Tires Tubes keep popping :|

Discussion in 'Bicycle Repair' started by Waxxumus, Jul 6, 2015.

  1. Waxxumus

    Waxxumus Member

    Sooo, after riding about 450 miles, the sprocket has obviously bent the rear wheel slightly. So it is a little wonky, but not so much that you can feel it vibrate at high speed, still fairly stable.

    I'm not sure if this has to do with my problem.

    Had a tire go flat, appeared to be 2 holes in the inner side of the bike tube.
    Tried to patch, tire blew.

    Bought a new tire, examined the rim, no real sharp objects or anything near where the hole is. Examined the tread and the inside of the tire, nothing.

    Put the new tire in, pumped it up to 45 psi, and let it sit overnight.
    Took it out for an hour ride the previous night.
    Same air pressure in the morning. Seemed fine.

    Rode down the block, and noticed my rear tire was drifting with throttle?
    Awe man another flat. And fast too. Got ****ed. Put it away for the night.
    Came back next day to a completely flat tire resting on my rim. :|

    .5 mm hole in the top of the tube again.
    But not in the same place.
    Still no indication of anything sharp enough to puncture the tube, pressed down roughly on the inner portion of the rim where the spokes come through in the location where it popped with a balloon (and my fingers) to see if it would pop. Nope.


    Maybe snakebite?

    Going to try lining the inisde with ducktape, and sanding down any rough edges in the frame/sprocket end.

    Im hoping this time it works, because its a hell of a job getting the break lined up, the 2 chains on, the wheel straightened and tightened appropriately, all while holding the bike up with the other hand XD
    (really need a bike stand or a double kick stand)

    Should I try to pump the next tube up to 60 psi next time to see if it will last?

  2. jaguar

    jaguar Well-Known Member

    If the spoke ends are touching the inner tube then they eventually cause a hole by slight movements of the tube. so the balloon test can't catch that cause.
    You should be able to feel anything sharp inside your tire. Run your fingers slowly over all of the inner surface.
  3. Timbone

    Timbone Active Member

    Jag is right. You gotta have the rim liner. French call it fond de jante.

    If you are running 26" wheels (bet you are), I would very strongly suggest those Slime flat resistant tubes. Best flat defense ever. One less thing to fret over.

    If you are running 700C (doubt it because your tire pressure is so low), you are gonna get flats.
  4. The_Aleman

    The_Aleman Active Member

    Remove the rim strip and inspect each spoke head, make sure none are obviously loose.

    Run a layer or 2 of pvc tape centered over spoke head holes. Then, install a new rim strip. I recommend these:

    A quality tube is also a must for MaBing. We ask a heckuva lot more out of our bikes than most people. I recommend these:
    link: (make sure you select proper size)

    A tire liner may also help, but it's not neccesary unless the roads you ride on are known to have a lot of nails, screws, and busted glass.
    Oh, and goatheads!
  5. KCvale

    KCvale Motorized Bicycle Vendor

    I call it 'bullet proofing' and it's ~$25 a wheel and a MUST for the rear.
    Good rim liner, HD tube, and then a tire liner.

    I find Slime a total messy waste of money.
    It doesn't prevent punctures, and it sure don't fix them, it just slows the air leak down.
    In the mean time, you get green slime on everything when you add air.
  6. Waxxumus

    Waxxumus Member

    Well, I would agree that the slimes are great. Ive gone over 1000 miles on a slime tube over glass and rock (as the asshats in my neighborhood constantly use the bike lane as a glass recycle bin, really really ****es me off, no respect at all) But the slime never is on the inside of the tube (rim side), so it has no effect or purpose for this type of flat.

    I ended up ducktaping the hell out of the rim over the existing rim liner that was there, still could not find any indication of a rim pushing through and poking my tube, but regardless, tripled up on duck tape in the places where the flats occured, and sanded down any edges i felt were slightly rough. Then sat there and gently babied the tread until the bead was set perfect and made sure not to nic the tube.

    I bought an extra thick slime tube, and rode with my little group about 10 miles without any issue @ 60 psi.

    But If it does pop again, Ill go with the bullet proofing KCvale mentioned. probably put a tire liner on both sides of the tire with rim liner.
  7. Waxxumus

    Waxxumus Member

    Going to take the air pressure today and make sure its still good.
    Will update later.
  8. TobiasKilroy

    TobiasKilroy Member

    If i can put my 2 cents worth in.
    You will want to make sure the tire isn't walking backwards on the rim. When the pressure starts to wane on my motor bike the power will force the tire to rotate around the rim ever so slowly. this movement causes the tube to stretch in one area and bunch up elsewhere.
    That will cause light duty to pinch puncture themselves.
    It's a problem I am currently battling.
  9. KCvale

    KCvale Motorized Bicycle Vendor

    Duct tape won't stop much but better that nothing on the rim as little comes up that way ;-}

    Whatever the brand, a thick tube is great.
    The ones I get around the corner are ~4x as thick as the ones that come on bicycles.

    I do use the Smile tire liners, but again it's just a brand, it's the material that matters.
    Flexible but like frigg'n Kevlar.
    It's not, but darn good at stopping intruding sharp things ;-}
  10. Waxxumus

    Waxxumus Member

    If only my tires were a little less wide, i could get solid tires. Alas, none available for 26 x 2.125
  11. TobiasKilroy

    TobiasKilroy Member

    Boy ain't that the truth.

    I'm experimenting with putting a pneumatic tube underneath an airless to create a run flat, but I haven't had promising results.
  12. butre

    butre Well-Known Member

    I use about 5 layers of gorilla tape as rim liner personally. it's cheap and usually on hand anyway
  13. KCvale

    KCvale Motorized Bicycle Vendor

    That works, spokes don't move much and nothing comes in that way.
  14. Waxxumus

    Waxxumus Member

  15. The_Aleman

    The_Aleman Active Member

    I put over 100K miles on bikes with Slime'd tubes and I had great results. They rarely made a mess because I knew how to air up a tire.

    10 and 2. Valve stem should be between 10 and 2. Otherwise you're doing it wrong. I also used quality tubes and Slime'd em myself.

    12oz bottle, 5oz in front, 7oz in back. If you do get the stuff on something, well, it's liquid latex. Water dilutes it and washes it away.

    Bad idea. Solid tires on anything but very low speed bikes is an accident waiting to happen. The tire will not be stable during cornering.

    The bike will ride like crap and it will vibrate a lot more. The welds on the bike frame will likely fail much earlier they would otherwise.

    And you probably never will. Airless tires on anything with 2 wheels and a motor is pretty much a charlie foxtrot of a failmission.

    Don't believe me? Go bend some corners on a loaded MaB with airless/solid. Make sure you wear safety gear.

    Or don't and hopefully win a Darwin Award. :whistling:
  16. TobiasKilroy

    TobiasKilroy Member

    It's not that I don't believe it, it's that my idea is not technically airless.

    I'm trying to put an air filled tube beneath the solid tube (aka between it and the rim). You inflated the tube, pushing the foam tube against the inside of the carcass and holding the bead in place. That way if you do get a flat you aren't riding on the rim.
    Yes the rid quality at that point will be so poor you will only be able to limp home, that's the point. It's best to limp home on two wheels than it is to walk and push your bike.