Bicycle Mechanics - bump in a frame
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09-16-05, 06:48 AM
Hallo to everyone!
I got a bump in my mtb frame. My lbs says I shouldn't worry but I am a bit afraid of "total failure".
The frame is scandium and is only 1260gr.
Should I dump it?
09-16-05, 12:25 PM
Tough to say. Maybe bring it to a couple more shops, and get a few opinions?
I got a similar dent in one of my bikes recently, more of a straight crease than the round crater you've got. I decided not to ride it even though some guys I trust said it was probably fine. I just didn't trust it.
09-16-05, 12:31 PM
Should be fine. Just bondo the dent and get some black paint and paint over it. If youe really worried do exactly what I told you and sell it.
09-16-05, 01:35 PM
That's the downtube, yeah? I wouldn't ride it. It's the most heavily stressed tube in the main triangle and one of the most common points of frame failure.
I certainly wouldn't bondo it. It won't do a thing structurally and will only serve to hide it from you should it get worse, nevermind if it ever ends up on the used market.
09-16-05, 01:52 PM
I agree with Bostontrevor. My friend's scandium MTB Frame had a similar dent in the same area. He talked to the framebuilder who, upon inspection, advised him to replace the frameset.
I think of it like an aluminum can. An AL can will support my weight if its shape and integrity is still cylindrical. However, if I place a small dent in the side and then try once again to balance atop of it, it will collapse instantanously.
09-17-05, 06:05 AM
thanks for your replies.
I think I'll get a new frame. It was a cheapo anyway. But the next will be at least 1500 g. I think. I am a bit surprised how light it was to damage it, I am not even sure how it happened. I think it was a small stone somewhere.
Now I am tempted by Ti if my dentist does not bankrupt me, but that's another story.
Should be fine. Just bondo the dent and get some black paint and paint over it. If youe really worried do exactly what I told you and sell it.You don't bondo a dent in aluminum.One needs to be able to moniter it.
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