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post #1 of (permalink) Old 01-05-2003, 04:31 PM
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Cracked Sub-Frame

I have a 97 XR600R, the sub frame running from the swingarm up to the rear portion of the seat support has
a crack (chain side) running 3/4 of the way around it. The previous owner had passenger foot peg brackets welded on
and the crack starts at one of the welds. Does anybody have experience or suggestions on the best way to
repair this problem? Would re-welding it work? A replacement frame is not in the works at this time.
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post #2 of (permalink) Old 01-06-2003, 06:25 AM
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Re: Cracked Sub-Frame

I'd grind all that old [bleep] off first, do you have a arch, or wire welder? Not sure if the oll typical 60/13 would be a good idea or not. I'd reweld it, but take my time and be carefull doing it.




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post #3 of (permalink) Old 01-06-2003, 09:11 AM
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Re: Cracked Sub-Frame

Its going to need some type of gusset or it will crach again.... somthing like a shark fin should be OK.........
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post #4 of (permalink) Old 01-06-2003, 08:52 PM
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Re: Cracked Sub-Frame

Is the sub frame steel or alluminum?

If its alluminum, you will need to have it TIG welded. You could use MIG if you have a spool gun, but most do not.

If its steel, just have it MIG welded. You can slip a sleeve inside the tubing or outside and weld it all up. will be strong as hell.

Yeah ditch the pegs grind it clean.
post #5 of (permalink) Old 01-07-2003, 03:56 AM
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Re: Cracked Sub-Frame

Thats a steel sub frame. But there pretty thin. I'd gind it down and have it heliarced. And use kyron's idea and weld another light piece of sheet metal around the weld. Then just use some touch up paint when your done.





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post #6 of (permalink) Old 01-07-2003, 04:50 PM
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Re: Cracked Sub-Frame

I found a shop that has a tube bender and a very good rep. We are going to replace the whole tube.
I'll let you know how it works out. Thanks for all the suggestions.

Pegs are gone.
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