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  • #16
    Originally posted by Bradford View Post
    Very cool. I hadn't seen these before. I had a similar configuration with the Presta valves on my mountain bikes (fully threaded stem with a nut), but not for anything with a Schraeder. I can think of a number of occasions where this would have been really useful, including just yesterday.
    I know... try adding a few pounds when you're only running 10 or 12 lbs to start with. Oops, there goes the valve stem inside the wheel! LOL
    "I'm a unicyclist. I make my own reality."

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    • #17
      Ok I got the tube on the wheel and the tire back on. Holy cow was that hard to get the tire back on my friend and I felt like we were wrestling a alligator.
      Anyways it has been 2 days of riding and no problems with running a 29" in the 36". I did notice that it made the tire a little skinnier but no problem for right now. I might look into those fully threaded tubed because the tube did spin a little and that smaller stem kind of worries me. Thank you for all of the replies and I will keep you updated on the tube.

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      • #18
        Just go my Kent 32" tube today, to install on my 36er. It's a whole 1 pound lighter rotating weight which should definitely be noticeable!
        The install was very easy after lubing rim and tube with teflon powder. Checked bead before inflating and no indication of tube under bead. Hopefully it will hold up and not blowout while riding!
        Happy Birthday Terry! Every year you get cooler, younger and unicyclier!
        Be our muniprohpet for many years more.
        -Dani Buron


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        • #19
          I've been wanting to try a 29er tube since my FOSS tube experience went down the pan. I have a place where I get SUPER cheap Schwalbe 29er tubes, so purely for that reason the idea interests me

          What's the preparation like? Just put the tube on the rim, THEN put the tyre on, THEN inflate? Is there anything weird I need to do?

          And what's the situation like when you pop one, can you still patch it, or is it done for?

          Is it good enough to carry a spare 29er tube, or would I be better to carry a 36er tube as a spare?
          “It is well known that a vital ingredient of success is not knowing that what you're attempting can't be done. A person ignorant of the possibility of failure can be a half-brick in the path of the bicycle of history.”

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          • #20
            Originally posted by Piece Maker View Post
            I've been wanting to try a 29er tube since my FOSS tube experience went down the pan. I have a place where I get SUPER cheap Schwalbe 29er tubes, so purely for that reason the idea interests me

            What's the preparation like? Just put the tube on the rim, THEN put the tyre on, THEN inflate? Is there anything weird I need to do?

            And what's the situation like when you pop one, can you still patch it, or is it done for?

            Is it good enough to carry a spare 29er tube, or would I be better to carry a 36er tube as a spare?
            Why not go with a 32? You still save a whole pound and it's way easier to install than a 29er tube, and likely much less risk of blowout or getting the tube pinched under the bead.
            Last edited by MuniAddict; 2016-10-31, 10:48 PM.
            Happy Birthday Terry! Every year you get cooler, younger and unicyclier!
            Be our muniprohpet for many years more.
            -Dani Buron


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            Videos
            Facebook

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            • #21
              Originally posted by MuniAddict View Post
              Why not go with a 32? You still save a whole pound and it's way easier to install than a 29er tube, and likely much less risk of blowout or getting the tube pinched under the bead.
              UDC UK don't seem to sell the 32", and so by the time I get one shipped from somewhere else I might as well just pay for a 36er one

              I don't really like the idea of having to order inner tubes from another country, as I use my 36er daily as a commuting machine so need it to have 100% uptime!
              “It is well known that a vital ingredient of success is not knowing that what you're attempting can't be done. A person ignorant of the possibility of failure can be a half-brick in the path of the bicycle of history.”

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              • #22
                Originally posted by Piece Maker View Post
                I've been wanting to try a 29er tube since my FOSS tube experience went down the pan. I have a place where I get SUPER cheap Schwalbe 29er tubes, so purely for that reason the idea interests me

                What's the preparation like? Just put the tube on the rim, THEN put the tyre on, THEN inflate? Is there anything weird I need to do?

                And what's the situation like when you pop one, can you still patch it, or is it done for?

                Is it good enough to carry a spare 29er tube, or would I be better to carry a 36er tube as a spare?
                You will want to inflate the tube just a little bit before putting the tyre on to be able to get it out of the way for the bead. I have patched a 29 tube in a 36er a few times. The patches look a bit funny when the tube is deflated as they don't "unstretch" as much as the tube, but I never had one let go. I trust a patched 29er tube over a patched FOSS tube.

                I normally just have a patch kit but if you are going on a trek carrying a 29" tube should be just fine. In a situation like that you should practice with all the gear you bring along though just to make sure everything works when you need it and you aren't carrying any dead weight.
                My friends, love is better than anger. Hope is better than fear. Optimism is better than despair. So let us be loving, hopeful and optimistic. And we’ll change the world. - Jack Layton

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                • #23
                  I like the FOSS tube option because it's light and easy to fit, but I must admit than when I got a flat even when I patched the crap out of it (up to 5 or 6 patches around the hole) it still leaked.
                  + it's expensive and deflates between the rides, which is not a real issue if you don't do extremely long rides.

