For what it's worth I usually pump my 55mm Fleecer ridges to 18psi front and maybe 22 rear. Probably bump that to 22 and 26 for very loaded touring. On a daily basis I carry more than most, a chess set and several books? Why not. I probably come in around 175-180 with clothes. My bike probably hovers at a minimum 50 lbs. On a Clem btw. Drop as low as 15 front 20 rear on unloaded MTB. Add more or ride smoother if constantly bottoming out rims I suppose.
On Thursday, March 30, 2023 at 10:18:39 AM UTC-7 Patrick Moore wrote: > Interesting, so 20 and especially 16 is on the very low side for 60s, and > very supple-wall 60s at that. > > And my teeth and arms were jarred last night out and back to church on > said horse-hooves-pitted moisture-compacted even with the tires at 16. > There are some days when one wishes to have the sand back. But 16 is > noticeably better than 20 and I'll try it at the lower pressure for a while > more. > > Really, the only setup I've ridden that smoothed out washboard was an > early CODA suspension seatpost paired with a Softride stem -- BSNYC > recently made fun of these, but I liked mine better than my 1995 top o' > line Manitou elastomer fork. The CODA/Softride combination felt like > floating above the roughness. I'm sure modern suspension does even better. > > I recall a few years ago riding with my brother on some old steep gravel > logging roads in the Jemez mountains, not in a nature reserve, heavily > washboarded. I was riding my Fargo with 700C x 60 Big Apples at 22 psi or > so. Coming back downhill I'm sure we hit 40 mph despite the washboard, > which was so severe that, very literally, my vision blurred, I had a hard > time drawing breath, and I had a hard time holding on to the hoods. > > > > On Wed, Mar 29, 2023 at 10:45 PM Patrick Moore <bert...@gmail.com> wrote: > >> I have been religiously pumping my gossamer 70C X 60 Big Ones to 20 psi >> for combined pavement and dirt, thinking that ~20 was necessary to minimize >> wallow on paved corners, but on an extended dirt ride today on usually >> sandy soil that had been extensively compacted by moisture and then chopped >> up by horses and Conservancy District trucks, 20 felt like wood rims on >> railroad ties, so I dropped both tires to ~16. That did mitigate the chop >> (tho' little really makes horse hoof divots and washboard comfortable >> except suspension) and observing carefully during cornering on pavement at >> speed I didn't notice as much wallow as I had feared. Me 170 clothed and >> shod for cool weather, bike and kit and bags and contents adding another 45 >> lb or so. >> >> So I'm curious: Those of you who use 60 mm tires: what pressure or >> pressures, and on what surfaces? And how much do you and kit weigh? >> >> Funny: I'd been riding the lightweight fixie gofast with Naches Passes at >> 39 mm (skinny rims) and 30-35 psi on the same roads and found that they >> were at least slightly smoother on the chop than the BOs at 20. The NPs are >> far less gossamer light per unit vol than the Big Ones. >> >> -- >> >> ----------------------------------------------------------------------- >> Patrick Moore >> Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum >> >> > > -- > > ----------------------------------------------------------------------- > Patrick Moore > Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum > > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/0ae8ca85-2410-456b-8f76-3cc0fc2ce223n%40googlegroups.com.
