Unfortunately a couple of years ago (or more) someone decided they really wanted my bike, and ended up pulling at it so hard, that where my D-lock was placed, ended up denting the frame.
Considering that I’ve used the bike since for at least two years, I presume it would have failed by now if it was likely to occur. Are there any options for strengthening this just in case?
Wend-E-Baconator on
Aluminum or steel?
DRHORRIBLEHIMSELF on
Yea, I wouldn’t ride that.
ryan1064 on
The problem with this is overtime more and more stress is put on this weak point and it MIGHT fail. Picture this though you are riding fast down a hill and seam from concrete to asphalt appears as you are going over the bump this part in question fails launching you 30 mph off your bike and onto your neck where you proceed to break it either killing or paralyzing yourself. I personally wouldn’t ride the bike.
Herr_Tilke on
On the seat tube right above the derailleur braze on is probably the best place to have a dent like that. Generally that section of the frame doesn’t see a ton of force loading (as opposed to say the down tube or chain stays). If the frame does fail in the future, it’s probably not going to be instantly catastrophic. If you’re concerned about it, watch the damaged section for any cracks that might form and if they begin to propagate. I’d feel fairly confident continuing to ride that bike if it has had that damage for over two years.
BadDataScience on
ouch. if you can afford it I’d suggest replacing the bike. If you’re broke I feel you and good luck.
Puzzleheaded-Tip660 on
Every bike frame I’ve had fail, failed at a weld. I might have done something stupid and then it failed at a weld, but my point is the tubes don’t break in the middle… And there is a reason for that: there are bending forces at the frame corners, the stresses are weird there. This tube is under some relatively simple linear forces and is most likely significantly stronger there than it needs to be. The amount of metal needed to support the bike at this location is significantly less than the amount of metal needed to keep the tube from denting when it falls over.
My question is how did the frame get dented? If this happened as a result of a crash, the forces of the crash that produced this dent probably damaged other things too, and I’d be more concerned about that. Carefully wash your frame and inspect it. If this dent is the result of hitting just this one point with a hammer, I would totally ignore it and keep riding it.
SimpsonMaggie on
Is it steel? If yes I wouldn’t worry much as long you’re not racing on it. Then I’d minimize every other risk.
Round-Beyond5477 on
Scrap it. Unless it has sentimental value to you, it’s not worth fixing.
13 Comments
Unfortunately a couple of years ago (or more) someone decided they really wanted my bike, and ended up pulling at it so hard, that where my D-lock was placed, ended up denting the frame.
Considering that I’ve used the bike since for at least two years, I presume it would have failed by now if it was likely to occur. Are there any options for strengthening this just in case?
Aluminum or steel?
Yea, I wouldn’t ride that.
The problem with this is overtime more and more stress is put on this weak point and it MIGHT fail. Picture this though you are riding fast down a hill and seam from concrete to asphalt appears as you are going over the bump this part in question fails launching you 30 mph off your bike and onto your neck where you proceed to break it either killing or paralyzing yourself. I personally wouldn’t ride the bike.
On the seat tube right above the derailleur braze on is probably the best place to have a dent like that. Generally that section of the frame doesn’t see a ton of force loading (as opposed to say the down tube or chain stays). If the frame does fail in the future, it’s probably not going to be instantly catastrophic. If you’re concerned about it, watch the damaged section for any cracks that might form and if they begin to propagate. I’d feel fairly confident continuing to ride that bike if it has had that damage for over two years.
ouch. if you can afford it I’d suggest replacing the bike. If you’re broke I feel you and good luck.
Every bike frame I’ve had fail, failed at a weld. I might have done something stupid and then it failed at a weld, but my point is the tubes don’t break in the middle… And there is a reason for that: there are bending forces at the frame corners, the stresses are weird there. This tube is under some relatively simple linear forces and is most likely significantly stronger there than it needs to be. The amount of metal needed to support the bike at this location is significantly less than the amount of metal needed to keep the tube from denting when it falls over.
My question is how did the frame get dented? If this happened as a result of a crash, the forces of the crash that produced this dent probably damaged other things too, and I’d be more concerned about that. Carefully wash your frame and inspect it. If this dent is the result of hitting just this one point with a hammer, I would totally ignore it and keep riding it.
Is it steel? If yes I wouldn’t worry much as long you’re not racing on it. Then I’d minimize every other risk.
Scrap it. Unless it has sentimental value to you, it’s not worth fixing.
Happy NBD.
Trash
DAYUM
how bruh