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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 08-25-04, 08:13 AM   #1
ddbum
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Flat tires

I've been commuting for about 3 weeks now and have gotten flat tires on about 1/3 of my rides. Are the kevlar inserts worthwhile or is there something else you've used? Is is just cheap tires?
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Old 08-25-04, 09:41 AM   #2
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I have these green "slime" inserts, which actually aren't slime at all but a hard plastic. Funny thing is though, the week after I put it in the front tire, I got a flat in that same tire from some little thorns that pierced the side if the tire.
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Old 08-25-04, 09:51 AM   #3
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You could try something similar to Specialized Armadillo tires, along with some "thorn resistant" tubes (just thicker I believe)
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Old 08-25-04, 10:08 AM   #4
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What is the source of the flats? If they are on the inside of the tube, you may have a spoke poking through the rim tape. If there are 2 holes, you aren't keeping your tires properly inflated. If they are on the outside of the tube, you may have something stuck in the casing of the tire.
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Old 08-25-04, 10:59 AM   #5
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I had similar fate with punctures from outside the tube, but when I started putting more air in my tires, the problem literally went away. I was NOT getting pinch flats either. Seems like the cheapie $10 slicks I run didn't like being underinflated and were punctured easier for some reason. Air up!
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Old 08-25-04, 11:06 AM   #6
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I'm running about 35-40 PSI on road tires for a mountain bike, not slicks. That's all they suggested. Only one puncture that I've found but I will have to check tonight and see if the spokes are the issue. That is a definite possibility. The whole bike is a cheapie Magna which I'm replacing with a Trek 420 touring bike next week. I don't want to put much money into this but I do want to ride in the meantime.
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