Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)
How well do you like your KX250F/K5 conversion
stevea100m:
I would save the yoke and do it like im doing my build so you don't haveve to make your own
sandblaster:
I considered that.
However, I like the looks of the clean unadulterated frame tubes.
It was not a matter of function, only looks :-)
sandblaster:
Ordered the frame rails today from JFAB.
THANKS!
sandblaster:
1-12-11
Ok, I've been really busy and have not been able to do much to the bike.
I did manage to do a bit more today.
Just for grins I went to mount the Swing arm to the engine and frame.
Guess what? It does not fit.
The engine cases measured 94.3MM or 3.713".
The inside to the inside of the swing arm bushings when pushed toward the center as they would be when mounted measured 93.95MM or 3.699".
That leaves a interference fit of .35MM or .014".
My solution was to remove material from the Collars that are on the outside of either side of the swing arm.
The book shows that they are 6MM thick.
However, I measured them at 5.95MM or .234" thick.
I precision ground (Bench grinder and a 17MM rod) each to 5.59MM or .220" thick.
Everything fits together nicely.
These Collars are hard anodized so, I may have to have them anodized again depending on how fast the ground soft aluminum surface wears.
My next project is to check the swing arm to right engine case clearance through it's full range of travel as I believe it may be a bit too tight and I may have to machine the swing arm a bit to make it fit correctly.
I wouldn't want to bottom out my suspension and crack my right engine case :cry:
livenlife699:
Looking good! I just drilled out my cases on sunday with a 43/64" and it was perfect, No fitment issues at all I was able to mock it in the frame with swingarm in about 15 minutes!!
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