As a follow-up to my problematic wide tires on narrow rims postulation, I acquired some XT/Mavic A319 wheels for Rosco today, adding ~5mm of rim width over the Open Pros, and did some measuring. I just posted for informational purposes on the iBob list, though I'll share here for the few of you who might not be subscribed there:
Friends - I recently built up a Rivendell Rosco Bubbe v2 with the only 700c wheelset that I had on hand, which featured Mavic Open Pro rims. I knew for sure that these were not an appropriate rim for the Compass Snoqualmie Pass tires that I intended to run, but I assessed that I've done far dumber things than run too-wide tires on too-narrow rims and decided this dumb decision probably wouldn't result in my death... So, I'm here to report that the 700x44 Snoqualmie Pass tires measure ~39.5mm on the ~19mm external width / ~14mm internal width Open Pro rims and they fit beautifully, errr, with nary much margin for error under the SKS 45mm cream longboard fenders (see previous comment about dumb things)... I'm also here to report that I visited my LBS today, Silver Cycles in Silver Spring, MD, and they had a Shimano XT/Mavic A319 wheelset that asked to come home with me for Thanksgiving, so I obliged. The A319 measures in at ~24mm external / ~19mm internal width, and the Snoqualmie Pass tires now measure in at ~41.5mm and the 45mm longboard fenders are a bit more of a liability. Oh, in both cases, for measurement purposes, I inflated the tires to ~60psi, which is a higher pressure than I would typically run these luscious tires. -Jeff Silver Spring, MD On Sun, Oct 30, 2016 at 11:18 PM, Ray Varella <rayvarella...@gmail.com> wrote: > Back in the 80s, I ran ma-40s that Kieth Bontrager cut a rerolled down to > 26" rim diameter > I ran them on my mountain bike for 20 years and never had a problem with > tires coming off or the rims cracking. > > I still have some of the Mavic MA-2s in that size and would not hesitate > to build them up and run RTP tires. > > I'm sure there are theoretical reasons to avoid the skinny rim/fat tire > combo but in practice it doesn't concern me much. > > YMMV > Ray > Vallejo CA > > -- > 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.
