KZ900 Aluminum swingarm doesn't quite fit

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09 Jun 2012 23:12 - 09 Jun 2012 23:16 #527885 by Kapahulu
I picked up this swingarm on e-bay and it was advertised as coming off a KZ900. Don't know the brand, maybe a Cal Fab or???

The length is right, width in the pivot area is right, shock mounts are right and it has a post to attach the brake torque arm.

Take a look at the pics and you can see it won't fit properly with the two triangles on the frame that hold the passenger pegs and the original exhausts.

It looks certain that I need to cut off the triangles. I plan to leave part of the right side triangle so that there's a place to hold the strap for the header.

Anyone have experience with a swingarm like this? If you have recommendations please let me know before I chop the triangles off.




1978 KZ1000, 1976 KZ900, 1975 H2, 1973 H1, 1973 H2, 1978 RD400, 1977 RD400, 1974 RD350
2strokeworld.com
Last edit: 09 Jun 2012 23:16 by Kapahulu. Reason: added pictures

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10 Jun 2012 04:36 #527913 by COE1948
Replied by COE1948 on topic KZ900 Aluminum swingarm doesn't quite fit
I have got a couple of Calfab alloy swingarms,i went to fit one to a Z1b and i had the same problem .I was going to trim the exhaust brqacket and the horizontil support brace by slicing aliong the bracket and brace parralel to the swing arm making sure that i allowed for some clearance from the swingarm and then i was going to weld some sheetmetal to return the structual integrity to the brace.In the end i did not want to cut up my Z1b so i just got the original swingarm chrome plated,i will save the alloy swingarm for a Z1000 that i am building

Regards Dale

1x1973 Z1900,2x1974 Z1A900,2x1975 Z1B900,2x1976 KZ900s & 2x79KZ1300
XS1100 Yamaha solo
XS1100 Yamaha with DJP sidecar
FJ1100 Yamaha

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11 Jun 2012 00:06 #528079 by gpz1170
Replied by gpz1170 on topic KZ900 Aluminum swingarm doesn't quite fit
Are you looking for a longer swing arm for your Z1 and if so. how much over stock ? Are you keeping the drum brake ?

don

1974 Z1
1976 KZ900
1978 KZ1000
1981 KZ1000
1983 GPZ1100

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  • wireman
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11 Jun 2012 01:00 #528086 by wireman
Replied by wireman on topic KZ900 Aluminum swingarm doesn't quite fit
Yes the cal fab arms work easier on the 77-78 kz 1000 a1-a2 style frames B)

posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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11 Jun 2012 01:38 - 11 Jun 2012 01:42 #528098 by Kapahulu
Replied by Kapahulu on topic KZ900 Aluminum swingarm doesn't quite fit
When I bought the KZ900, it had a 16" rear mag with drum brake. I don't know what bike the wheel came off originally, maybe a later model Kawasaki. Looks wise, in my opinion 16" rear wheel = cruiser and I wanted an 18 inch wheel to make it look like a performance bike.

By the way, this bike has an 1105cc motor and performance cams, it IS fast!

I bought an 18" KZ900 wheel on E-bay with a WM5 rim and put a 130/90 x 18 tire on it. It won't fit with the stock swingarm, the tire is too wide. So I bought the aluminum swingarm.

Today I cut the triangles off the frame, ground them smooth and primered/painted them. Next, I will put the swingarm on and figure out how to mount a strap to hold the header on, since the original mount is now gone.

1978 KZ1000, 1976 KZ900, 1975 H2, 1973 H1, 1973 H2, 1978 RD400, 1977 RD400, 1974 RD350
2strokeworld.com
Last edit: 11 Jun 2012 01:42 by Kapahulu.

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  • 4TheKZ1000
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11 Jun 2012 07:50 #528118 by 4TheKZ1000
Replied by 4TheKZ1000 on topic KZ900 Aluminum swingarm doesn't quite fit
could you heat and bend the brace out of the way? this way you get to keep the braces and the stock look and fuction.

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11 Jun 2012 09:44 #528125 by Kidkawie
Replied by Kidkawie on topic KZ900 Aluminum swingarm doesn't quite fit
The stock swingarm hits too, although the added height of your alu arm might be a problem.


1975 Z1 900
1994 KX250 Supermoto
2004 KX125

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11 Jun 2012 15:23 #528194 by Kapahulu
Replied by Kapahulu on topic KZ900 Aluminum swingarm doesn't quite fit

4TheKZ1000 wrote: could you heat and bend the brace out of the way? this way you get to keep the braces and the stock look and fuction.

I already cut them off, too late now. It looks like the swingarm will work okay now, just need to fabricate something to support the exhaust.

1978 KZ1000, 1976 KZ900, 1975 H2, 1973 H1, 1973 H2, 1978 RD400, 1977 RD400, 1974 RD350
2strokeworld.com

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11 Jun 2012 16:39 #528206 by Drooz
Replied by Drooz on topic KZ900 Aluminum swingarm doesn't quite fit
Ya, what you've done is the easiest way to solve the problem. It's a shame to cut up a Z1, but it sounds like it's far from original anyway! ;)

Sounds like a cool build! B)

'77 kz1000 (zx10r) Modified/Street
'81 GPz550 "TrackBike"
'05 zx10r Retro/Mod Sportbike 4 SALE!!
'02 zrx1200r Lightly Modified Street SOLD!!
'74 h2b 750 (FZ600) "Mongrel" 2 Stroke SOLD!!


"Invictus Maneo" - I remain unvanquished.

Kawasaki - Let The Good Times Roll!

Mississauga, Ontario. CANADA

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  • 4TheKZ1000
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11 Jun 2012 16:40 - 08 May 2013 00:45 #528208 by 4TheKZ1000
Replied by 4TheKZ1000 on topic KZ900 Aluminum swingarm doesn't quite fit

Attachment not found


who cut off the rear top rails from the swingarm? The weld bead that is on the back top of swing arm used to host a upper stiffener bar. Yours are cut off?
Last edit: 08 May 2013 00:45 by 4TheKZ1000.

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11 Jun 2012 17:17 - 11 Jun 2012 17:23 #528213 by 531blackbanshee
Replied by 531blackbanshee on topic KZ900 Aluminum swingarm doesn't quite fit
double post cleanup.

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
Last edit: 11 Jun 2012 17:23 by 531blackbanshee.

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11 Jun 2012 17:21 #528215 by 531blackbanshee
Replied by 531blackbanshee on topic KZ900 Aluminum swingarm doesn't quite fit
the sanctuary guys utilize a custom bracket and the top shock mount bolt to attach the exhaust.





or weld a couple bungs on and make a custom bracket to attach to them.





hth,
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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