Ryan: That's interesting information. I have to confess that, when I suggested 3" 650B, my suggestion was not based on personal experience, just extrapolation from such experience as I've had in comparing 60-65 mm tires in the 559 and 622 sizes (again, the taller ones work better in sand than the shorter ones with same tires and pressures; and that, in fact, the bigger tires seem to smooth out washboard and such roughness at a higher pressure as the smaller tires at lower pressures; say, 21-23 psi 622 X 60 feels like 16-18 psi 559 X 60).
My comment was based on the thought that, if a 29" X 60mm tire (ie, 622X60 - ~750 mm diameter) works well, than a 29" X 80mm tire (ie, 584 X 80 = ~750 mm diameter) might do even better in soft and bumpy conditions, pressures adjusted appropriately. But apparently there are other matters to consider. Related tangent: Once again, I find that sand in the 1" to 3" range is quite rideable with 622 X 60s at sub 20 psi. Now, this means longer stretches of 1" and shorter stretches of 3", because 3" requires work and gearing down; it's the depth limit for such wheels, at least for my strength and my tolerance for work. But I daresay that 584 X 80 at sub 15 would handle 3" sand better -- am I right? More than 3", or with more than several hundred feet of 3" sand, I get off and walk with my wheels, but I wonder if 584 X 80 would handle this better. For the record, the Matthews will (I think) take 584 X 80; at least, it will take 584 X 75. On Mon, Jun 18, 2018 at 11:07 AM, Ryan M. <ryan.merrill.cycl...@gmail.com> wrote: > You aren't specifically asking about dedicated mtb fatbikes, but I've > ridden a fat bike in snow, sand, and dirt and can say that the rolling > resistance is enough to take notice; the plus size (3" is still an issue > but not as bad). I honestly did not like it, and did not like the way the > bike decided to turn when it dang well wanted. I really didn't like riding > the fat bike on twisty single track as the bike just behaved weirdly and it > was something I was not used to. It seemed to just not want to turn when I > wanted it to and then moments later it would. Odd. Plus, exact tire > pressure was hugely important. The bikes definitely have their following > though, but they aren't for me. > > On my mtbs I usually run 2.3 or 2.4 (29'ers) on the fronts and 2.2s on the > rear and the combination works great on the single track I ride and the > gravel roads around me. > > On Saturday, June 16, 2018 at 1:53:28 PM UTC-5, Patrick Moore wrote: > >> My personal suggestion for any new Rivendell mountain bike is that it >> accommodate 3" wide 650B tires, or at least, 3" wide 26" (559) tires. Or, >> that it be built for 65 mm 700C tires. Fat and tall really does make a >> difference on soft surfaces, and on high-frequency, low-amplitude bumps (at >> least, if you keep the tire at appropriately low pressures). 2 inches just >> isn't fat enough. >> >> Aside: Curious: has anyone here had the opportunity to personally compare >> 584 X 70 with 622 X 60 in sand? >> > -- > 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. > -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ Patrick Moore Alburquerque, New Mexico, Etats Unis d'Amerique ************************************************************************** ************** *Auditis an me ludit amabilis insania?* -- 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.
