Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)
Dutch 500AF Conversion 250KXF 2009
mxaniac:
I did it myself. Here is a point of reference you can review: http://www.eastoncycling.com/bike/wp-content/uploads/2010/04/fab_instructions-7005_6061.pdf
jBernard:
ha, ive read that pdf a few times before, funny you mention it.
did you do 7 series on your rails and just age? or do you have access to an oven that can do solution?
mxaniac:
Well since my frame is broken perhaps I ain't such a smart feller afterall but I just artificially aged my frame in an oven at work. The ovens at work won't do solution treatment. I would recommend waiting until your wife is out of town if you want to try and do it at home. I'm assuming that Kawasaki also used 7005, I'm not positive on that but there is plenty of speculation that it is. I'm pretty sure I could identify the alloy with our FTIR at work but it never occured to me to do that at the time.
ToomanyKaws:
Nice build. :-) I am having a second frame modified now. Was at the guys shop yesterday and asked the guy about the alum you are using. He said you can't. Will break. Doesn't want to be welded. Its ok for a static part. A bracket, etc. Not as a structure. This guy is old and has been machining and welding metals for 50 years. Then he pulled some alum out of a box he is making stilts out of. Like you see the characters walking around Disney on. He makes them for a company who sells them to all of the Disney parks in the world. Also showed me a few other grades of alum on the rack and what each types strong points are. So atleast I asked and learned.
hulkteam476:
Well,
when I putted my frame crf 450 2004 spectrometer I had not removed the "alumine" layer chemically, but the composition was close to the 6061.
To enter into details: When you weld the 6061 t6, it loses itscharacteristics and becomes close to the "t0", so you should make a quenching and an income, particularly by gravity or projection by dropping your piece into water after bringing it to a temperature of 529 -540 ° C max. Normally this heater must be homogeneous, so in an oven. For me, oxyacetylene torch.
Something else: the physical composition of the 7005 is close to the 6061 so it is a good alloy for this application (frame) which has a slightly higher density. But the 7005 does not have a temper and regains its normal state in the open air, they have (the 6061 and 7005) an excellent welding behavior unlike the 7075 which is not weldable to me (heresy). Test weld a piece out of your frame and makes a stress test ( tensile ) has your welding.
Thx
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