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Is this a problem

Old 06-13-20, 04:39 PM
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Bopdi
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Is this a problem

I was cleaning my bike when I found these two bulges on the frame. They aren't big and can be barely felt. I bought the bike about a week ago, and it's about 9 years old however the previous owner used it about 4 times and stored it for most of the time, as he had bought a better bike. The frame is an alloy frame. Should I be worried about corrosion or is it just the surface paint?
thanks in advance.
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Old 06-13-20, 04:41 PM
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Welcome! Depends on the location of the bulges. If they are under the top tube and down tube just aft of the head tube then the bike has likely been run into something hard enough to buckle the frame. We need pix so you need to make ten posts before you can do that or link us to a hosting site where you have pix already.
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Old 06-13-20, 04:51 PM
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Originally Posted by thumpism View Post
Welcome! Depends on the location of the bulges. If they are under the top tube and down tube just aft of the head tube then the bike has likely been run into something hard enough to buckle the frame. We need pix so you need to make ten posts before you can do that or link us to a hosting site where you have pix already.
I dont have a link or anything. But the bulges are both tiny, about the size of a pin. It isn't buckling, I was thinking that maybe the tube was corroding from the inside. They are both on the down tube.
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Old 06-13-20, 05:41 PM
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Images needed for visualizing what you are describing.
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Old 06-13-20, 05:56 PM
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bulging metal can't be a good thing
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Old 06-13-20, 06:41 PM
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bulges are totally uncomfortable on a bicycle.
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Old 06-13-20, 09:27 PM
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Here is the OP's gallery with photos
https://www.bikeforums.net/g/picture/18165257

Looks like something got under the paint or sticker.
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Old 06-14-20, 08:39 AM
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Originally Posted by katsup View Post
Here is the OP's gallery with photos
https://www.bikeforums.net/g/picture/18165257

Looks like something got under the paint or sticker.
Agreed.
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Old 06-14-20, 08:46 AM
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whoever put that sticker on there was having a bad day. Nothing to worry about
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Old 06-14-20, 08:56 AM
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Thanks, that has put my mind at rest. I was scared it corrosion and I would have to throw away my new bike. Thanks for all the help
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