Maintenance & Technical > KX500 Original

Winter project

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don46:

--- Quote from: cyclepsych0 on October 07, 2007, 03:01:51 PM --- 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

--- End quote ---

The rear mounts on each motor are the same, the 450 has a 17mm pivot bolt. I use the 500 radiators on all my conversions, it's easier to weld tabs on the frame to accept the 500 radiators than to try to re-plumb coolant lines.

gowen:
Don46, if I had the welding skills you have, I'd have built me one yesterday. I just don't trust myself with aluminum. I have a hard time welding steel as it is, just isn't my gift.

Awesome bike. I may just go ahead and get me the parts, I still have a handful of 500 parts leftover. Maybe I could do a trail and error.

FuriouSly:
Don46....  looks pimp my friend.  Have fun looking cool and one off!!! 

Sly

don46:

--- Quote from: gowen on October 09, 2007, 01:45:27 AM ---Don46, if I had the welding skills you have, I'd have built me one yesterday. I just don't trust myself with aluminum. I have a hard time welding steel as it is, just isn't my gift.

Awesome bike. I may just go ahead and get me the parts, I still have a handful of 500 parts leftover. Maybe I could do a trail and error.

--- End quote ---

Its suprising what you can do, if you really try, I'm a self taught aluminum welder, and admittedly, there was alot of garbage before I had confidence in my abilities, even so, I gusseted the areas that were cut. building these bikes isn't that difficult, more time consuming than anything, trying to figure out how to make the 500 stuff work in different frames. IMO the airbox and pipe are the 2 items that are time consuming and really suck. I must be getting smarter, this time I made a pattern for the airbox mod, and bought the SH pipe.


--- Quote from: FuriouSly on October 09, 2007, 03:24:25 AM ---Don46....  looks pimp my friend.  Have fun looking cool and one off!!! 

Sly

--- End quote ---

Thanks Sly, I don't ride as much as I used to, and when I do I usually ride a 250f. I build them for my son to ride/compete, thats where the enjoyment is for me.

FactoryPhil:

--- Quote from: don46 on October 09, 2007, 07:56:33 AM ---I build them for my son to ride/compete...

--- End quote ---

Nice dad! My dad couldn't understand why I kept wanting bigger streetbikes when I was younger. He thought 90cc was plenty since that is the biggest one he had.

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