I don't have any Rivs with the 6 degree top tube (other than the clem which is different because it only comes in three sizes which are thus meant to take a HUGE range of riders for each), but my gut says that 56 would indeed be too big for you. That size is directly comparable to the 61cm, 3 degree frames that René mentions, in terms of top tube length and ideal fit. It'll just have a lot more standover clearance. (For reference, I'm 6'2" with a long torso, and the 56 is the size I'd get - and I prefer bikes on the "big" side. In fact, it would be perfect because it would give me the length I need for my upper body, with the low straddle height I need for my short legs.)
Similarly, a 52cm Hillbourne might be equivalent to about a 57cm Homer or Atlantis, if they existed. Here's a link to the old geometry tables for comparison, which still have those old Sam Hillbourne sizes: https://docs.google.com/spreadsheets/d/1gfiN1kOxVrthdc6eScUF9fP5n-BvRBILbBMYiEg5LM4/edit?pref=2&pli=1#gid=0 Also, here's a thread in which Grant talks about the Hillbourne sizing conversion: https://groups.google.com/forum/#!msg/rbw-owners-bunch/_pGj9VCTu0E/JB3_bX-YOr4J On Saturday, July 2, 2016 at 11:34:49 AM UTC-6, René wrote: > > I'm 5'11", barely 1" taller, yet my saddle height is 77-78, depending on > the shoes I wear. I guess my torso is shorter comparatively, yet I have > long arms. My stock original Homer configuration from RBW had me on an 8cm > stem on Noodles, which felt too far out no matter how much I raised the > handlebars. I now use a 5 cm stem at about saddle height or slightly > higher. > > When I bought my Betty, Keven insisted I get the larger 61 or whatever > that size was, but I went with the 58 so my daughter's could also ride it. > It fits me perfectly. > > The 61 Homer and Atlantis are fine vertically, but need the shorter stems > for classic drop bars. I have a 6cm stem on the Atlantis now. Thankfully I > could find those shorter reach Nitto stems. For upright rear-reaching bars, > the sizing is perfect. > > Agree that fine tuning the sizing based on the intended configuration is > needed in many cases and default RBW sizing recommendations are for upright > riding handlebars. > > René > > On Saturday, July 2, 2016, Andrew Huston <firsttolast...@gmail.com > <javascript:>> wrote: > >> Yes. My PBH is 84. I wear a 30 inseam in pants. Saddle height measured in >> my MB6 and Jonesis 70cm. I'm gauging that my saddle height may indicate >> longer torso than legs, 5'10" btw. I'm not sure if this all adds up but >> I've measured multiple times and this is what I get. >> >> -- >> 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 https://groups.google.com/group/rbw-owners-bunch. >> For more options, visit https://groups.google.com/d/optout. >> > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
