Author Topic: 2011 kx250f conversion w/ 1988 kx500 (Newbie)  (Read 54815 times)

0 Members and 1 Guest are viewing this topic.

Offline don46

  • Hero Member
  • *****
  • Posts: 1,140
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #15 on: March 08, 2013, 05:15:58 AM »
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.
Live today, for tomorrow may never come

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #16 on: March 08, 2013, 06:23:31 AM »
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 :|
LundMx

Offline cmotodad

  • Full Member
  • ***
  • Posts: 217
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #17 on: March 08, 2013, 09:05:36 AM »
If you do not mind me asking, where did you find the Hinson basket?

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #18 on: March 08, 2013, 12:13:18 PM »
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!
LundMx

Offline cmotodad

  • Full Member
  • ***
  • Posts: 217
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #19 on: March 08, 2013, 03:24:15 PM »
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.

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #20 on: March 09, 2013, 01:57:06 PM »
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!
LundMx

Offline don46

  • Hero Member
  • *****
  • Posts: 1,140
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #21 on: March 11, 2013, 08:03:34 AM »
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.
Live today, for tomorrow may never come

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #22 on: March 14, 2013, 05:07:03 AM »
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 :/
LundMx

Offline brooksie

  • Full Member
  • ***
  • Posts: 90
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #23 on: March 16, 2013, 02:11:49 PM »
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?

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #24 on: March 18, 2013, 05:08:57 AM »
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

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #25 on: March 21, 2013, 03:11:54 PM »
I extracted the "y" peice from my down tube today.. It came out pretty dam good i think!
LundMx

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #26 on: March 24, 2013, 10:40:34 AM »
So i made more progress today  :lol: 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  :lol:!!





 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!
LundMx

Motorrad

  • Guest
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #27 on: March 24, 2013, 01:55:10 PM »
almost like it was ment to be   :-o

Offline LundMx

  • Full Member
  • ***
  • Posts: 113
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #28 on: March 24, 2013, 04:51:10 PM »
Hey motorad, is jfab still making products? Im going to need help with these frame rails
LundMx

Motorrad

  • Guest
Re: 2011 kx250f conversion w/ 1988 kx500 (Newbie)
« Reply #29 on: March 24, 2013, 05:07:04 PM »
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