Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)

Broken AF frame - Do you know of any?

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mxaniac:

--- Quote from: sandblaster on June 18, 2014, 04:10:57 PM ---It may well be that thicker walled tubing is needed, but I would sure like to see the front head stay with the stress analysis ran on it..

--- End quote ---

Can you get your engine in and out?  With all the cases on?  If i recall correctly the water pump is always part of the problem getting it out.

sandblaster:
Never tried it with all the case covers on.
I have tried it as you see it and no problem.
I'll see if I have some extra case covers around and try it.

jBernard:
awesome job modeling the frame. very impressive!
+1 on adding a front head mount and re-running the stress test. I'm really hoping on that showing some different results and taking some load right below the Y as that seems where most are breaking.
I'm running square tubing on mine  :| , so making a front mount right now to give me a little insurance. + heat treating it also.

mxaniac:
For the purposes of discussion only one could surmise the front head stay significantly reduces the stress in the problem area, but not enough to be considered the only fix.

jBernard:
awesome. thank you for doing that.

odd that by the way the stress is showing, it almost looks like its a shear force between the headstay and the top motor mount. like they are moving separately (headstay mount is moving more forward than the top motor mount).

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