KZR's Bikes of the Month for 2024

'76 KZ900 (ZRX1200R) Build

  • mark1122
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04 Aug 2012 13:41 - 04 Aug 2012 13:42 #540693 by mark1122
Replied by mark1122 on topic '76 KZ900 (ZRX1200R) Build

NakedFun wrote: More pad material in contact with the rotor. Now some claim the larger 6 pot calipers flex more... but I haven't seen any data to support that.

Cory


but does that extra pad, translate to better braking?? wouldnt u have less psi with more surface area.
it seems that the new bikes have abandoned the 6 pots in favour of the 4 pots. or an i mistaken ??

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

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~ (k) / (z)
Last edit: 04 Aug 2012 13:42 by mark1122.

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04 Aug 2012 14:20 #540698 by NakedFun
Replied by NakedFun on topic '76 KZ900 (ZRX1200R) Build

mark1122 wrote:

NakedFun wrote: More pad material in contact with the rotor. Now some claim the larger 6 pot calipers flex more... but I haven't seen any data to support that.

Cory


but does that extra pad, translate to better braking?? wouldnt u have less psi with more surface area.
it seems that the new bikes have abandoned the 6 pots in favour of the 4 pots. or an i mistaken ??


Well it depends on the volume of the 6 pots versus the 4 pots. The volume of the 4 pots is actually larger I believe due to each piston being much larger, but 4 vs. 6. It also depends on what your master can develop with how much force you can exert. Fact of the matter is the new radials are 4 pistons but are lighter which is kinda the name of the game. You can pull stoppies with both the four and the six. The sixs are heavier and more expensive, and the fours can apply enough stopping power, why would a manufacturer choose them? It really is a personal preference and more about feel and how much force a rider can actually apply to a lever.

Cory

2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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  • testarossa
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05 Aug 2012 21:49 #540904 by testarossa
Replied by testarossa on topic '76 KZ900 (ZRX1200R) Build
I'm using the six piston Tokicos from a Hayabusa on my KZ. They stop just fine. I figure if they can haul a Busa down from 180 they should be plenty for my KZ. Plus I just like the way they look.


1978 KZ1000 A2 Click--->Build Thread
2004 ZX-10R
2007 Harley Sportster 1200
2020 Harley Street Glide Special
Angola, IN

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06 Aug 2012 00:56 #540927 by 79MKII
Replied by 79MKII on topic '76 KZ900 (ZRX1200R) Build

testarossa wrote: I'm using the six piston Tokicos from a Hayabusa on my KZ. They stop just fine. I figure if they can haul a Busa down from 180 they should be plenty for my KZ. Plus I just like the way they look.



Where's the drool icon!!!???!!!

The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
The following user(s) said Thank You: AJCrader

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06 Aug 2012 10:56 #540976 by NakedFun
Replied by NakedFun on topic '76 KZ900 (ZRX1200R) Build
Yes, very nice bike,

Slight update, waiting on parts.... ugh. Started playing around with the headlight assembly. Using a Kawasaki Zephyr headlight bracket which bolts up directly to the ZRX triples. Mocked up the headlight, and now I am investigating where I can fit the steering damper. Maybe I can sneak it in under the headlight on the front, or may have to go behind the lower trip and moutn of the frame tube. Once I start welding, things shoudl start to pick up on this thread. Parts will hopefully be here by the end of the week.

Cory

2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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06 Aug 2012 19:06 - 06 Aug 2012 19:07 #541061 by camaroguy
Replied by camaroguy on topic '76 KZ900 (ZRX1200R) Build
I have a 81 gpz with the stock headlight and 08 gxr front end.on mine I just welded a tab on the fork stem portion of frame.under the light. the mount acts as a fork stop and the mount for my stabilizer.kinda tight but functional.
Last edit: 06 Aug 2012 19:07 by camaroguy.

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07 Aug 2012 00:07 #541126 by NakedFun
Replied by NakedFun on topic '76 KZ900 (ZRX1200R) Build
Yep looked at it and I may be able to fit it beneath the headlight, but looks a little crowded. Looks like behind the triple might work nicely though....Will have to see if it interferes with my oil cooler.

Cory

2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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07 Aug 2012 00:16 #541130 by GregZ
Replied by GregZ on topic '76 KZ900 (ZRX1200R) Build
Hey Cory the bike is looking good!!
Hey the rear exhaust hangers you keep em or pitch em? let me know if you still have them wish i known you were cutting them off
Thanks for all the parts!!

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  • mark1122
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07 Aug 2012 07:22 #541155 by mark1122
Replied by mark1122 on topic '76 KZ900 (ZRX1200R) Build
or u could mount it on top of the tree's like the modern bikes do.
thats what i did.

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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07 Aug 2012 09:28 #541168 by NakedFun
Replied by NakedFun on topic '76 KZ900 (ZRX1200R) Build
Mark,

I looked at that this morning but will have to give it more thought! Didn't have coffee yet....

Greg,

Yes, I still have them but didn't know you would be interested in cut off frame components! If you want them, I'll send them your way. I think I still can find your addy.

Cory

2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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  • mark1122
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07 Aug 2012 22:39 - 07 Aug 2012 22:41 #541291 by mark1122
Replied by mark1122 on topic '76 KZ900 (ZRX1200R) Build
Lots of ways to do it. this was my way. seem to work well.


Attachment kzsteeringdamper0141.jpg not found



i got the idea from my track bike.


Attachment kzsteeringdamper0041.jpg not found


76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)
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Last edit: 07 Aug 2012 22:41 by mark1122.

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08 Aug 2012 00:21 #541310 by NakedFun
Replied by NakedFun on topic '76 KZ900 (ZRX1200R) Build
Mark,

I really like your track bike components. I like the idea, but I think if it and my oil cooler play nicely together, they both go behind the lower triple and mount off the frame neck.

Cory

2008 Kawasaki Concours 14
1999 Kawasaki ZRX1100
1976 Kawasaki KZ900

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