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Old 07-17-14, 09:09 PM   #1
nycsupersix
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Canondale Evo Super Six Chainstay Damaged Due to Tire Rub

I had the misfortune of using Michelin Pro 4s 25MM on my Canondale SuperSix Evo. Unfortunately I had tire rub on the chainstays that I may have caught too late.
Does anyone know if the bike is compromised based on the pictures? I also notice the tire rub was more severe on the left than the right, wheel doesn't appear perfectly centered.

So is the frame toast?

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Old 07-17-14, 09:44 PM   #2
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To me it looks fine. Just the paint and the surface epoxy were scratched. As long as the fibers underneath are undamaged, I see no reason to panic.

I suggest running 23s in the future.
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Old 07-18-14, 09:32 AM   #3
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+1, close the wound with some paint or clearcoat and forget about it. Any serious attempt to patch will further reduce the tire clearance, and you don't seem to have enough as it is.

Meanwhile, don't blame the tires, or the decision to try them, blame the inattentiveness to the rub, which should have announced itself pretty clearly. Usually when I see chainstay tire rub it's on a bike where the wheel went out of true and there was no option other than limping home with the rub.

BTW- this is a major reason I hate the trend to narrow fork and chainstay clearances on HP bikes. In most cases there is no meaningful benefit except looking cool, but there's serious limitations on tire width, and no margin for error or mishap. It's OK for criterium racers, but makes no sense for anyone else.
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Old 07-18-14, 10:06 AM   #4
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Originally Posted by FBinNY View Post
BTW- this is a major reason I hate the trend to narrow fork and chainstay clearances on HP bikes. In most cases there is no meaningful benefit except looking cool, but there's serious limitations on tire width, and no margin for error or mishap. It's OK for criterium racers, but makes no sense for anyone else.
+ 1

marketing trumps common sense
as usual
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Old 07-18-14, 03:46 PM   #5
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+1, close the wound with some paint or clearcoat and forget about it. Any serious attempt to patch will further reduce the tire clearance, and you don't seem to have enough as it is.

Meanwhile, don't blame the tires, or the decision to try them, blame the inattentiveness to the rub, which should have announced itself pretty clearly. Usually when I see chainstay tire rub it's on a bike where the wheel went out of true and there was no option other than limping home with the rub.

BTW- this is a major reason I hate the trend to narrow fork and chainstay clearances on HP bikes. In most cases there is no meaningful benefit except looking cool, but there's serious limitations on tire width, and no margin for error or mishap. It's OK for criterium racers, but makes no sense for anyone else.
In this day of scientific testing the narrow width makes on sense for anyone.
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Old 07-18-14, 04:49 PM   #6
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Thanks for the help/comments, yes I realize it was completely my own stupidity of not noticing the rub. Learned my lesson on checking for wheel centering and tire clearance. Thanks!
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Old 07-18-14, 05:08 PM   #7
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In this day of scientific testing the narrow width makes no sense for anyone.
Fashion trumps sense . . . marketing trumps truth.
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