Data point: I'm 255# and have no problems with pinch flats on 38 mm tires at 35-45 psi. That's on mostly gravel, with some rooty singletrack, a couple cyclocross races, and "sending it" over curbs and such. I do not ride lightly.
However, when I added a 20# s24o load, I raised the tire pressures to 45/55 out of caution. I say start with a higher pressure (like 45/55 f/r), and then drop it little by little til you find the sweet spot. And bring a couple spare tubes, as I'm sure you usually do. I have both Barlow Pass and Steilacoom tires to try on my bike, but they're waiting for my current Challenge Gravel Grinders (120 tpi) to wear out. Iowa gets a melt and refreeze this week, so the Compass tires may have to wait for me to try out some 45Nrth Gravdal (studded) tires first. On Fri, Jan 5, 2018 at 5:15 PM, Patrick Moore <bertin...@gmail.com> wrote: > That is interesting. I am about to, or pondering being about to (and > wincing at the infelicitous syntax of that last clause) swap out 51 mm F > Freds for labeled 2.35 Big Ones on the Matthews; which is somewhat > problematical 'cause you can't just swap 'em out when they're all tubeless > as you can when they're all tubed. The main reason for the swap is better > float on our sand, and better rolling resistance -- shoulda said "lower" > rolling resistance; but a 3d hoped for improvement is handling, given what > I've repeatedly read is the pneumatically (Huxlean sense, as in "soft, > round, and bouncing"; wincing at the possibly perceived salaciousness of it > all) round profile of the Big One, compared to the more squarish profile of > the F Fred. But if skinnier tires mean better handling on some frames -- > that's another carcase to toss into the soup (wincing at the metaphor). > > I suppose one day, one just has to man up, gird his metaphorical loins, > and just try it out hisself. Which I will do. I think. At any rate, I did > get a good deal ($100 shipped for the pair) for a non-used, non-mounted, > but previously purchased, pair of BOs. > > Anyway, good luck with Compass cyclocross tires and fixed and loads and > cold weather. > > On Fri, Jan 5, 2018 at 2:22 PM, Deacon Patrick <lamontg...@mac.com> wrote: > >> ... My best description is what I wrote in the first post: “Tracking and >> smoothness of handling is noticeably improved.” >> >> -- > 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.
