Thread: Bulge in rim
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Old 08-08-10, 06:06 PM
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Technochicken
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Bulge in rim

I just rode on an old front wheel of mine for the first time in about a year, and found that when I brake, the bike jolts horribly every rotation of the wheel. The effect is jarring, noisy, and I was afraid to brake hard down hills. I took the wheel off when I got home, and found that there is a slight bulge in both sides of the rim at the seam in the rim. The spot is probably about 2cm long, and the bulge appears on both sides of the rim. I do not know if the bulge used to be there, but I never had any braking problems on the bike the wheel used to be on. Between that time and now, I have trued and tensioned the wheel, but that should not cause the rim to spread like this. The rim is a vintage Super Champion rim, probably almost 40 years old, and I have no idea how many miles are on it.

Is there any way to fix this, short of buying a new rim? I have tried using a clamp, but could not get very much pressure on the rim this way. I can post pictures if necessary.

Thanks for any help,

-TC
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