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Old 02-27-14, 01:04 AM   #1
JesseMN
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Dented Steel Frame

Reaching out to the bicycle community for some suggestions. Here is an old Centurion bicycle frame that might date back from 77 that's what I am gathering from the bottom of the serial code. The frame is steel. What you are seeing is where a kickstand use to take place there and over time whomever had owned the bicycle previous kept on tightening the hole and little by little crushed the bottom of the frame. I was checking to see if there were any cracks and there are none. I really want to save this bicycle and turn it into a fixed gear but in the process don't want to buy parts and let the frame crap out on me. I was thinking just as an idea to have the bottom of the frame be re welded. Any help would be much appreciated.

Kindest Regards,
Jesse

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Last edited by JesseMN; 02-27-14 at 01:09 AM.
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Old 02-27-14, 06:54 AM   #2
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Clean it up, get some fresh primer & paint on it & ride it.
Check it periodically to see if any cracks develop.
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Old 02-27-14, 07:09 AM   #3
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Dented Steel Frame

Common occurrence. Look at the dimples on the driveside of the bike made for chainring clearance. A little flattening of the chainstays from an overzealous mechanic won't hurt anything.
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Old 02-27-14, 10:32 AM   #4
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Good Morning,
Thanks for the help. This is going to be my project bicycle before the summer.
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Old 02-27-14, 10:40 AM   #5
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The dents don't matter at all, but the depth of the rust might. I test these by probing with an ice pick. Scratch away to get a sense of the depth, and end by trying to push the pick through the thinnest place. Don't try to drive the pick through, just lean on it a bit.
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Old 02-27-14, 11:09 AM   #6
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Quote:
Originally Posted by JesseMN View Post
I was thinking just as an idea to have the bottom of the frame be re welded. Any help would be much appreciated.
I don't think that frame was welded, it was brazed. If you want to replace the damaged parts, you will have to have them re-brazed into place.
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Old 02-27-14, 11:33 AM   #7
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JesseMN, Very likely it'll be fine as long as there are no sharp creases. On my current build I had to make the very same judgement call, which I hope is correct.

Brad.
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