Swingarm extention basics

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13 Nov 2011 20:41 #488348 by T_Dub
Replied by T_Dub on topic Swingarm extention basics
Cool. I've been wondering about it for a while. I guess it'd be nice to do some welding and do some tests.

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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  • wireman
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13 Nov 2011 22:10 #488367 by wireman
Replied by wireman on topic Swingarm extention basics
looks much better without that big ol ugly stock brace on top of it! B) B) B) B) B)

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

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  • rslingshot
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14 Nov 2011 10:25 #488432 by rslingshot
Replied by rslingshot on topic Swingarm extention basics

wireman wrote: looks much better without that big ol ugly stock brace on top of it! B) B) B) B) B)


Ya it does look alot better with the top brace gone, But the reason I did the busa arm is because they fit the kz frame with nothing more than some pivot bolt reducer bushings. Pretty much all of the early model gsx-r's and all of the busa arms even the second gen busa fit the kz frames with just a simple bushing set up. It is a little more work with other late model sportbike arms.

www.kzrider.com/forum/11-projects/390747-1977-kz1000-new-life
2000 Kawasaki ZRX1100
2004 Gsx-r 750
78 kz1000 basket case
81 yamaha xs 650 basket case

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14 Nov 2011 12:00 #488438 by hal0tw0
Replied by hal0tw0 on topic Swingarm extention basics
Good stuff man! we all appreciate your time to document this info. B)

1976 KA900. VM28 pumper carbs, K&N pod fiters, RC performace 4/1 exhaust, Dyna ignition, Accel coils and wires, Ohlins rear shocks.....more to come
The following user(s) said Thank You: rslingshot

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14 Nov 2011 13:41 #488442 by 531blackbanshee
Replied by 531blackbanshee on topic Swingarm extention basics
thanks alot for that little tutorial mike. :evil:

very much appreciated. :)

documenting does add to the time.

i have not had my hands on a busa swinger,YET :woohoo: .

but now that you have explained it so thoroughly i will be lookin for one to mod.

so is the first gen's (1999-2007) the best for modding for a kz?

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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14 Nov 2011 14:51 #488450 by rslingshot
Replied by rslingshot on topic Swingarm extention basics

531blackbanshee wrote: thanks alot for that little tutorial mike. :evil:

very much appreciated. :)

documenting does add to the time.

i have not had my hands on a busa swinger,YET :woohoo: .

but now that you have explained it so thoroughly i will be lookin for one to mod.

so is the first gen's (1999-2007) the best for modding for a kz?

Thanks Leon. Ya the arm I did was a first gen 99-07 but the second gen busa arms are just about the same, the only real difference is gen 2 has smaller dog bone linkage bearings,instead of a brake bar for the rear caliper it uses a brake block on the inside of the arm and the caliper braket slips into it and the inside of the tubing when you cut the adjuster blocks off there is a webbing inside the arm where the first gen is hallow. Both are good for modding to the kz frame!

leon


www.kzrider.com/forum/11-projects/390747-1977-kz1000-new-life
2000 Kawasaki ZRX1100
2004 Gsx-r 750
78 kz1000 basket case
81 yamaha xs 650 basket case

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14 Nov 2011 17:17 #488468 by 531blackbanshee
Replied by 531blackbanshee on topic Swingarm extention basics

rslingshot wrote:

531blackbanshee wrote: thanks alot for that little tutorial mike. :evil:

very much appreciated. :)

documenting does add to the time.

i have not had my hands on a busa swinger,YET :woohoo: .

but now that you have explained it so thoroughly i will be lookin for one to mod.

so is the first gen's (1999-2007) the best for modding for a kz?

Thanks Leon. Ya the arm I did was a first gen 99-07 but the second gen busa arms are just about the same, the only real difference is gen 2 has smaller dog bone linkage bearings,instead of a brake bar for the rear caliper it uses a brake block on the inside of the arm and the caliper braket slips into it and the inside of the tubing when you cut the adjuster blocks off there is a webbing inside the arm where the first gen is hallow. Both are good for modding to the kz frame!

leon



thanks mike.

do you mind telling what you charge for one like this?

if you don't wanna post it i understand,no sweat.

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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14 Nov 2011 19:05 #488478 by hal0tw0
Replied by hal0tw0 on topic Swingarm extention basics
how long is the stock busa swingarm?

1976 KA900. VM28 pumper carbs, K&N pod fiters, RC performace 4/1 exhaust, Dyna ignition, Accel coils and wires, Ohlins rear shocks.....more to come

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14 Nov 2011 20:03 #488486 by rslingshot
Replied by rslingshot on topic Swingarm extention basics
No I dont mind posting it Leon.
Standard extended swingarm with extended brake bar or new caliper brake block is $400.00
Add underbrace. +$75.00
remove top brace + $75.00

www.kzrider.com/forum/11-projects/390747-1977-kz1000-new-life
2000 Kawasaki ZRX1100
2004 Gsx-r 750
78 kz1000 basket case
81 yamaha xs 650 basket case

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14 Nov 2011 20:05 #488488 by rslingshot
Replied by rslingshot on topic Swingarm extention basics

hal0tw0 wrote: how long is the stock busa swingarm?


A stock busa arm is 22.5 inches from center of the pivot tube to the center of the axle adjuster slot.

www.kzrider.com/forum/11-projects/390747-1977-kz1000-new-life
2000 Kawasaki ZRX1100
2004 Gsx-r 750
78 kz1000 basket case
81 yamaha xs 650 basket case

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15 Nov 2011 10:52 #488574 by 531blackbanshee
Replied by 531blackbanshee on topic Swingarm extention basics

rslingshot wrote: No I dont mind posting it Leon.
Standard extended swingarm with extended brake bar or new caliper brake block is $400.00
Add underbrace. +$75.00
remove top brace + $75.00


that is a screaming deal :woohoo: !

thanks for posting mike.

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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18 Nov 2011 17:04 #489123 by mark1122
Replied by mark1122 on topic Swingarm extention basics
well done Mike.
Its always cool to see how its done.
B)

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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