monkeymoped Posted May 12, 2007 Report Share Posted May 12, 2007 i've cracked my chain stay twice on the same side close to the bottom bracket, and was just wondering if its worth gettinng it welded or not ??????if not i'm in the market for a new frame Quote Link to comment Share on other sites More sharing options...
basher Posted May 12, 2007 Report Share Posted May 12, 2007 A weld is strong than the material its self and thats why frames never crack on a weld. So yeah its worth welding i would say. What frame is it btw. Quote Link to comment Share on other sites More sharing options...
Shaun H Posted May 12, 2007 Report Share Posted May 12, 2007 A weld is strong than the material its self and thats why frames never crack on a weld. So yeah its worth welding i would say. What frame is it btw.Yeah they do. Quote Link to comment Share on other sites More sharing options...
James Quigley Posted May 12, 2007 Report Share Posted May 12, 2007 I've cracked 2 frames, both on the welds.Had one re-welded (professionally) and it just cracked again under the new weld.Just remembered I crack a Pashley on the chainstay (not on a weld) and had it welded and it was solid after that, so you might be okay. Quote Link to comment Share on other sites More sharing options...
spode@thinkbikes Posted May 12, 2007 Report Share Posted May 12, 2007 I've had welds crack, had them rewelded on the weld and they have cracked again very quickly.I found the only way to stop it was to have a plate welded on. Move the stress up to a part of the frame that isn't as weakened.. Might not be an option for you though.... Quote Link to comment Share on other sites More sharing options...
Muel Posted May 12, 2007 Report Share Posted May 12, 2007 I had my t-poo welded three times, each time I would build it back up, test it on the road for five minutes doing backhops and then it would crack again.Pay to get it done by someone who welds aluminium for a living, I got it done by a bloke who is a welder, but a steel welder. Quote Link to comment Share on other sites More sharing options...
monkeymoped Posted May 12, 2007 Author Report Share Posted May 12, 2007 might get a small plate welded on to make it stronger till i can get a new frame Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 12, 2007 Report Share Posted May 12, 2007 If you're going to get it welded, it needs to be heat-treated again if it's an aluminium frame. If you don't, it'll last for even less time than a re-welded frame will anyway... Quote Link to comment Share on other sites More sharing options...
Muel Posted May 12, 2007 Report Share Posted May 12, 2007 If you're going to get it welded, it needs to be heat-treated again if it's an aluminium frame. If you don't, it'll last for even less time than a re-welded frame will anyway...So thats where we went wrong... Quote Link to comment Share on other sites More sharing options...
Alan Posted May 12, 2007 Report Share Posted May 12, 2007 Would i be right in saying a re-weld will never be as strong as the the original matierial, Therefore, Only a waste of time and/or money?I piece of box section, or as mention plate should work, But it still won't be as strong. Quote Link to comment Share on other sites More sharing options...
basher Posted May 12, 2007 Report Share Posted May 12, 2007 (edited) Do you people who say its cracked on a weld means its actually crack through the middle off one or just following the weld next to it. Because it is a fact a weld is stronger than the metal and alot of cracked frames ive seen they dont crack a weld they just follow the line of it. Its also hard to weld aliminium and to do it correctly by anychance did most people just take it any random welders or a specialist because i had me tpoo done by a specialist and rode it for 3 month no problem. Edited May 12, 2007 by andy h Quote Link to comment Share on other sites More sharing options...
rider_01 Posted May 12, 2007 Report Share Posted May 12, 2007 yehhh man weld it even if it holds until you can get a new frame sure it will last sean Quote Link to comment Share on other sites More sharing options...
monkeymoped Posted May 12, 2007 Author Report Share Posted May 12, 2007 its not cracked on a weld its self but on the tubing Quote Link to comment Share on other sites More sharing options...
monkeymoped Posted May 13, 2007 Author Report Share Posted May 13, 2007 hope it will hold.........gutted i cracked it though Quote Link to comment Share on other sites More sharing options...
Anodised Adamant Posted May 13, 2007 Report Share Posted May 13, 2007 get it welded its well worth than forking out for a brand new frame Quote Link to comment Share on other sites More sharing options...
RobinJI Posted May 13, 2007 Report Share Posted May 13, 2007 Do you people who say its cracked on a weld means its actually crack through the middle off one or just following the weld next to it. Because it is a fact a weld is stronger than the metal and alot of cracked frames ive seen they dont crack a weld they just follow the line of it. Its also hard to weld aliminium and to do it correctly by anychance did most people just take it any random welders or a specialist because i had me tpoo done by a specialist and rode it for 3 month no problem.That's because the fillet of the weld is much thicker than the surrounding material. I have cracked brazing through the middle of it. Nothing to do with the material its self. Cracking along the edge of the weld where it meets the tubing is still cracking at the weld just at the edge of the weld, where the weld is thinner.If you get a gusset/plate/box section welded on well then it can be just as strong, due the the extra material, but it would have to be strategically placed so as not to just crack along where the box/plate/gusset is welded on.Anyway, my old Koxx cracked on the chain stay yoke, and I had it re-welded by a local place, they didn't even charge me for it and did a really good job. It lasted another good 6 months with me, another 2 or so with a mate, and then as far as I know is still going with the guy who bought it off him. It can be good to re-weld a frame, just depends where, if its on a plate/yoke then it should hold fine, tubing can be dodgy though, as it lacks the thickness. Quote Link to comment Share on other sites More sharing options...
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