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Top tube dent

Old 10-30-18, 09:22 AM
  #1  
Scotty0424
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Top tube dent


I have been looking for a good steel-frame road bike and I found a Jamis Quest with carbon fork and good components for good price. The hitch: A dent in the top tube. About the size of a penny. The forum apparently won't let me post a pic because I'm new here. In general though, what's the consensus on how much this compromises the frame's strength?

Last edited by Scotty0424; 10-31-18 at 09:20 AM. Reason: Add pic
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Old 10-30-18, 09:27 AM
  #2  
TrojanHorse
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How much does an unknown dent compromise the frame? Steel's pretty tolerant but I don't know that I'd intentionally buy a frame that was already damaged.

Hm... c'mon Scotty, one more post and you can post that pic!
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Old 10-30-18, 10:06 AM
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FinalDistance
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Wow with carbon its a good one!
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Old 10-30-18, 10:48 AM
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indyfabz
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Makes me wonder what else is wrong with the bike.
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Old 10-30-18, 04:33 PM
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Scotty0424
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Originally Posted by TrojanHorse View Post
How much does an unknown dent compromise the frame? Steel's pretty tolerant but I don't know that I'd intentionally buy a frame that was already damaged.

Hm... c'mon Scotty, one more post and you can post that pic!
And I can't think of anything to say.
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Old 10-30-18, 05:41 PM
  #6  
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My steel beater bikes are covered in dings like a war scarred battle tank and they''re fine (adds to the character I think). If they're the size of a penny then you've got nothing to worry about and the frame will not suddenly collapse on you - if it does fail it will slowly propagate a crack from the ding - but yes a pic would be nice. And the Quest is a very fine bike (with Reynolds 631 tubing I assume).
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Old 10-30-18, 06:10 PM
  #7  
jon c. 
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If the price is right, it's a nice bike and a small top tube dent is nothing to worry about in terms of safety. But it kills resale value. If you're planning to ride it and don't care about that, then go for it.
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Old 10-30-18, 06:59 PM
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mtbikerinpa
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I had a 1.5" dia dent on my mtb for about a year til I got to just recently fixing it. Most of the time not a structural deficiency but it is a bothersome thing to look at lol. I had really good luck with a product called a dent removal block from BicycleTool.com - Bicycle Tools (several sizes listed).

There are a few youtube videos about using them and I was able to take the dent down to a 4mm radius shallow and finish with bondo. Now with primer it is not visible at all.
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Old 10-30-18, 07:19 PM
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Top tube dents on the side of the tube are frequently the result of the handlebars hitting the top tube. This is seldom a structural concern; wrap some handlebar tape over the dent and ride on. Another frequent dent is under the top tube, just behind the upper head lug, frequently accompanied by a dent under the down just behind the lower head lug. These are the result of a collision and can affect the handling of the ride. Dents elsewhere on the top tube would have to be assessed by depth, extent, and whether the tube itself has been bent out of alignment.
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Old 10-30-18, 07:59 PM
  #10  
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Has dent for 27 years



Working on hybridizing it


Head on from a little distance


Dent is lower right side of the head tube
I have a steel frame bike, 1991 model Ochsner , that I purchased new in 1992. It had a dent in the head tube when I purchased it. It still has the same dent that looks the same as the day I bought the bike. I still love to ride it and it has a lot of miles and a lot of other scratches and dings. I am in the process of hybridizing it now. I have no desire to restore it, I love it the way it is. It is now my just jump on and ride bike. Handles great, extremely comfortable and one of the quietest bike I have ever ridden. I attached some pics just so you could see it at 27 years old and still running strong.
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Old 10-30-18, 08:02 PM
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It was $100 dollars off because it was the previous year model and the shop owner knocked another $100 off because of the dent If I would walk out the door with it. Same owner at the shop now and he always smiles when I walk in the door with it and says " The old School Ocnsner:
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Old 11-03-18, 02:26 AM
  #12  
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Originally Posted by delbiker1 View Post
I have a steel frame bike, 1991 model Ochsner , that I purchased new in 1992. It had a dent in the head tube when I purchased it. It still has the same dent that looks the same as the day I bought the bike.
I'd knock it out by pressing a snug-fitting socket into it.
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Old 11-03-18, 04:31 AM
  #13  
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I've had a bike with a top tube dent for many years and no issues. But that one is a little big for me, I would pass. I did read about a guy who filled his tube up with water and plugged it somehow, then he froze it and it popped the dent out.
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Old 11-03-18, 08:04 PM
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I doubt that dent is gonna impact the frame's strength... thus our love of steel. It will definitely impact price though; if you're gonna buy, use that dent to buy cheap.
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Old 11-03-18, 08:12 PM
  #15  
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Seeing the pictures now, your dent looks like mine did. Rode through several mtb races and no issues, but yes a purpose built frame block would definitely fix it if you wanted to do a little paint work.
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