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  1. #1
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    26" tubes in a 27.5 tire?

    Just wondering if they are compatible. Picked up a Bronson and the LBS didn't have a 27.5 specific tube but gave me a Schwalbe tube that works for 27.5 and 29. If one is compatible for 27.5 and 29, is there one for 26 and 27.5?

  2. #2
    Cleavage Of The Tetons
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    A good, thick (2.25-3.0) 26" tube will work just fine.
    "We LOVE cows! They make trails for us.....

    And then we eat them."

  3. #3
    Mr.650b - Mr.27-5
    Reputation: Kirk Pacenti's Avatar
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    26" tubes work perfectly well with 27.5" wheels.
    “Those that say it can’t be done should get out of the way of those doing it.”

    PacentiCycleDesign

  4. #4
    Wrench
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    If you want to have heavy wheels, sure. But any standard 26" 1.9-2.1 inch tube will work.
    Quote Originally Posted by rideit View Post
    A good, thick (2.25-3.0) 26" tube will work just fine.

  5. #5
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    I'm running tubeless, just need to tube for a back up. Good to know I can run a 26" tube.

  6. #6
    Cleavage Of The Tetons
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    Yes, but thin tubes will stretch even more, rendering them very fragile towards pinchflats.
    Kinda like a racer-weenie tube/tire.
    "We LOVE cows! They make trails for us.....

    And then we eat them."

  7. #7
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    The tube stretches an extra 4" to fit around a 27.2" wheel compared to a 26" rim. Now I haven't measured the diameter of either rim size, but that's not much stretching for a tube.

  8. #8
    Wrench
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    When you show me this phenomenon, I may give your post credit. However, I raced/rode for a year using 1.9-2.1 26" tubes in my 650b (AM Classic wheelset, first gen) with no issues whatsoever.

    Tubes stretch no matter what, and pinch flats are not completely dictated by the thickness of your tube. I run 25 PSI in the rear of my 26" SS with tubes. If I pinch flat, I'm not riding right.
    Quote Originally Posted by rideit View Post
    Yes, but thin tubes will stretch even more, rendering them very fragile towards pinchflats.
    Kinda like a racer-weenie tube/tire.

  9. #9
    Cleavage Of The Tetons
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    [QUOTE=FNFAL;10499541]When you show me this phenomenon, I may give your post credit. However, I raced/rode for a year using 1.9-2.1 26" tubes in my 650b (AM Classic wheelset, first gen) with no issues whatsoever.

    See, just like a racer-weenie would say!
    Why do you think DH tubes are thicker...for the flavor?
    "We LOVE cows! They make trails for us.....

    And then we eat them."

  10. #10
    Wrench
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    Quote Originally Posted by rideit View Post

    See, just like a racer-weenie would say!
    Why do you think DH tubes are thicker...for the flavor?
    Because they must support heavier tires under more stress than about 99% of all riding done by anyone using this forum.

    But for everyone else out there, a standard tube will suffice.

  11. #11
    Cleavage Of The Tetons
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    Quote Originally Posted by FNFAL View Post
    Because they must support heavier tires under more stress than about 99% of all riding done by anyone using this forum.

    But for everyone else out there, a standard tube will suffice.
    Well, then, I guess the 1% live here in Jackson. !

    Oh, wait...they do.

    carry on.
    "We LOVE cows! They make trails for us.....

    And then we eat them."

  12. #12
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    good quality 26" tubes should work very well.

    I've been using 130g Maxxis Ultralight tubes in 29" wheel bikes since the start of 2007, with NO issues. I'll continue to use them for the 650b bike that I'll have in a couple of weeks.

  13. #13
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    Quote Originally Posted by Kirk Pacenti View Post
    26" tubes work perfectly well with 27.5" wheels.
    What this guy said. Also, KP, I didn't say this in the thread, but you had the best answer of all time in responding to Did you Switch From a 29er. I use 26er tubes for the same reason as OP stated. LBS doesn't have 650b tubes, no problems with 26er tubes. I have not found I need thicker or bigger sizes. Being in the midwest I don't have much downhill.
    No fuss with the MUSS

  14. #14
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    Was using 26 tubes in my 29er without issue, so I imagine it would be a better fit.

  15. #15
    Nouveau Retrogrouch SuperModerator
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    26" tubes in a 27.5 tire?

    Quote Originally Posted by FNFAL View Post
    If you want to have heavy wheels, sure. But any standard 26" 1.9-2.1 inch tube will work.
    And IME the thin tubes work better than thick ones. They stretch more easily. Have used ultralight 26x1.9-2.1 tubes in 29x2.3 tires for years.

    26" tubes are a better choice for 650B than 29" tubes. May have to fold the later to fit.
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  16. #16
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    where are the tubes that came with the Bronson, just curious...
    Stumpy FSR Comp 29er
    SC Bronson C

  17. #17
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    Quote Originally Posted by jgutz71 View Post
    where are the tubes that came with the Bronson, just curious...
    I bought the bike from a shop 150 miles away and they had it set up tubeless already. My LBS is the one who didn't have a 27.5 specific tube.

  18. #18
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    got it, I was just curious...
    Stumpy FSR Comp 29er
    SC Bronson C

  19. #19
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    Pump up a 26 inch tube outside of a tire. It will easily expand to 4 feet in diameter.

  20. #20
    Nouveau Retrogrouch SuperModerator
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    26" tubes in a 27.5 tire?

    Quote Originally Posted by smilinsteve View Post
    Pump up a 26 inch tube outside of a tire. It will easily expand to 4 feet in diameter.
    Try 6+ feet. No photoshop.26" tubes in a 27.5 tire?-imageuploadedbytapatalk1372971476.663653.jpg
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  21. #21
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    If your running tubeless you only need a tube to get you home typically like myself. 26 tubes, any of them will work fine. Tubeless rules anyways. I hate w I have to run a tube anymore. Feels like crap compared to tubeless.

  22. #22
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    Continue to pump the tube up for some real excitement.

  23. #23
    derp
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    Quote Originally Posted by RetroG View Post
    Continue to pump the tube up for some real excitement.
    I was pumping my tire up to spec, haven't been using my bikes for a couple of months, got an interesting reaction from it when it reached 40psi ...

    2006 Cannondale Rush 650b
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