1975 KZ 900 , ZRX Swingarm, 89 GSXR front end

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28 Mar 2009 21:14 #276245 by 531blackbanshee
Replied by 531blackbanshee on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
341,thanks for the compliments.i actually have a zx12 frontend(thanks mark1122)that i will use on this bike.it will be a winter project as i missed out on some riding last spring when i was building the swingarm in question.there are a bunch of pictures in the projects under "my 1980 z1r and 900 projects".i do still need a r1 front wheel tho if you know of any.i built the swingarm out of 1" .065 wall 4130 cro-mo.and milled the axle plates out of a chunk of steel then tigged it all up.it is much more stable in mid corner bumps now.


leon holmes

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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28 Mar 2009 21:25 #276254 by PLUMMEN
Replied by PLUMMEN on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
531blackbanshee wrote:

341,thanks for the compliments.i actually have a zx12 frontend(thanks mark1122)that i will use on this bike.it will be a winter project as i missed out on some riding last spring when i was building the swingarm in question.there are a bunch of pictures in the projects under "my 1980 z1r and 900 projects".i do still need a r1 front wheel tho if you know of any.i built the swingarm out of 1" .065 wall 4130 cro-mo.and milled the axle plates out of a chunk of steel then tigged it all up.it is much more stable in mid corner bumps now.



leon holmes

just as soon as my foot is 100% again ill be ready to have you start on my swingarm Leon,im getting close!B)

Still recovering,some days are better than others.

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28 Mar 2009 21:36 #276258 by 531blackbanshee
Replied by 531blackbanshee on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
i know just as soon as your foot heals the ol impeller will start spining again:woohoo: .

leon holmes

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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29 Mar 2009 00:15 #276295 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
531 blackbanshee,

I salute your swingarm, that is some nice work!!

The bike is fantastic, the Z1R the ultimate KZ. Very nice.

Plummer,

interesting gusset work. more "curvy". I wish I had looked at this forum when I started the project for more ideas.

I prefer more geometric shapes, but can appreciate what you are going for there.

It is so cool to see so many other people working over the KZ. I tell my wife all the time "what the 1957 Chev Bel Air is to hot rodders the KZ is to motorcylists".

341 has a very interesting Honda 160; he should spot a photo, it's not a KZ but it is super cool!!

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s

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29 Mar 2009 08:46 #276355 by 531blackbanshee
Replied by 531blackbanshee on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
tk11b40,thanks for the compliments.i wanted to get that 200 mm tire and 17" wheel stuffed under there without doing any frame modification and as little extension as possible and just let the swingarm kinda dictate it's own shape.i had no idea what the finished product would look like.i knew i was going to use 1" .065 cro-mo because i have already built several sets of a-arms for quads(250r's and banshee's}and have the tubing bender and experience to pull it off.i built it on my lay out table with v-blocks and lots of measurement checking.
341 needs to throw us some pics of that 160 fo sho,is it an old 160 dream or a built up crf 150?
keep us posted your bike is looking good.
leon holmes

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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29 Mar 2009 10:13 #276374 by 341
Ted, hope that you don't mind a bit o' thread hijack. I am taking it to Mike Kirkpatrick in couple of hours to dyno. I will post results when done.

Here it is a '66/68 CB/CL 160/175. It is a 175 with 1mm overbore, undercut tranny, degreed cam, lightened clutch, removed stator and rotor, removed kickstarter, new Mikuni carbs and a custom 2 into 1 exhaust collector with a silencer. Most of the rest of the race field runs open pipes but they are soooooo annoying that I'd really like to run a silencer, but not at the expense of even 1 of the hoped for 18hp. It would be too big of a loss. Ain't she cute? Troy341

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29 Mar 2009 10:33 #276376 by PLUMMEN
Replied by PLUMMEN on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
that is cool looking!B) those tires look like they came off a 10 speed!:laugh:

Still recovering,some days are better than others.

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29 Mar 2009 22:11 #276637 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Hey Troy...

I love that bike!!

It's elegant.. I am hoping you smoke the other 160's.

The scooter "Before transformation"

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s
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29 Mar 2009 22:17 #276640 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Scooter "after Transformation"

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s
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30 Mar 2009 05:49 #276685 by mark1122
Replied by mark1122 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
I just love the custom tail peice.Fantastic.:woohoo:
I bet it would help to stablize the bike at high speeds as well. just like a kite.:P

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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30 Mar 2009 09:22 #276729 by 531blackbanshee
Replied by 531blackbanshee on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
oh man what a little cutey!you don't worry about one horsepower until you only have a few.


leon holmes

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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30 Mar 2009 21:30 #276949 by stoppee
Replied by stoppee on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end


low siding in turn 2 Spokane Race Park

11B40...I don't want to bring this up, as this brings up a tramatic event. But all your riding years were not smooth and trouble free. As you recall, you did have problems that one day, while leading the pack of scooters down the straight stretch at SRP! A little to hot in the turn, to many hard parts on the ground, wheels up...well you can see the results! Hope you learned that some things are not ment to turn!

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