'76 KZ900 (ZRX1200R) Build

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Re: '76 KZ900 (ZRX1200R) Build

13 Sep 2016 09:31 - 13 Sep 2016 09:41
#742077
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
2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900
Last edit: 13 Sep 2016 09:41 by NakedFun.

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Re: '76 KZ900 (ZRX1200R) Build

13 Sep 2016 12:24
#742088
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!
1976 KZ900A4
98 CBR900RR Front End
01 GSXR1000 Swingarm + Wheel
Wiseco 1015cc Piston Kit
Dyna ignition + Accell Coils
VM28 Pumpers

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Re: '76 KZ900 (ZRX1200R) Build

23 Oct 2016 17:57
#746054
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.

[IMG


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......

[IMG

[IMG

[IMG


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.

[IMG


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

[IMG


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

Cory
2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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Re: '76 KZ900 (ZRX1200R) Build

24 Oct 2016 14:58
#746108
BEAUTIFUL :)
Wayne
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
Home built KZ1000 turbo setup

www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build

www.kzrider.com/forum/11-projects/532489-74-z-makeover

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Re: '76 KZ900 (ZRX1200R) Build

24 Oct 2016 15:58
#746115
Thanks Wayne!

Cory
2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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Re: '76 KZ900 (ZRX1200R) Build

28 Oct 2016 17:09
#746402
So begins the fun part....Did I mention I like circuit design and DC circuit building.....

[IMG


Cory
2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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Re: '76 KZ900 (ZRX1200R) Build

30 Oct 2016 12:41
#746574
awesome....coming along. cant wait to see it finish.
1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project

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Re: '76 KZ900 (ZRX1200R) Build

31 Oct 2016 11:13
#746712
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

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Re: '76 KZ900 (ZRX1200R) Build

05 Feb 2017 18:53
#753705
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.

[IMG


[IMG


[IMG


Cory
2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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  • 531blackbanshee
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Re: '76 KZ900 (ZRX1200R) Build

08 Feb 2017 07:52
#753897
nice work :evil:

leon
skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!

billybiltit.blogspot.com/

www.kzrider.com/forum/5-chassis/325862-triple-tree-custom-work

kzrider.com/forum/5-chassis/294594-frame-bracing?limitstart=0

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Re: '76 KZ900 (ZRX1200R) Build

08 Feb 2017 09:23
#753913
531blackbanshee wrote: nice work :evil:

leon

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

Cory
2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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Re: '76 KZ900 (ZRX1200R) Build

08 Feb 2017 09:31
#753916
Nice to see the project is still alive :)

Eric

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