Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)
KXF 250 2007 for KX500AF
dangerous dean:
without sounding silly but have you tried welding it with different grade ally? is it tigged or migged ? if its cracked either side it usually mean the ally has got to soft through heat from the welding try welding it up wet rags either side to stop heat dissipation
edgar_kx3:
its tig welded. no i have not tried any other alum, but soon as i can get the old stuff cut out. think i gonna tried solid square stock, and mill it down on each end to fit inside the stock rails!. hope that works, if not i will replace the entire carriage!
Dutch-K5 Fan:
--- Quote from: edgar_kx3 on August 11, 2009, 12:03:53 AM ---its tig welded. no i have not tried any other alum, but soon as i can get the old stuff cut out. think i gonna tried solid square stock, and mill it down on each end to fit inside the stock rails!. hope that works, if not i will replace the entire carriage!
--- End quote ---
Thats what i've done with mine Y section. Then there's some material to weld with.
Dutchie
kxpegger:
--- Quote from: edgar_kx3 on August 11, 2009, 12:03:53 AM ---its tig welded. no i have not tried any other alum, but soon as i can get the old stuff cut out. think i gonna tried solid square stock, and mill it down on each end to fit inside the stock rails!. hope that works, if not i will replace the entire carriage!
--- End quote ---
Even with the same materials and filler rod welding aluminum is a little tricky. I used to be a certified stick welder back in the 70's before Mig/Tig welders were prevalent. We learned to weld aluminum with Oxy/Acetylene and it took a lot of practice not to produce a soft or brittle weld.
http://www.lincolnelectric.com/knowledge/articles/content/alum.asp
jfabmotorsports.com:
I would replace the frame cradle with one peace units all the way to the down tube. Welding a peace in like that is the easy way out and should never had been done. JFAB
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