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Bent / Bulged braking surface - Am I ok?

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Bent / Bulged braking surface - Am I ok?

Old 12-20-09, 06:00 PM
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Bent / Bulged braking surface - Am I ok?

I stupidly tried hopping up a curb the other day (small curve) and jumped too early. My front wheel cleared fine but the rear landed directly on the corner of the curb, and I heard the rim bottom out. Tire pressure was fine for a bit but the tube has a slow leak. However, after removing the tire and tube just now one side of the rim has a large bulge in it (it was bent a lot). I bent it back with a towel and pliers and burred up the braking surface a bit, but not more than I think I can sand. However, the brake surface is slightly concave near the seam between the rim and the "V" section ( I have velocity fusion rims). The rest of the rim is totally true (no problems in total bend of the rim), but the braking surface is still a bit fuddled.....

Am I ok or should I get a new rim? I ride this bike on both road and for cross, and Im scared that going fast on downhill sections of the road might be hazardous....although it is (thankfully) the rear rim.
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Old 12-25-09, 08:31 AM
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you should be ok for a while. is the wheel still round? no flat spot. post a pic if you can.
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Old 12-25-09, 05:31 PM
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It's probably not going to be okay. Straighten it as much as possible and then file/sand down the burrs. After that, it'll most likely still catch at that spot when you're braking and annoying you enough to replace the rim.
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Old 12-25-09, 05:51 PM
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Wheel is still round, any ideas on how I can straighten the brake surface further? Im fairly confident in the strength of the wheel (minus a few slightly loose spokes ). I think I will load up a new tube soon and give it a whirl
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Old 12-26-09, 11:20 AM
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I did something similar in a race to my Velocity Escape rim. There was a nice bulge that I c-clamped down as best as I could. It's not perfect but I've used it since in several races without any braking trouble. I wouldn't worry too much about it since like you said it's the rear wheel.
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