-bunch. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>>> >>>> >>> >>> >>> >>> -- >>> >>> http://resumespecialties.com/index.html >>> patric...@resumespecialties.com >>> >>> Albuquerque, NM >>> >> -- 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 post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/groups/opt_out.
