I agree that 531C is/was on the stouter end of the roadie spectrum. That's what they used on the Trek 720 in the early 80s
<http://images.craigslist.org/00w0w_dMJDk5VEpEb_600x450.jpg> On Thursday, June 19, 2014 3:43:27 PM UTC-7, Steve Palincsar wrote: > > On 06/19/2014 06:26 PM, Michael wrote: > > So, according to the chart, "531 Competition" had the lightest tubing >> walls of all the 531 tubesets. > > > > > That's true. However, the chart we're speaking of didn't list all the > varieties of 531 there ever were. I recall seeing a photo of a French > constructeur bike, something made for the Technical Trials, pretty sure it > too was 531, and that had tubing with .3mm wall thickness between the > butts. Here's what's listed in the Wikipedia article: > > > - *531 <http://en.wikipedia.org/wiki/Reynolds_531>* - > Manganese/Molybdenum. UTS: 700-900 MPa (48-58 Tsi, 100-130 ksi > <http://en.wikipedia.org/wiki/Pounds_per_square_inch#ksi>) > - *531ATB* - Designed for Mountain, All terrain, Off road > - *531C* - Competition Racing tubeset. Road racing, track, time > trial and cyclo-cross. > - *531CS* - Club Sport Double butted main tubes > - *531Magnum* - Same use as ATB > - *531OS* - Oversize tubeset > - *531 Professional* - Superseded 531SL, for road racing and time > trials. Comprises 531 lightweight main tubes and 753R rear stays. Early > versions used 753T rear stays. > - *531SL* - Special lightweight (SL) tubeset, comprising 531 main > tubes drawn thinner than standard 531, and stiff 531 rear stays > - *531 Speed Stream* - 531SL Oval shaped aerodynamic tube > - *531ST* - Special Touring tubeset[6] > <http://en.wikipedia.org/wiki/Reynolds_Cycle_Technology#cite_note-6> > - *531 Super Tourist* - Superseded ST. > - *531DS* Designer select tubing, typically an oversize down tube > and seat tube for larger frames, tubing from the mtb tubeset. > > I'm pretty sure 531SL/Professional had thinner walls than 531C. As for > Designer Select, that may be "typically" what it was, but it wasn't always > that. My George Longstaff's got a 531 Designer Select decal on it, and > it's all standard diameter tubing, with thinner walls on the top tube (7/[4 > or 5]/7) than 531C and 753 stays. > -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
