YZ USD Forks on a KDX
Posted: 10:17 am Mar 03 2007
I've nearly what I need for the YZ forks install on my 220 - they're gonna work fine!! 'Hope to get things put on next weekend - waiting on fork guards and 7/8" bar mounts to arrive:
'98 YZ125 USD Forks: KYB 46mm forks, no "bladder". Bottom clamp stem hole matches KDX bottom clamp stem hole. Stems are very close to being the same length so additional spacers will be minimal or not needed. There's about 0.075" gap between KDX stem and YZ upper clamp hole that will be resolved with shimming. MX-Tech rebuilt my inner cartridges. I removed 6 24mm shims out of each base valve to bring the total to 4-24mm, 1-22mm, 1-20mm, 1-18mm, 1-16mm, 1-12mm (all 0.5mm thick, 8mm ID). I replaced the seals/wipers/bushings. Everything cleaned/flushed and put back together. I've got 5wt fork oil with 100mm level to start with. Currently I have the stock springs - 0.41 kg/mm.
'96 YZ250 wheel: Nice wheel purchased off of ebay with a gold Talon hub. Bearings feel good.
'02 YZ250F axle: Fits great. I'll need to make up a small spacer but axle fits the forks and the wheel.
I assembled the forks/axle/wheel and tried on the KDX caliper - fits great!
I'll need to fab a steering stop much like what others have done, pretty straightforward.
I'll have to be creative on mounting the fender as the holes don't line up, but I've got some ideas . . .
I'll be doing some stem swapping this Friday - we've got a press at work so that comes free!!
I'll have pictures / methods / costs on the site in time
'98 YZ125 USD Forks: KYB 46mm forks, no "bladder". Bottom clamp stem hole matches KDX bottom clamp stem hole. Stems are very close to being the same length so additional spacers will be minimal or not needed. There's about 0.075" gap between KDX stem and YZ upper clamp hole that will be resolved with shimming. MX-Tech rebuilt my inner cartridges. I removed 6 24mm shims out of each base valve to bring the total to 4-24mm, 1-22mm, 1-20mm, 1-18mm, 1-16mm, 1-12mm (all 0.5mm thick, 8mm ID). I replaced the seals/wipers/bushings. Everything cleaned/flushed and put back together. I've got 5wt fork oil with 100mm level to start with. Currently I have the stock springs - 0.41 kg/mm.
'96 YZ250 wheel: Nice wheel purchased off of ebay with a gold Talon hub. Bearings feel good.
'02 YZ250F axle: Fits great. I'll need to make up a small spacer but axle fits the forks and the wheel.
I assembled the forks/axle/wheel and tried on the KDX caliper - fits great!
I'll need to fab a steering stop much like what others have done, pretty straightforward.
I'll have to be creative on mounting the fender as the holes don't line up, but I've got some ideas . . .
I'll be doing some stem swapping this Friday - we've got a press at work so that comes free!!
I'll have pictures / methods / costs on the site in time