2007 KAWASAKI KX250AF BUILD

[sandblaster]

Ah Ha!
It's been driving me crazy that nobody asked 
I'll get back to that later....

On the engine, yeah it's pretty clean but not as clean as it's gonna get.
I used three week old large glass and dirty water which cleans fast but not that sweet clean 
Before the engine get's rebuilt it will glow to perfection..

[sandblaster]

Another interesting point is the Y lines up perfectly with the exhaust and even the bottom motor mounts line up perfectly.
It took a bit of trimming a little at a time to get the right length where the bottom rails attach by the pivot pin area.
After all it's easy to take a little off at a time but a lot more work to add material 
And to think I have tossed many aluminum CR frames that I didn't have the titles to so I couldn't sell them...
I want to try the same thing for the KX500 engine and see how it works...

[Foxx4Beaver]

I want to try the same thing for the KX500 engine and see how it works...

I think a few of us'll be waiting for those results

[sandblaster]

The biggest problem I see is the additional height of the exhaust port.
But we'll see..

[umberto]

Will the CR cradle work with other years of the KXF frame, or just that version?  I know you see a lot of parts, just curious what your eyeball says.  Also, would you have any collecting dust at the shop? 

[sandblaster]

Ok, Ok, it's a 01 CR250 cradle 
Honestly this is one of the few KX450F frames I have got in so I don't have any others to compare with as I sold the others.
My guess is that many other years are close enough to work.
There is probably a few guys here on the site that know.
I have several CR frames of other years in stock so I plan on putting a eye ball on some of those others fairly soon.
Right now I don't have any extra's but that will change soon enough 
I have seen some 00-01 cr250 frames cheap on eBay but none cheap at the moment.
I know the 250 conversions aren't as popular as the 500's but I'm sure there are a few that can benefit from this method.

[RoostiusMaximus]

The cr250 2000/2001 are their own beast too. Odd rectangular tube that started on 97 but carried into 06 or so crf450 frames.

[sandblaster]

The amazing thing is how well that rectangular tube fits up.
I would never have guessed it.
My buddy Jason said you know, I think this cradle will fit right up to the KX450F frame.
And I'm thinking.... Pipe dream....
Then we got out a tape measure and it looked very promising.
So I said go for it.... 
We will be adding some additional bracing back where the carriage attaches by the pivot pin area.
Since Jason is going to be airing this thing out we don't want any strength issues.

[umberto]

Do the motor mounts line up pretty well?  The motor may not be in its final position, but it looks like the mounts are a bit short but really close.  Of course I remember one of your earlier pictures of the CR frame, and it looked spot on.

[sandblaster]

The bottom mounts are perfect.
The front mounts are off but there is plenty of room for a custom set of mounts like this.

[alward25]

nice

[sandblaster]

Jason is working on the mount in this pic

[sandblaster]

Head stay mounts are almost done



The rear frame rail to frame plate is done.



The front mounts are almost done..

[umberto]

You should weld up a bunch of these and sell them. It would make doing the conversion simple.  You could even give a price break to the guy who came up with the idea.   

[sandblaster]

Before it goes to weld we are gonna make templates of everything.
I really want to see if we can make this happen with the 500 engine.
I'm doubtful but you never know what a little tweaking might do 
I have no interest of making conversions for others as there is plenty of skillful people doing it.
But I will share what I learn and showing what you can do with some very basic hand tools and some elbow grease..