Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)

It fits better than I thought....

(1/1)

cutting torch:
'87 KX500 in a '92 KX250 frame:





The swingarm pivot and bottom case mounts line up, and leave the exhaust port pretty well placed in the frame, although the top pipe springs might be a bit tight. I'll have to cut the forward case mounts off the frame and relocate them, but thats easy.

I do wonder though, as much as a bike engine is bolted to the frame, is the engine helping the frame, or is the frame helping the engine?
 :?

torch

sintax:
yea, i felt the same thing when i first got my 500 engine in the 250 frame. Just kinda looked like it was supposed to be there. Looks good! Wrap her up. Hopefully it does not take you 3 months like it took me.

cutting torch:
3 months? Surely you jest! I'm thinking more like a year or more.

My goal with this project is have the end result as close as I can reasonably get to a new bike in appearance and function. That means there will be a lot of resto work added to the load, and also some suspension revalving.

torch

AJ:

--- Quote from: cutting torch on March 03, 2009, 01:07:29 PM ---'87 KX500 in a '92 KX250 frame:





The swingarm pivot and bottom case mounts line up, and leave the exhaust port pretty well placed in the frame, although the top pipe springs might be a bit tight. I'll have to cut the forward case mounts off the frame and relocate them, but thats easy.

I do wonder though, as much as a bike engine is bolted to the frame, is the engine helping the frame, or is the frame helping the engine?
 :?

torch

--- End quote ---

the engine,  in this type of frame,
is certainly used as a intregal part and brace in the frame.


think of it,  as a 65 pound frame brace.
with the frame specifically designed for using it.


   

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