Hi there... With some encouragement and details from Thrux-Tonup (and others) regarding the Honda CBR600F3 cartridge fork conversion, I went ahead ad did it!
I won an ebay auction for a nice complete F3 front end assembly, fork legs w/ internals, sliders, triple trees... the whole shebang for under $200 delivered. The forks appear to have had little use, good overall condition. BTW...you only need the tubes & internals...the F3 sliders are not used.
So... I tore into the F3 forks, and removed the fork tubes, bushings & internals from the lower sliders as an intact assembly.
Here are some details that are fairly important:
1) The lower screw that secures the damper to the slider is a different size on the F3 than the Triumph screw. Use the F3 screw when assembling the hybrid fork (meaning use of Triumph sliders on F3 legs & internals) Also, be sure to use the Triumph copper washer for a seal, and replace if worn
2) Use the F3 lower (split) bushing on the F3 fork leg. Replace if worn per Honda specs, i.e. teflon coating is worn away.
3) Use the Triumph upper (non-split) bushing, washers, and seals in the Triumph legs.
4) Fill each leg with 460ml fork oil. I used 15W, and it might be a bit thick but I like the increased damping
That's about it! Not too hard really. The F3 legs are about 1.3" longer than the Triumph legs, so they must stand proud of the upper triple clamp. I mounted my clip-ons up there and have a much more comfortable bar position.
The F3's have adjustable spring pre-load. I set it on the lightest setting for now but may tighten it up a bit. The forks also offer adjustable rebound damping. I have it set on the minimum setting and it feels just about right.
In looking at the workshop manuals for the Triumph and the F3, the exploded view drawings are confusing. I believe the drawings are actually drawn incorrectly, but hey...I only do that kind of thing for a living.
I made a composite drawing using AutoCAD of the two separate drawings, and labeled the parts either (H) or (T) for either Honda or Triumph parts that are placed in the new assembly. I did not spend too much on it so don't look too closely!! Also, any input on the drawing is appreciated in case I mislabeled something or perhaps got the order wrong. These parts really can only go together one way, so the only thing that might throw you is if you are missing some parts.
Here's the drawing (jpg) You can PM me if you would like a PDF with much better clarity. (Photobucket will not accept PDF's currently...)
BTW, I just took the bike for a shake-down cruise today over to the 7-11 for some gas & munchies. Everything felt fine...no noises, nice firm ride with no wallowing, overall it feels good.
I'll give it a better test report on Laureles Grade later this afternoon and let you know the verdict on handling effects.