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  • Piece Maker
    replied
    Originally posted by kamikaze View Post
    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).
    Here's the thing. They're great when they work! I had one in my 36er for over a year without a single flat. Yes I had to re-inflate once a week but so what?

    When it finally did flat, I tried patching it and got nowhere. I went ahead and replaced it because it had turned a pretty gross shade of green anyway.

    The new one lasted about a week - it exploded in my tyre when I left it out in the heat. The hole wasn't that big so I tried patching it, which again got me absolutely nowhere.

    So I've since just been running a normal boring 36" black rubber tube. It weighs a tonne, but it does its job. I actually have two, just in case.

    I do pine for the lightweight feel of a FOSS, so I really do think I'll try the 29er tube at some point, but right now I'm happy enough with a normal 36er tube. I did my Manchester to Blackpool ride with it in, and it didn't flat once and I managed to get up all the hills despite the weight. So as always, train your engine harder!

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  • MuniAddict
    replied
    I sue teflon powder which is much better than talc and sticks better to both rim and tube.

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  • Eric aus Chemnitz
    replied
    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.

    Leave a comment:


  • kamikaze
    replied
    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.

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  • pierrox
    replied
    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.

    Leave a comment:


  • kamikaze
    replied
    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.

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  • bouin-bouin
    replied
    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

    Leave a comment:


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

    Leave a comment:


  • bouin-bouin
    replied
    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)

    Leave a comment:


  • UniDreamerFR
    replied
    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?

    Leave a comment:


  • saskatchewanian
    replied
    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.

    Leave a comment:


  • Piece Maker
    replied
    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!

    Leave a comment:


  • MuniAddict
    replied
    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.

    Leave a comment:


  • Piece Maker
    replied
    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?

    Leave a comment:


  • MuniAddict
    replied
    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!

    Leave a comment:

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