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  1. #1
    Constant tinkerer FastJake's Avatar
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    Patching a lumpy old tire

    I have an old tire that has one lump in the sidewall. It's an old skinwall, and the threads are starting to deteriorate. Obviously it's a goner, but until my new tire arrives is there any way I can patch it and keep riding? It's just the back tire on my cyclocross bike, so I won't be stranded if it blows out. It's still holding air at the moment but probably won't last much longer.

    My idea was to cut up an old tire and put a piece between the tire and tube to give it some shape.
    Why "derailer" is the correct way to spell the gear-change mechanism: sheldonbrown.com/derailer.html

  2. #2
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    You don't need a patch, but structural support to make up the strength lost to broken cords. A temporary repair can be made with a cloth boot or patch cut from an old tire, or rag, and glued to the inside of the tire. Search "booting a tire" on-line for more about this kind of repair.

    When I suspected that there might be adhesion problems, or the area was too large for a boot I've done the job by inflating the tube to the inside diameter of the tire (eyeball method, but try to get as close as possible) and wpiral winding cloth surgical (first aid) tape around the area extending about 1" to either side. Now the inflated tube cannot expand beyond it's cloth restricted diameter and doesn't rely of the tire's cords in that area. In one instance where no alternatives existed, I rode a tire with a 2" cut a few hundred miles with this makeshift repair.
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  3. #3
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    FastJake: If you insist on running on a shaky tire, put it on the rear where a blowout will be less hazardous.

  4. #4
    Senior Member BCRider's Avatar
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    The old adage says "if it's not broke then don't fix it". If there's no obvious dangerous looking bulges and it's not noticably ripping away from the bead wire then just ride it. Lots of folks ride tires that have age cracking in them without issue. I'd just not push the bike too hard like hopping curbs and the like if you know that it's on its last legs.
    Model airplanes are cool too!.....

  5. #5
    Constant tinkerer FastJake's Avatar
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    Well that's the thing... It does have one big bulge on the sidewall where some of the threads have failed. My new tire should be here in a few days, but until then if I can't resist riding the bike I might try booting it.

    Going easy on the bike isn't an option either. I built it up to withstand a lot of pounding (36x3 wheels, etc) and I intend to ride it that way. It's too fun not to!

    I do ride plenty of old tires without issue. The tires on my SS road bike are from 1984 and they're just perfect.
    Why "derailer" is the correct way to spell the gear-change mechanism: sheldonbrown.com/derailer.html

  6. #6
    Senior Member gforeman's Avatar
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    Quote Originally Posted by FastJake View Post
    Going easy on the bike isn't an option either. I built it up to withstand a lot of pounding (36x3 wheels, etc) and I intend to ride it that way. It's too fun not to!
    Please report back if able with your injury list. Riding on faulty equipment is idiotic. But that's just my 2 cents. Do as you please, it makes great YouTube videos anyway
    Gary F.


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  7. #7
    Senior Member BCRider's Avatar
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    Boot it by all means then if you haven't done so already. But come on now... you can't hold back from hard riding for even a couple of days until the new tire arrives?
    Model airplanes are cool too!.....

  8. #8
    Junior Member Nightstalker 6's Avatar
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    GoPro camera please. This could be cool.
    "It has now been proven that 57% of all internet quotes are wrong"---Abraham Lincoln

  9. #9
    Bikaholic blamp28's Avatar
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    Wear earplugs if you can't wait a few days. I have booted tires to get home but will not ride such a tire "on purpose". I'm glad it's on the rear. That way your potential for an emergency room visit is reduced.
    Trek Fuel XC MTB, Giant OCR Road Bike, Rans Screamer - Tandem

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