2011 kx250f conversion w/ 1988 kx500 (Newbie)

[don46]

Bikes look good, and should make a great conversion. The 250f may be an 11 but the forks are for sure not off an 11, the 11 had the titanium nitrade coating on the fork tubes and had the spring adjuster  on one fork and the compression on the other, both were anaodized blue, in fact they look to be KYB from an 04-05, 06 on used Showa forks and they looked different. Those forks will probably work better than the 11 forks, since the 11 only had 1 spring you may not have been able to get a heavy enough one

Yea I knew that going in purchasing the bike.. "Sadly" he did include the forks from an 08 that are the ones pictured.. i found some with tripple clamps on ebay and bought those they are off a "2010 kx450f" and should bolt right on

I would stay with the 08 Showa forks, and try to find a shock off a 250f as well, I have taken the KYB's off and installed Showa on my AL framed 500, personally I like the Showa's better than the KYB, in fact that is a mod alot of serious racers do/did to their 450's, the 12 450 forks are pretty good, not sure how the 13's are going to be, ours has sat for a couple of months and didn't lose any air.

[LundMx]

thanks for the info! your making be feel better about substituting for the time being even if it be permanent. i was going to get a rear shock from the 09 kx450 just because a heavier spring

[cmotodad]

If you do not mind me asking, where did you find the Hinson basket?

[LundMx]

If you do not mind me asking, where did you find the Hinson basket?

Well its a long story, but to cut to the chase, this bike is going to debut at this years pro nationals at glen helen raceway piloted by Pro rider Shawn Wynne, i have solicited the bike for sponsors and paul from hinson sent me the clutch kit. I can find the part number for you if you like!

[cmotodad]

When I called Hinson, the response I got was they are discontinued. I think you need 2, one for a backup, and it can go to me.

[LundMx]

I just got the email back from Paul, he said yes they are no longer produced but still in rotation through a couple company's that still have them in n.o.s. "new old stock" he said he would find me a back up if i broke the one i have but then assured me that would be quite a feat!

[don46]

I have some more sad news for you, the forks pictured, as I said previously looked to be 04-05 250f, they are in fact of that vintage, they were also used on the 250 up to 07. Looked at my 08 Showas, they are different, yours are KYB.

Sorry.

[LundMx]

interesting, i know it says on the bottom aluminum piece at the bottom of the fork. now you have me interested, im going to check it out when i get home :/

[brooksie]

I just got the email back from Paul, he said yes they are no longer produced but still in rotation through a couple company's that still have them in n.o.s. "new old stock" he said he would find me a back up if i broke the one i have but then assured me that would be quite a feat!

I've just been assembling my engine and noticed that it has a Hinson clutch basket. So I started having a closer look at things. The primary drive gear is 16mm wide. The teeth on the basket are 12mm wide. Yet they only engaged about 11mm. Seems odd having such a strong primary drive gear and waste that strength by not using iT and also not permitting the clutch basket engage the full width of its teeth. Has anybody else noticed this?

[LundMx]

I just got the email back from Paul, he said yes they are no longer produced but still in rotation through a couple company's that still have them in n.o.s. "new old stock" he said he would find me a back up if i broke the one i have but then assured me that would be quite a feat!

I've just been assembling my engine and noticed that it has a Hinson clutch basket. So I started having a closer look at things. The primary drive gear is 16mm wide. The teeth on the basket are 12mm wide. Yet they only engaged about 11mm. Seems odd having such a strong primary drive gear and waste that strength by not using iT and also not permitting the clutch basket engage the full width of its teeth. Has anybody else noticed this?

ill check that out on my side when i go to assembly

[LundMx]

I extracted the "y" peice from my down tube today.. It came out pretty dam good i think!

[LundMx]

So i made more progress today  i made my measurements for the cut to move up the "Y" piece, so check it!!!


I realized that i needed to cut out A LOT!



But after a lot of trimming slowly and precisely I finally got a fit that was like a glove!




And what do ya know  !!





 So this weeks challenge is going to be bending the square tubing for the engine cradle, i need to make some more mounts obviously, but i smell premix in my soon future!

[Motorrad]

almost like it was ment to be   

[LundMx]

Hey motorad, is jfab still making products? Im going to need help with these frame rails

[Motorrad]

Hey motorad, is jfab still making products? Im going to need help with these frame rails

last I checked....  You have to call him at the shop though.

His phone number is at the beginning of any of his posts in the vendors section.


Report back