I have used tubeless MTB and 650B tires with sealant, and tubular cyclocross tires with sealant. My impression is that tubular cyclocross tires with sealant are more resistant to pinprick-style punctures compared to sealant-less tubulars, but are nowhere near as flatproof as true tubeless tires. In my experience, once a cyclocross tubular has a legitimate puncture (not some tiny leak), no amount of additional Stan's sealant or Vittoria Pit Stop latex foam will revive it.
The key variable regarding sealant performance is tube vs. no tube, not high vs. low pressure. Once a thin-walled inner tube suffers a significant puncture or laceration, the sealant can't repair the defect. In contrast, punctures in a relatively thick-walled tubeless tire can be plugged by the latex particles in the sealant before a flat ensues. That is my theory, anyway. By all means, give it a try, but if you are currently getting 2-3 flats per week on standard tubed clincher tires I would be surprised if you can go 2 weeks without a flat with tubulars plus sealant. And remember, while you can repair a punctured clincher inner tube at the road side in a few minutes, repairing a punctured tubular is a major ordeal. - David G in SF On Tue, Dec 18, 2012 at 2:29 PM, PATRICK MOORE <bertin...@gmail.com> wrote: > Jim -- I guess that your implicit point remains (so all chime in): > that sealants in low pressure tires might work much better than same > sealants in HP tires. OTOH, the scuttlebutt/googlebutt I've read leads > me to think that these sealants might work well in HP tubs, too. I > solicit comments from tub riders. > > On Tue, Dec 18, 2012 at 3:27 PM, PATRICK MOORE <bertin...@gmail.com> > wrote: > > Thanks. But really, no terminological inexactitude at all; I've read > > about using Stans (and other new-tech sealants) in Tubs (tubulars, sew > > ups) with good results. > > > > Also, I have no desire to run anything bigger than say 28 on this Ram, > > at least according to my current programming. I've got Fat on the > > Fargo. > > > > There was a thread on the CR list recently about sub $50 tubs that > > were (per the posters) decent. My idea is to find a CL or eB or swap > > meet tub wheelset, spend $150 on 3 Thailand tubs and $10 on Stans, and > > give it a whirl. Note that my 650CX23 Michelin Pro Races puncture no > > more than my Kojaks, at least on the roads I generally ride them; no > > more than 2-3 flats a week over the three bikes, which is not to bad > > by my frames of reference. > > > > On Tue, Dec 18, 2012 at 3:11 PM, Jim Mather <mather...@gmail.com> wrote: > >> You are confusing the terminology: Stan's is tubeless, not tubular. > >> Tubular, aka sew-ups, are a tire sewn around a tube. > >> > >> Stan's has road tubular, but it's expensive and tire choice is > >> limited. It is intended for racers who will run high psi. You can read > >> about it here: http://www.notubes.com/Road-Tubeless-C78.aspx > >> > >> If you're setting up a fairly fat tire with with lower pressures, you > >> have more flexibility. For example, a Big Apple would probably make a > >> great tubeless set up, but a Ram won't fit that. Run a 40mm tire at > >> less than 60 psi, and it might work but I don't know for sure. But to > >> run a 40 on a Ram, I imagine you need to do the 650B conversion. > >> > >> jim m > >> wc ca > >> > >> On Tue, Dec 18, 2012 at 2:01 PM, PATRICK MOORE <bertin...@gmail.com> > wrote: > >>> I'm getting mixed signals on this -- partly scuttlebutt, partly via > >>> Google. If Stans can work off road, why not on road? > >>> > >>> In any event, if I do try tubs, it will be on the cheap with a > >>> scavenged or at least used wheelset. > >>> > >>> On Tue, Dec 18, 2012 at 1:01 PM, David Yu Greenblatt > >>> <david.yu.greenbl...@gmail.com> wrote: > >>>> Patrick, > >>>> > >>>> As you live in goathead country trying to run tubular tires (which, > as you > >>>> know, have tubes) with or without Stan's sealant may be an expensive > and > >>>> frustrating experiment. > >>>> > >>>> I am curious about how tubeless Hetres (with Stan's) would perform in > your > >>>> area. > >>>> > >>>> - David G in SF > >>>> > >>>> > >>>> On Tue, Dec 18, 2012 at 10:34 AM, PATRICK MOORE <bertin...@gmail.com> > wrote: > >>>>> > >>>>> <snip> > >>>>> > >>>>> > >>>>> Am still debating whether I want to try tubulars (with Stans). > >>>>> > >>>>> <snip> > >>>> > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
