rec.sport.unicycling · Public discussion

36" Tire BLOWOUT while riding.

Started by thayr · · Last activity · 31 posts · 349 views

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rec.sport.unicycling
Published
14 February 2007
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23 February 2007
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thayr
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  1. I was just reading a thread about tires blowing, well mine popped while
    I was riding. I had just used a bike shops air hose and when I got on I
    knew there was too much pressure... I was just about to stop and let
    some air out when POP! To any bystanders it probably appeared to be
    some kind of assassination, as there was a loud BANG and then I hit the
    ground.

    That was my first UPD off my new Nimbus, I did a nice tuck and roll and
    came out of it with a scrape on my arm. I'm not sure of my speed, I
    wasn't pushing hard but I was going pretty fast.

    I'm looking now at UDC's 'Commuter 36-inch tube' for $38, anyone know
    if there's a better price? I also remember reading about people putting
    a 29" tube in their 36", can someone shed some light on that? I've got
    the airfoil double-walled rim.

    --
    thayr
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  2. Chris.James said:

    which tire do you have? the TA i hope? the coker will blow off the rim
    way too easily.

    TA road tire. (UDC says: Coker tire will not fit on the current Airfoil
    rims in stock)

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    thayr
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  3. Bedford unicycles sells 36" tubes for $35CAD, or $30USD. I'm sure if you
    order 3, he will sell the third half price. Ask for small packaging
    shipping: it is a fraction of normal postage.

    --
    Danni

    leo said:

    Without cocks you wouldn't even have a family forum.

    '*Ha Ha haaaaa*' (

    )'!'
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  4. peole say 29" tubes fit, try it ....

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  5. Looks like Coker still sells the tubes for $15.50.

    http://tinyurl.com/2lvjbs

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    Danny Allen
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  6. Ah, Danny Allen beat me to it.
    http://tinyurl.com/2avk9x

    --
    Spencer Hochberg

    'BC wheel movie.'
    (http://www.unicyclist.com/forums/showthread.php?t=56195) Watch
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  7. Ouch! Looks like people are going to have to be careful with the
    Airfoil X and the TA tire combo. Was the tire damaged at all in the
    blowout? Any idea what pressure was in the tire?

    I don't know why the Coker tubes are $38 now at UDC. 'Coker Tire'
    (http://tinyurl.com/2sknr4) has the 36" tube in their catalog for
    $15.50. They were out of stock at one time, I'd call or write to find
    out if they have stock before ordering.

    The other option is the 29er tube. 'LiveWire Unicycles'
    (http://tinyurl.com/cpdjd) has a guide on how to install a 29er tube.
    The Schwalbe AV-19 tube will work. You can order the tubes directly
    from the 'Schwalbe web site'
    (http://schwalbetires.com/bike_tires/tubes). Last time I ordered they
    had a minimum order of $15 so you would need to order three or more
    tubes. Or you can have your LBS order the tubes.

    You're going to want at least three of the 29er tubes anyways so you'll
    have a spare. You'll probably pop one trying to get it installed.
    After that you'll get the hang of it. You can't really patch a 29er
    tube because the patched area of the tube won't stretch. So once a
    tube gets a pinch or other puncture you end up throwing the tube away
    (or patching it and using it on a real 29er instead of the Coker).

    The 29er tube works but is more fussy and less reliable than the thick
    Coker tube. I used 29er tubes for a while. Then I got a puncture flat
    due to a thorn and went through three 29er tubes installing a new tube.
    I ran out of 29er tubes and went back to the old reliable Coker tube.

    --
    john_childs

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  8. UDC told me that the TA tire will usually blow off the new airfoils if
    you go above 45psi.

    --
    boo radley

    "no really, are you sure you love me more than your unicycle?" -my gf

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  9. just make sure that the bead is always seated evenly and i shouldnt blow
    out.

    --
    GhettoSmurf

    willowglenbicycles.comindex.cfm[/URL]
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  10. boo radley said:

    UDC told me that the TA tire will usually blow off the new airfoils if
    you go above 45psi.

    I was riding it a little low, probably somewhere between 25-30. I held
    the hose on not but two seconds or so, it must have shot it up to
    45-50psi. Then about a minute later I was kissing concrete...

    I'm glad it happened on the bikepath and not on the side of the road,
    could have been worse. There's no damage to the tire itself, just the
    tube. Also some scratches on the back of the T7 handle which seems to
    have taken the brunt of the fall. I came completely off and didn't have
    a chance to catch the uni.

    --
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  11. This hasn't happened to me yet, and I run up to 50psi (he says, knocking
    on Ti).

    I also hope it doesn't happen to Tom B., because that would further
    validate his slouching-toward-incompetence theory.

    EDIT: I happen to have several airfoils purchased from a couple years
    ago to a couple months ago, and it is absolutely true that they differ
    in overall diameters as well as bead seat diameters. The newer ones
    being slightly smaller.

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  12. unisk8r said:

    I also hope it doesn't happen to Tom B., because that would further
    validate his slouching-toward-incompetence theory.

    As if it really NEEDS any further validation. 🙄 Sad but true
    their track record is well documented. They're way past slouching
    TOWARD incompetence. They've arrived, and now they're just slouching.

