I can attest that so far it's working fine with 170 cranks, and without putting on the 38mm tires I bought. I didn't scrape on a uturn on a narrow road while pedaling, and I would never pedal on a corner with a lot of bike lean in it. So I think it's fine so long as you're mindful of what you're doing, and clearly anyone who would convert their bike to 650b is probably very mindful of what they're doing.
A 650b conversion not something that you could just go down to your local LBS and ask them to do without getting a few blank stares. Well if they're not of the Rivendell mindset anyway ;) On Mon, Nov 25, 2013 at 9:46 AM, Jim Cloud <cloud...@aol.com> wrote: > As the site that you reference indicates, Rivendells with a 8 cm (80mm) > drop and 325mm radius tires only have a bottom bracket clearance of 9 1/2 " > - "which is very low for anything longer than probably 155mm cranks":. > > Tim's post indicates that his bike doesn't have clearance for tires larger > than 650Bx38mm, this is probably the same for my bike and most other early > Rivendell Road Standard bikes with a 80mm drop bottom bracket. In my > opinion, the success of a 650B conversion with these bikes would be > conditional on the length of the crank arms (and choice of tires). > Anything more than 170mm is probably not very advisable, and perhaps 165mm > would be a better option. The largest radius tires that will fit between > the chainstays ( approximately 38mm) would also be more practical. > > Most of the 700c conversions to 650B are bikes that had bottom bracket > drops of 65mm-70mm. Obviously, when Grant originally designed the > Waterford era Rivendell Road Standards he was biased to a lower bottom > bracket which he preferred for handling. The bikes were never envisioned > for a 650B conversion (obviously, since the French 650B tire was almost > defunct in that period). I still think a Rivendell Road Standard > conversion is possible and may provide satisfaction to the owner, but > clearance of the pedals may be an issue for care while cycling (pedaling > through a tight curve is probably not advisable). > > Jim > > > On Sunday, November 24, 2013 8:04:52 PM UTC-7, Steve Palincsar wrote: >> >> On 11/24/2013 09:12 PM, Jim Cloud wrote: >> > The early models of the Rivendell Road were designed for a 700x28c >> > tire size, I don't believe you would be able to fit a 650x42b size >> > tire between the chainstays of those particular bikes (I also own an >> > original 1996 model of the Road Standard). >> >> Don't know about a 42mm tire, but the waterford-era Riv Road is on the >> list of known-to-work conversions on the freewebs 650B site: >> http://650b.webs.com/conversions.htm<http://www.google.com/url?q=http%3A%2F%2F650b.webs.com%2Fconversions.htm&sa=D&sntz=1&usg=AFQjCNGfi1Sg4paiAMA-f6lOCQvPr7fv4w> >> >> >> -- > 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. > -- Keep the metal side up and the rubber side down! -- 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.
