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Thread: Tube Issues

  1. #1
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    Tube Issues

    I have read a ton of threads about using regular tubes in fat bikes. So I picked up some 26x2.5 tubes and tried installing them. It was difficult to get the tires to seat, so I took a look inside and found the tube wasnt inflating evenly.

    Is this an issue? I ended up reinstalling the stock (very heavy) tubes for now.

    Here is what the tube did:

    Tube Issues-1ea4867e-e429-4965-9fa1-ef5bd5438cee-19516-0000163e9eab9b43_zps48802ce4.jpg

    Thoughts? Comments? Suggestions?

  2. #2
    ouch....
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    I've had good luck with the bontrager 2.5 tubes.
    I've tried some skinnier ones (2.1) in a pinch, that did similar things as yours.
    Riding.....

  3. #3
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    The tubes I used were Forte brand. Maybe thats the problem...

  4. #4
    Nuts
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    I'm with Shark the Bonty 26x2.5 dh tubes work great. Also a friend of mine is using a 24" Specialized tube that is working awesome!
    And I love beer!!

  5. #5
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    Just to clarify: a 24" tube in a 26" wheel?

  6. #6
    mighty sailin' man
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    That's fugly. Only time I've had them do that was when I tried pre stretching them outside the tire. You will have to run higher pressures at first until the tube stretches. You're probably expecting that

    is that tube reinforced at the skinny spots in the image?
    Quote Originally Posted by davidarnott
    wheelies, beyond being the best way over any sort of obstacle, both above or below, are are the steedliest expresstion of joy

  7. #7
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    2.4-2.75 SL Q-tubes are great for this application.

  8. #8
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    I dont think they are reinforced, but there sure is something different about that spot!

  9. #9
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    Quote Originally Posted by MiniTrail View Post
    is that tube reinforced at the skinny spots in the image?
    sure looks that way.

  10. #10
    mighty sailin' man
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    shape it into a critter for giggles
    Quote Originally Posted by davidarnott
    wheelies, beyond being the best way over any sort of obstacle, both above or below, are are the steedliest expresstion of joy

  11. #11
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    Quote Originally Posted by MiniTrail View Post
    shape it into a critter for giggles
    maybe even a cool kid...LOL

  12. #12
    mighty sailin' man
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    Quote Originally Posted by nvphatty View Post
    maybe even a cool kid...LOL
    their mascot

    lighten up guys it's a joke

    Tube Issues-mickey-mouse-centerpiece-balloons-denver1.jpg
    Quote Originally Posted by davidarnott
    wheelies, beyond being the best way over any sort of obstacle, both above or below, are are the steedliest expresstion of joy

  13. #13
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    Quote Originally Posted by nvphatty View Post
    2.4-2.75 SL Q-tubes are great for this application.
    What he said. I tried a few other brands that did not work well at all.

  14. #14
    Nuts
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    Quote Originally Posted by blown240 View Post
    Just to clarify: a 24" tube in a 26" wheel?
    Yup, blow a 26 " tube up to the size you need to fill a 4.0 without being in a tire and see what the diameter is. He swears that the 24" is the way to go and I believe him.

    edit: I was just told that the Spesh tubes 24x 2.3/3.0 are discontinued but you might be able to find some at your lbs otherwise there are a few other companies making 24x3.0 tubes but not sure about the reinforcing on them and how they expand.

    New Specialized Bike Tyre Tube 24 x 2 4 3 0 Shraeder Valve Car Pair | eBay
    And I love beer!!

  15. #15
    be1
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    Quote Originally Posted by nvphatty View Post
    2.4-2.75 SL Q-tubes are great for this application.
    ^+1

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    We just used Specialized presta DH tubes on the Canning Stock Route trip running BFL's, and honestly there was no discernible performance difference between them and the Surly Toobs. Even at uber-low pressures. Lighter, cheaper, and they pack smaller. All around a pretty decent fatbike tube, even if they are made by the Big-S...

    Scott
    Last edited by sfelter; 09-04-2013 at 08:36 PM. Reason: dumb-dumb mispelling

  17. #17
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    These Q tubes have worked fine in my BFL's, running 5 to 6 psi. I just put them in my Bud n Lou and they aired up fine, although I have yet to ride them. Inflated out of the tires, there is a noticeable constriction by the valve, but I'm not aware of it while riding.

    Riding Fat and still just as fast as I never was.

  18. #18
    Nemophilist
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    Ummm...

    Air pressure will seek the path of least resistance, until it can't expand the weak spots any farther. When the soft spots in the tube hit the inside of the tire, they will not be the soft spots anymore, relative to the rest of the tube. The other spots will then expand. Blowing a tube up outside the tire might be ugly in this case, but it is not a particularly relevant situation.

    Will it be ideal? Don't know. Blow it up to 40 to seat your soaped tire, air down, and see if you then have spots on the tire that are unsupported. I'd guess not.
    Most people ply the Well Trodden Path. A few seek a different way, and leave a Trail behind.
    - John Hajny, a.k.a. TrailMaker

  19. #19
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    Quote Originally Posted by TrailMaker View Post
    Ummm...

    Air pressure will seek the path of least resistance, until it can't expand the weak spots any farther. When the soft spots in the tube hit the inside of the tire, they will not be the soft spots anymore, relative to the rest of the tube. The other spots will then expand. Blowing a tube up outside the tire might be ugly in this case, but it is not a particularly relevant situation.

    Will it be ideal? Don't know. Blow it up to 40 to seat your soaped tire, air down, and see if you then have spots on the tire that are unsupported. I'd guess not.
    You can't prove that. It's like saying you're positive that the refrigerator light goes off when you close the door.

  20. #20
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    Quote Originally Posted by SmooveP View Post
    You can't prove that. It's like saying you're positive that the refrigerator light goes off when you close the door.
    my oven light goes off when i close it does that count?

  21. #21
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    Quote Originally Posted by nvphatty View Post
    my oven light goes off when i close it does that count?
    Only if you're closing it from the inside.

  22. #22
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    Quote Originally Posted by SmooveP View Post
    Only if you're closing it from the inside.
    it has a glass window whilst to see through.

  23. #23
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    Quote Originally Posted by nvphatty View Post
    it has a glass window whilst to see through.
    So it's a little less claustrophobic when you're in there, then?

  24. #24
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    Quote Originally Posted by TrailMaker View Post
    Ummm...

    Air pressure will seek the path of least resistance, until it can't expand the weak spots any farther. When the soft spots in the tube hit the inside of the tire, they will not be the soft spots anymore, relative to the rest of the tube. The other spots will then expand. Blowing a tube up outside the tire might be ugly in this case, but it is not a particularly relevant situation.

    Will it be ideal? Don't know. Blow it up to 40 to seat your soaped tire, air down, and see if you then have spots on the tire that are unsupported. I'd guess not.
    I see your point, but one of the issues I had was that the soft spots expanded until they touched each other and that left a "fold" of sorts where the thin spot was. Maybe this isnt an issue at all, maybe it is. Thats one of the reasons I started this thread.


    As a side note, I never thought of soaping the bead.... thats a great idea...

  25. #25
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    ...This is an outrage! I can't believe you would have the audacity to go off-topic in the fatbike forums...you are doing a disservice to yourselves and those new to the sport, looking to you as ambassadors of fat! And please ensure the gas is off next-time you climb into your oven...your misunderstanding of oven lights is obviously a result of near-asphyxiation which precipitates an elitist-disrespect for the common-man and the people that hate Whirlpool just because they make a great oven...
    If Huffy made an airplane, would you fly in it?

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