My tubeless experience: Non-tubeless-ready Pari Moto tires on tubeless-ready Pacenti PL23 rims -- Set up easily (with compressor), but unreliable. The Pari Moto sidewalls are so thin that the sealant and air can seep through. They'd leak down to 25 psi within an hour, as I found out a couple times an hour into my ride! The tires stayed in their bead seat when deflated; the PL23 bead works well.
Non-tubeless-ready Ground Control fat tires on non-tubeless-ready stock rims -- Set up was a pain (super wide rim tape required, tedious to lay down), but relatively reliable. Stayed set and held pressure (quite low, <10 psi) for a while, but eventually leaks formed as the liquid sealant wormed its way through the seams in the tape job. The tire construction is heavier (60 tpi) and I never had sealant leak through. On Sat, Nov 7, 2015 at 9:19 PM, Patrick Moore <[email protected]> wrote: > I know that this is something to be aware of, and perhaps, in certain > circumstances, to be afraid of, but the man (older -- well, mid '30s -- > with many years of wrenching) who did my conversion took a quite > conservative approach, and I am confident that he would not have proceeded > unless the setup was safe. Said fellow refused to convert my Elk Passes > onto Sun M14A rims for this very reason -- he installed Stan's tape, > installed the EPs, pumped them up, and shoved the wheel into my hand. He > said, in effect, taka lookat this. I did; and just a wee bit of thumb > pressure broke the bead/rim wall seal and the air rushed out. The Kojak > bead/rimwall seal was much different. > > Therefore, I am confident that, as long as I maintain sufficient pressure > in the tires, I need not fear "burping" or sudden air loss due to unsealed > beads. > > If that were all involved, I'd be drunk and happy. But my anxiety extends > beyond this to niggling matters of daily maintenance: I don't want a setup > were I have to religiously monitor my air pressure. Or, I might apostasize > and accept this situation, but if I do, I'll buy a compressor. > > Anyway: What I seeks is a tubeless setup that not only is safe, but a > setup where the mechanical interaction of bead and rim wall, aided by > sealant, is sufficient to keep the bead securely in place, be the air > pressure what it may. That is, a mechanical interface that provides an > airtight seal even if the pressure in the tire is reduced to ambient > pressure. > > On Sat, Nov 7, 2015 at 8:02 PM, Steve Palincsar <[email protected]> wrote: > >> I've talked to (online, anyway) a tandem captain who had that happen. >> >> On 11/07/2015 07:07 PM, Patrick Moore wrote: >> >> O Gawd. Talk to the 2 experienced mechanics about the likelihood of that >> happening. >> >> On Sat, Nov 7, 2015 at 4:27 PM, Steve Palincsar <[email protected]> wrote: >> >>> I'm pretty sure no experienced mechanic would be in favor of having a >>> tire come entirely off the rim on a fast downhill after a puncture, or >>> would think that a good learning experience. >>> >>> On 11/07/2015 05:25 PM, Patrick Moore wrote: >>> >>> You opinion against that of 2 very experienced mechanics. >>> >>> The downside I see is rather the need to continually monitor the tire >>> pressure, as it seems to be air pressure alone, and not bead-to-wall >>> interaction, that keeps the bead where it should be. >>> >>> On Sat, Nov 7, 2015 at 3:01 PM, Steve Palincsar < <[email protected]> >>> [email protected]> wrote: >>> >>>> >>>> On 11/07/2015 04:40 PM, Patrick Moore wrote: >>>> >>>>> Interesting experience! I've built my own bikes since late 1970 -- >>>>> this after several years already of modifying bikes -- and over the years >>>>> I've very often found myself learning the very hard way. >>>>> >>>> >>>> I think in this case "learning the very hard way" would most likely >>>> involve a puncture on a fast downhill and the tire coming entirely off the >>>> rim, and I'm pretty sure you really wouldn't want to learn anything that >>>> way. >>>> >>>> >>> >> -- >> 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. >> > > > > -- > Resumes, LinkedIn profiles, bios, and letters that get interviews. > By-the-hour resume and LinkedIn coaching. > Other professional writing services. > http://www.resumespecialties.com/ > www.linkedin.com/in/patrickmooreresumespec/ > Patrick Moore > Alburquerque, Nouvelle Mexique, Vereinigte Staaten > > ************************************* > *The point which is the pivot of the norm is the motionless center of a > circumference on the rim of which all conditions, distinctions, and > individualities revolve. *Chuang Tzu > > *Stat crux dum volvitur orbis.* Carthusian motto > > > -- > 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. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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