That pic was what led to me wanting a Bombadil, but, it was later on that I got one, ended up w/ the diagastay one instead (but that's another story).
For the clearance aspect: at the time, there really weren't a lot of 650b tires... the Quasi came out while the bike was being prototyped... http://cyclofiend.com/rbw/bombadil/ The clearance you're showing on yours, is a bit more than I'm running on my Rom...: https://www.flickr.com/photos/leslie_bright/15567948324/in/album-72157623199721925/ The later Bombas ended up w/ a lot more clearance: https://www.flickr.com/photos/leslie_bright/6836831408/in/album-72157623199721925/ https://www.flickr.com/photos/leslie_bright/6835730758/in/album-72157623199721925/ (I can run 2.3 NeoMotos under fenders even.... not that I'd suggest such.... https://www.flickr.com/photos/leslie_bright/7150235995/in/album-72157623199721925/) On Monday, December 7, 2015 at 11:49:52 AM UTC-5, iamkeith wrote: > > I can't speak from direct experience related to the Bombadil, but maybe > this helps. > > From what I understand, the bike actually preceded the tires - though not > by a long timeframe. Kirk Pacenti designed the neo moto, and then the > quasi moto, directly in *response* to the Bombadil and some persuasive > conversations he'd had with Grant. So if you have a REALLY early model, I > could understand how the clearance be minimal. Since it was originally > conceived as a bike "in the spirit of a 1985 mountain bike," and since > mountain bike tires were only 1.75" wide back then, it probably made sense. > I know that later frames have increased in terms of their available > clearance. There are other images circulating of what is described as a > test model, fitted with neo motos (which you've probably seen), and it does > seem to have more clearance than yours - though its hard to tell for sure. > Perhaps this was a first revision - before they did the batch of > clearcoat frames? > > https://www.flickr.com/photos/gzahnd/2417452065/in/photostream/ > > The other theory I had doesn't seem to apply to your frame: Just like > your bike, the seat-stay bridge is also the point of least clearance on my > All-Rounder. But on mine, the builder used one that was drilled for > caliper brake mounting, even though the bike uses canti brakes. In my > case, I've assumed that it was (consciously or unconsciously) located where > needed to provide the option of switching the brake-types, based on > longest-reach brakes available at the time. But, unless I'm seeing it > wrong, yours doesn't look like it is meant for that. > > Even though it's tight, I personally would have no issues using it with > the clearance you're showing. I'd just avoid gumbo mud, which I try to do > anyway. If you're interested, I can post a picture of the modification I > recently made to my fender, to allow it to clear the stay and still let me > run an oversize tire. > > On Sunday, December 6, 2015 at 9:00:54 PM UTC-7, Chad wrote: >> >> I'm not sure if I have a odd duck here or not, but tire clearance on my >> early double top tube 650b Bombadil is really tight. With a 650b x 2.0 >> Quasi-Moto (actual width Is about 53mm on a Velocity Synergy rim), there is >> maybe 3-4mm clearance at the seat stay bridge. Enough for the tire to roll >> through but not much room for mud or rocks. I was thinking the Bombadil >> was designed to fit the quasi-Motos as there are pictures of early >> prototypes running around with this tire. I've also run the Schwalbe HS >> 315 "Fatties" (true width 47mm) and Bruce Gordon Rock n Roads (44mm), but >> it would be nice to fit at least a modern 27.5 x 2.1 MTB tire in there. >> Just wondering if anyone else here has experienced this challenge? >> https://flic.kr/p/Bsyew9 > > -- 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.
