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Thread: MTB flats

  1. #1
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    MTB flats

    I have been riding for a few months without any flats, things have been great but I knew it was coming so I bought some tubes and tire levers. On Monday I road this crazy new MTB trail that just opened near my house right after 3 days of heavy rain. It was a blast but when I got back I noticed my front tire was low and figured it would be flat for my next ride. Last night when I got home I went out to the shop early because I knew I would have to change that tube, but wait both tires are flat.. Damn ok changed them both and off on my "normal" weekday ride. At the farthest point almost take a header because the front tire gets really sloppy on me.. Hmmm ok another flat.

    So my question is do you guys run tube protectors? If so what are the draw backs?

    I was look at Mr Tuffy's
    http://www.amazon.com/Tuffy-Bicycle-...tube+protector

    I'm not a fan of slime tubes but are they better than tube protectors?

  2. #2
    Senior Member goldfinch's Avatar
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    Are you sure you got whatever cause the flat out of your tire that flatted twice?


    I wouldn't use slime. Gums up the valve. And, my husband tried it once in Texas and slime ended up leaking out of a hole in the tire. What a mess!

    What kind of tires do you use?

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    I use Nashbar elevator treadguards which have a very aggressive center tread.

    http://www.nashbar.com/bikes/Product...0052_172915_-1___

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    I ran my hand inside the tires before I put the new tubes in. I checked the rim tape for any abnormalities as well.

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    Quote Originally Posted by DaveSC View Post
    I ran my hand inside the tires before I put the new tubes in. I checked the rim tape for any abnormalities as well.
    Use your finger tip. Check again and again. It's possible to miss a tiny shard of something. Bend the tire inside out segment by segment. Look for cuts inside and out.

  6. #6
    Senior Member moochems's Avatar
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    I don't use liners, but I do use premium tubes. They are heavy, and make me considerably slower, but that doesn't bother me. Have t gotten a flat since.

    On the old bike I have, that I am trying to sell, I had to replace the tubes. I took the old tubes, cut the valve away and split the tub lengthways and used that as a liner. Seems better than nothing, can't beat the price.

  7. #7
    SuperGimp TrojanHorse's Avatar
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    Use a cotton ball - those things snag on everything. I had a tiny little wire sticking out of the tire tread on the inside of the tube one time... took me 3 flats to find it. Another difficult to diagnose culprit can be the rim tape, but if you've been riding for a while it's not likely to be rim tape. My wife's road bike came with some cheap plastic strip that depressed into the spoke wells and she was getting flats there pretty regularly till I put velox on the rim.

    Good luck, flats are frustrating.

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    uhg.. They are both flat.

    Ok I need to spend some time figuring out what is going on. I didn't find anything in the tires and the only thing I have changed is that I went to the nashbar elevators with tread guard. I'll spend some quality time with these things tonight and figure this out.

  9. #9
    got the climbing bug jsigone's Avatar
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    I run tubeless setup on both my MTBs and very rare do I have to use a tube. IE when a rock rips the side wall of the tire. I've been running them this way for the past 5 yrs.

    If you're wheels are not tubeless compatible, you can run ghetto tubeless, it does work, I've done it in the past and holds air just as good

    With ghetto tubeless, you need to find a tube 1 size smaller then you have AND removable valve core. 29er us 26", 26" use 24" or 20"
    The smaller tube will act as your rim tape but also adds more pressure to the hook part of the bead.

    part 1
    http://www.youtube.com/watch?v=WRM7gq1fcoQ

    part 2
    http://www.youtube.com/watch?v=PwON2VxZL0g

    With the valve core removed, use this type of air compressor attachment to set the bead.
    http://www.amazon.com/IIT-10010-Piec...g_bs_3753811_9


    You can add some glitter to the stans mix for extra plugging power and to know faster where it's leaking from.

  10. #10
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    I run tubeless too--even on my commuter. Stan's Flow wheels and tape on the MTB, and just Stan's goop in the Mavic 819 UST's on the commuter. No leaks, fairly bomb proof.
    "I had this baby hand made in Tuscany, from titanium blessed by the pope. It weighs less than a fart, and costs more than a divorce..."

  11. #11
    got the climbing bug jsigone's Avatar
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    LOL i even have stans sealant in my 50mm tubulars, no flats in 1500+ miles, now the tires are worn out

  12. #12
    Nigel nfmisso's Avatar
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    I hate flats, and ride city streets with glass, nails, etc.

    I run Kevlar belted tires, Stop Flats 2 liners, and Avenir Thorn Resistant tubes.
    Nigel
    Mechanical Design Engineer

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