Maintenance & Technical > KX500 Original

Winter project

(1/2) > >>

don46:
I had planned on doing a aluminum framed 500 this winter, so I've been gathering all the parts I was going to need. I realized I had all the parts and decided I'd start my winter project, next thing I knew, it was done. It took a couple of weeks only working on it some evenings and weekends.

I'd like to give a shout to AJ and Service Honda for the pipe, it wasn't a direct bolt on, but sure was alot easier than modifying a KX pipe. My impression of the pipe, it seems to have more bottom end than the Pro Circuit, either the modified Honda or the K5 pipe, but then that has been my impression all along FMF= bottom end PC= mid top end.

Anyways heres a pic.

cyclepsych0:
 Lookin' good!! How does this conversion rank compared to your others as far as difficulty goes? Are the 250 2-stroke still the easiest? (Never mind the aluminum vs. steel frames) I was just curious as to how the 500 mill fits into this frame. Less amount of fab work or more?
 Again, great job! I'd love to see more photos if you've got 'em!

Arigato:
Awesome!  What bike did you start with 250 or 450?

don46:

--- Quote from: cyclepsych0 on October 07, 2007, 11:17:09 AM --- Lookin' good!! How does this conversion rank compared to your others as far as difficulty goes? Are the 250 2-stroke still the easiest? (Never mind the aluminum vs. steel frames) I was just curious as to how the 500 mill fits into this frame. Less amount of fab work or more?
 Again, great job! I'd love to see more photos if you've got 'em!

--- End quote ---

I can only speak for the 99-02 250 chassis, I'm not sure about the newer bikes, The 250 2 stroke chasiss is probably the easiest to fit the motor into, the swingarm mod is kind of a pain, but the airbox works. The 4 stroke chassis, the swingarm fits (after drilling the back motor mount to 17mm) but, the down tube has to be totally modified to accept the 2 stroke motor, the airboot needs to be changed (the stock 4 stroke air boot is too restrictive IMO) I use the 99-02 complete air tract. So to answer your question they all have their issues, I guess it depends on what you want to deal with (I hate the airbox mod, its a real pain) they all have the quirks. I still maintain that I could do a 250 2 stroke in a weekend with not much trouble.

Arigato,

this is a 450 chassis, I think a 250f chassis would'nt be to much more trouble.

There is so much room in the engine compartment, even more than the 500 chassis. The thing rolls so free, I don't know why but it is noticeable.

cyclepsych0:
 I kinda figured on the down tube. The 500's center exit exhaust needs to comeout somewhere. :-D.
 Interesting though, that the swingarm doesn't need narrowing like the 250's. Are the rear mounts of each engine the same width? Or does the 500 motor actually require shimming/spacing to take up the gap? Is the 450 pivot shaft 17mm like the newer 250's? Or larger yet?  450 or 500 radiators?

Sorry for the rambling questions. These kinds of projects get me all worked up!! :-o :-o

Navigation

[0] Message Index

[#] Next page