Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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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.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance