Forks

[Friar-Tuck]

    Attack Performance's Richard Stanboli on Triple Clamps
Danger this may help, not promoting anything, basic explanation.
    http://www.youtube.com/watch?v=S7rrjnVMk-4
   Tuck\o/

[ShadeTreeFab]

thanks friar, those clamps were off the hook.

[Dutch-K5 Fan]

Searching around I found this http://www.rekluse.com/E-axles.html.

And the video give's a good explonation about it Fair-tuck.

Dutch

[Danger4u2]

Thanks Friar good video.  The Rekluse axle is a neat concept and it explains offset very well.  Thanks Dutch.

[Motorrad]

Shot am email off to emig racing.

Hello Gary
I am in the process of converting 08 kx450f forks to fit a 1991 kx500 
for desert racing
I know you do alot of press in stem change conversions.

Curious If you have one that will press into the kx450 triples To 
adapt to the kx500 head tube.

If not. Is it possible to get a set of triple clamps made to the kx500 
specs (offset and bar mounts). But with fork holes to accept the kx450 
forks
  thanks for everything

David Olsen

[Motorrad]

Responce

David,
 
We probably have or can make you one quickly, ( I need to look on Monday) a stem with a top clamp bushing that will work for this conversion.
 
Conversion stems are $150 and bushing are $30.
 
Let me know if you need it...
 
Gary

[Motorrad]

Forgot to ask

Jerry is this somthing you would like to try and make??  Should be pretty easy, just need a stem with the same press measurements at the lower as a 450 with the rest being the same as a 500.... and a bushing for the top to clamp...   Right??

I am also worried about keeping the stock trail numbers...  As I dont want to change the way it handles too much.

Here is what I have come up with... missing a few numbers you guys may have knowldege of to piece everything together. (dont know if the stock triples off the 450's will mess things up without the missing numbers)   Need those to figure out if the axle location has been moved in or out...

Also if anyone has the numbers off a late Kx500 that would could help also (big fork version 03?)

I know that all the numbers are so close that if the triple offset is the same It will be a cake walk..

MY 1991 kx500
Trail:           4.57"
Head Angle:  27 Deg
Travel:         12.20"
Triple offest   22mm


06 KX450
Trail            4.6" (probly same)
Head Angle   27 Deg
Travel:        12.4"
Triple Offset  24mm

[jfabmotorsports.com]

David,
     I just did a similar deal to a Triumph a few weeks ago. This guy shows up with a 1976 Triumph something and a Harley springer front end that he bought on E-bay. Harleys have a 1' stim and the Triumph had a 3/4 I think. Anyway long story short, he's going down the road now.
    I would need to look at the two kaw parts but I think there is enough difference in the size of the stims that a bushing for both ends would be the easy way to go and just use the '91 stim. If not I could build the stim and upper bushing. The prices that you have do not seem out of line.
    I will measure the offset on a 91 today and get back to you. I think if the trail and head angle are the same then the offset has to be the same, assuming the forks are the same length.

[Motorrad]

Offset could still be differant.   

Being larger forks the axle location could be moved  further out and made up for in offset

I think an entire new stem is more kosher. (two bushings would always worry me while runnin 100 cross the desert)

[Motorrad]

Y 1991 kx500
Trail:           4.57"
Head Angle:  27 Deg
Travel:         12.20"
Triple offest.  22mm   


06 KX450
Trail            4.6" (probly same)
Head Angle   27 Deg
Travel:        12.4"
Triple Offset  24mm


Went ahead and ordered the stem from emig. 

Now I just need a front end off a 06-08 kx450f

[Motorrad]

Okay cant find it...  Need the Triple clamp offset off the last rendition of the Kx500 (2003 forks, forget the year spread)


I have been told my 91 has an offset of 22mm, and the 08 triples I have are 24mm.... wrong direction for a K5 (dont want slower steering yet)... Need to find out if I need to go with the 09 23mm or? before I pop for a scotts damper mount.

[Motorrad]

Crap... 22mm is stock for late Kx500.... This means Im 2mm in the wrong direction...   To add insult to injury.. Just measured the fork length... the Kx450 fork is longer... hence making it even worse yet in the wrong direction... I can fake some of that by raising the forks in the clamps...

so stock trail number of 4.57

Ill be somewhere around 4.48

this is all assuming the kx500 clamps and kx450 run the same angle.... as I cant find those numbers to save my llife

[Motorrad]

Now that I do some research... I may not be too bad..  as it may make the bike turn better... Not sure if the front end will try to wash out... we will find out..    I run a damper so it should counter the effects I was worried about (instabilaty at speed)...  Or It will handle like garbage... any input is good input...

Am I right on that?   Not sure im thinking straight.. My brain is toast at the moment. More offset will make it turn faster, yet less fast stability?

[Motorrad]

Just got a reply from Destry abbott about what they ran on their 500's

"I'm 99% sure we changed ours to 23mm off-set."

So this means Im golden... Shweeeet. Always good news when your told you screwed up in the right direction

Cant wait to pick up my forks and shock from Precision concepts tomarrow....

(was going to go racetech, till I found out they wanted $1600 for the custom rear shock I was planning on having them make)

[cbmoor]

Motorrad,what is it your doing are you fitting new triple clamps for newer style forks. The reason I was asking was I am thinking the same but using the crf 08 tripple clamps as it has the possibility of using the crf stearing damper and the crf tripple trees are 22mm only the 2008 ones but its getting someone to make a new stem. I seen on this site somewhere some one else using a crf tripple trees.