    --
    tomblackwood

    Tailgate at your own risk...
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  13. Is it possible to have some sort of run-flats or re-inforced 36"
    tyres/tubes. So it doesn't happen again.??

    --
    Hazmat

    1 weird and unusual greek cypriot australian 😄
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  14. Bah, does anyone know if theres going to be a new batch of larger
    airfoils in the semi-near future, say, before July? This really makes
    me reluctant to get an airfoil 36er for this spring.

    --
    Brian O.

    'ProjectUNI' (http://www.otherworldsociety.org/projectuni) - The
    Unicyclist PC Game - In Early Development.
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  15. Brian O. said:

    Bah, does anyone know if theres going to be a new batch of larger
    airfoils in the semi-near future, say, before July? This really makes
    me reluctant to get an airfoil 36er for this spring.

    You're suggesting the rim is at fault, it might be but thayr was
    running it with a high pressure, suggested tire pressure is 32PSI even
    though no one actually pays attention to what the tire says and goes
    for 35-40PSI, I havn't had a flat or anyhing on my coker, I wouldn't
    suggest using a 29" tube, I have no experience with them myself but I
    can't see them being much good.

    --
    DustinSchaap

    FOUNDER OF EENWIEL.NL (\"HTTP://WWW.EENWIEL.NL\"😉
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  16. DustinSchaap said:

    You're suggesting the rim is at fault, it might be but thayr was running
    it with a high pressure, suggested tire pressure is 32PSI even though
    no one actually pays attention to what the tire says and goes for
    35-40PSI, I havn't had a flat or anyhing on my coker, I wouldn't
    suggest using a 29" tube, I have no experience with them myself but I
    can't see them being much good.

    This coming from you Dustin??
    First, the recommended max. pressure on tires doesn't mean much, in
    light of rims, usage, and other factors. Lotsa folks run higher than
    32 with no ill effects, and all the benefits of lower rolling
    resistance. Where the practical upper pressure limit is, however,
    remains to be seen.
    Second, while JC may not have had a good experience with 700c tubes, I
    have. Not once have I had a problem with them. No flats, no leaks, no
    blowouts. And I find the lower weight tube helps reduce the overall
    rolling mass esp. at the outside of the wheel. There is "much good" to
    them, and you should try one for yourself sometime. But like any other
    piece of equipment, there are good brands and not-so-good ones.

    The existing 36" wheel equipment still leaves alot to be desired.
    Pete

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  17. DustinSchaap said:

    You're suggesting the rim is at fault, it might be but thayr was running
    it with a high pressure, suggested tire pressure is 32PSI even though
    no one actually pays attention to what the tire says and goes for
    35-40PSI

    Yeah, but not allowing high pressures is a real problem. Running the
    coker at 50psi makes it a really nice smooth ride. I hate running it
    lower. We all know it says 32PSI on the tyre, but we also all know we
    ignore that and it works fine on normal rims.

    Brian - if you're not sure, then just buy the stock coker rim, the
    stock coker rim fits the tyres, and is fine at high pressures. You can
    always upgrade the rim later when/if a new good rim comes out. Unless
    you're super-fat or take it down 6 foot drops it should last okay, mine
    has several thousand miles on it and is okay.

    Joe

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  18. I wasn't saying that having a high tire pressure is a bad thing, mine is
    over 32PSI too I'm afraid, you can feel the tire is hard but it doesn't
    feel overly pumped or anything. If you get on your unicycle and notice
    the wheel feels very strange and hard then obviously there is WAY too
    much air in it or you're used to running your tire near to flat, if you
    run a tube near to exploding then I don't find it too weird it would
    blow out.

    Pete, I will be trying a 29" tube sometime and will post what I think,
    a light unicycle is very nice for road riding even though once a heavy
    wheel is going it will keep going. I havn't decided yet.

    --
    DustinSchaap

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  19. Good to hear, Dustin...let us know if you feel any difference.

    The fact remains that UDC's airfoil rim supplier has slightly reduced
    the diameter of these rims. Whatever the reason, it is unacceptable.
    You never heard about tires blowing off the old rims. This issue of
    tire fit is EASILY correctable. But UDC has been overly-protective of
    the identity of the airfoil manufacturer.

    --
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  20. unisk8r said:


    The fact remains that UDC's airfoil rim supplier has slightly reduced
    the diameter of these rims. Whatever the reason, it is unacceptable.
    You never heard about tires blowing off the old rims. This issue of
    tire fit is EASILY correctable. But UDC has been overly-protective of
    the identity of the airfoil manufacturer.

    I think this is because currently, there is one manufacturer in the
    world who is able and willing to make 36" rims. Until they find an
    alternative supplier for rims, they probably don't want to [censored] the
    only current supplier. The current situation is a problem for riders
    round the world anyway, as the non-US unicycle.coms have to pay a
    fortune for their airfoil rims, because they can't just come in the
    containers with all the other unicycle stuff that comes direct from
    Taiwan.

    The hassle if they did lose the airfoil makers is that even if they
    find a replacement maker, these things take time to set-up. The current
    KH hub took *years* to get sorted.

    Anyway, lets just hope they can find someone in Taiwan or wherever who
    can make an aluminium rim, then we'd finally have the chance to buy an
    almost completely unicyclist designed 36" unicycle.

    Joe

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