'76 KZ900 (ZRX1200R) Build

Richie7 wrote: Yes, I plan on pressing out my sporty triple tree stem and transplant on the Zrx triple lower. What I'm mainly interested in knowing is how to make HD hub work in ZRX forks/brakes setup. Thank you for replying though.

Richie,

It is in the build thread, (Pages 17-21) but it will greatly depend on what front HD hub you are running. The hub I used is the 77-84 Narrow Dual Disc hub and then machined it to accept 47x25 roller bearings then used 1/4" spacers to get disc alignment proper. Then you still need to cut an inner bearing spacer and two outer bearing spacers. There are numerous factors you need to consider to safely adapt the front wheel.

"So the following hubs were used:

Front: 77-83 Harley Davidson Dual Disk Narrow Glide (FXR & FXH?) - I bored out the bearing pockets to 47mm to press in 47 x 25 x 12 sealed ball bearings and cut a new inner spacer to fit the 25mm front axle from a ZRX1100/1200. .250" spacers were made to get the disk spacing proper. The rotor spacers will need to be notched to fit the speedo drive collar. A custom made axle spacers.

Rear: 2000 + Wide Glide Aluminum "Spool" Hub - Dual Disk - Bearings swapped from a 52 x 25.4x12 to a 52x20x12 and new inner spacer made. A custom aluminum rear rotor adapter made along with a custom Cush drive using Ducati and Suzuki parts."

Cory

NakedFun wrote:

Richie7 wrote: Yes, I plan on pressing out my sporty triple tree stem and transplant on the Zrx triple lower. What I'm mainly interested in knowing is how to make HD hub work in ZRX forks/brakes setup. Thank you for replying though.

Richie,

It is in the build thread, (Pages 17-21) but it will greatly depend on what front HD hub you are running. The hub I used is the 77-84 Narrow Dual Disc hub and then machined it to accept 47x25 roller bearings then used 1/4" spacers to get disc alignment proper. Then you still need to cut an inner bearing spacer and two outer bearing spacers. There are numerous factors you need to consider to safely adapt the front wheel.

"So the following hubs were used:

Front: 77-83 Harley Davidson Dual Disk Narrow Glide (FXR & FXH?) - I bored out the bearing pockets to 47mm to press in 47 x 25 x 12 sealed ball bearings and cut a new inner spacer to fit the 25mm front axle from a ZRX1100/1200. .250" spacers were made to get the disk spacing proper. The rotor spacers will need to be notched to fit the speedo drive collar. A custom made axle spacers.

Rear: 2000 + Wide Glide Aluminum "Spool" Hub - Dual Disk - Bearings swapped from a 52 x 25.4x12 to a 52x20x12 and new inner spacer made. A custom aluminum rear rotor adapter made along with a custom Cush drive using Ducati and Suzuki parts."

Cory

Cory,

I will go over the thread again and check out your specs/pics. But, knowing specifically which hub you used and that it has enough meat to bore out and accept ZRX bearings/axle is a huge help for me. I will probably end up re-lacing the stock sporty rear hub and use it in a stock swingarm paired with modern shocks. But that's also good to know for the rear hub option as I have been planing to do a modern dual shocks set up on Z1R or Z1000R someday. Thank you for sharing! I really like your build!

So long time - no update! Hurricanes and Trucks have gotten in the way. However, got some time to play around a bit. Started to fit up the battery box, the remote master cylinders, and I got back all my goodies from Joe Hooper.... So today did a bit of plumbing. Remote masters needed a clean way of supplying the fluid to masters. So I came up with this.

First, found some various billet clamps on Ebay. Used A-arm brake line clamps from Lone Star racing to mount the ZX14R master cups.

Then I found a dual line clamp off Ebay that had one 11mm and 8mm clamp hole. I then got a hold of .035' wall, 7/16" aluminum tube to make up a aluminum fluid rail for both masters. Put it all together and you get close......

Then needed to run some tube. Strategic cuts in the stock ZX14R rear brake tubes, and I got the ability to make both ends connect. Just had to offset the tubes a bit.

Finally, a bit of just "see-in" if everything cleared the seat pan and body work.

That's it for now......

Cory

BEAUTIFUL
Wayne

Thanks Wayne!

Cory

So begins the fun part....Did I mention I like circuit design and DC circuit building.....

Cory

awesome....coming along. cant wait to see it finish.

Nearly there Cory :lol:
Looking great, I am very interested in the installation of the Dyna.
Have the same system waiting in a box and will be starting the rebuild soon.

Eric

So been collecting lots of parts getting ready to put the engine back together one last time... in the meantime I have been working on the electrical and other doodads. Been fighting to try and get the right look and gave up on engine turning and went to polish and clear. Then the clear powder coat went bad due to oven in a cold garage.

My two axis milling vise and my drill press wasn't big enough to do the whole patter and freehand with grid marks didn't work either. Gave it one last try and got some time on a mill at work.....

Well, though not perfect, they will work.... still need to clear coat yet.

Cory

nice work :evil:

leon

531blackbanshee wrote: nice work :evil:

leon

Thanks Leon. About time this saga and build ended! Very close now....

Cory

Nice to see the project is still alive

Eric