                  The 29er solution: my only attempts leaded to killing a tube.
                  I don't imagine myself trying to fix a flat during a ride with a spare 29er tube.
                  If one manages to install a 29er tube before the ride I suggest to carry a real 36er tube (FOSS or not) as a spare tube.

                  The 32er tube could be a good in between solution, but will it last?
                  - Geared kh36 + Nightrider Lite + Kh Tbar + HS33
                  - Qu-ax 36" + nightrider +Q-handle+ cable rim brake
                  - kh 29" + knard 29x3+ kh Tbar + HS33
                  - Qu-ax trial 19"
                  -24"&26" wheels and forks and spare stuffs.

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                  • #24
                    Nimbus Oracle 32" tube is a Foss and I don't like Foss tubes (expensive, no easy to repair, to easy to get, leakages, ...)
                    So on my Oracle 32", I'm using same tube as on my 36" : Michelin Butyl 700 35-47 : 175g (original 32" Foss is 225g)
                    http://monocycle.info
                    http://www.leblogdumonocycle.fr/
                    CITY XTP 26", MUNI KH26" & KH29", ROAD Oracle 32" and KH36"
                    my goal : a 3 geared 29" to have only one uni for all kind of rides :-)

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                    • #25
                      It stretches easily to 36"?
                      The weight gain is impressive, even over a Foss!

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                      • #26
                        Originally posted by pierrox View Post
                        It stretches easily to 36"?
                        The weight gain is impressive, even over a Foss!
                        Yes, Michelin tube is fine and gets longer when you inflate it.
                        I'm using talc to help the fitting on a Nimbus Nigthrider2 rim (42mm) which is much easier to fit such tube thanks to the deaper profile
                        http://monocycle.info
                        http://www.leblogdumonocycle.fr/
                        CITY XTP 26", MUNI KH26" & KH29", ROAD Oracle 32" and KH36"
                        my goal : a 3 geared 29" to have only one uni for all kind of rides :-)

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                        • #27
                          I've been running a Foss tube for a couple of months and it seems fine. I don't know why people seem to have problems with them. I'm usually aiming for 410kPa pressure (~60PSI).
                          Last edited by kamikaze; 2016-11-04, 09:30 AM.

                          Join Unicyclemap.com!
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                          [ Karlsruhe/Germany - kamikaze@bsdforen.de ]
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                          onewheeldave: deep in my heart I feel that unicycling was born of heroes and atheletes, not clowns and entertainers

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                          • #28
                            Originally posted by kamikaze View Post
                            I don't know why people seem to have problems with them.
                            I have one on my 20", one on my 29" and one on my 36". I run the 36" at 3bar (roughly 45psi) and I have to put air in it every couple of weeks. The 20" runs at 50 and it needs air every week. I don't use the 29" much these days, and each time, it's flat.

                            My 24" runs on a regular tube. I never put air in there, unless I decide to. I check it regularly, and it never looses anything. Ok, it runs lower, at 20psi.

                            I don't think people have a problem putting air/lots of air in their Foss tubes, it's just that it doesn't stay inside for very long.

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                            • #29
                              Originally posted by pierrox View Post
                              I have one on my 20", one on my 29" and one on my 36". I run the 36" at 3bar (roughly 45psi) and I have to put air in it every couple of weeks. The 20" runs at 50 and it needs air every week. I don't use the 29" much these days, and each time, it's flat.

                              My 24" runs on a regular tube. I never put air in there, unless I decide to. I check it regularly, and it never looses anything. Ok, it runs lower, at 20psi.

                              I don't think people have a problem putting air/lots of air in their Foss tubes, it's just that it doesn't stay inside for very long.
                              And the stretched tubes don't loose air? My 36" Foss seems to loose about 50kPa (~7PSI) per week.

                              Join Unicyclemap.com!
                              ----
                              [ Karlsruhe/Germany - kamikaze@bsdforen.de ]
                              ----
                              onewheeldave: deep in my heart I feel that unicycling was born of heroes and atheletes, not clowns and entertainers

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                              • #30
                                When stretching a 29er tube to 36" i think it's essential to use enough (really much!) talcum powder to reduce friction and wear between tire and tube. This may prevent many flats.
                                When using cheap tubes that don't hold air well, you can add a little tire sealant (notubes!) into the tube which seals the micro leaks. That would still be lighter than running a bigger tube.
                                Einradfahren in Sachsen:
                                einradsachsen.com
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                                07.06.2020: Europamarathon

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