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Kosman frame bracing kits for the Z1 KZ900 KZ1000 29 Oct 2015 10:58 #696434

  • Dr. Gamma
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I have been slowly putting my KZ1000 Superbike back together piece by piece. People been asking about frame bracing and where to put all the bracing needed to make the big KZ to handle. The frame picture here is what most people used in AMA Superbike racing from late 1977 to about 1981. All that thin plate gusseting around the steering stem is flat useless. Just remove all of it. Tubular bracing is the only answer to strengthening up the steering stem. Now if you add oversize motor mount bolts, and ream the frame and engine cases so that all the motor mount bolts are a interference fit or press fit. The motor becomes part of the frame. All other gusseting that is not shown is really not needed to strengthen up the frame.








1972 H2 750 Cafe Racer built in 1974.
1976 KH400 Production Road Racer.
1979 Kz1000 MK. II Old AMA/WERA Superbike.
1986 RG500G 2 stroke terror.
1986 GSXR750RG The one with the clutch that rattles!

Up in the hills near Prescott, Az.

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 29 Oct 2015 10:58 #696435

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Sorry about all the duplicates, the library in Prescott Valley just got hit by a HUGE thunder shower, then everything locked up and then went blank. Then all the duplicates popped up.
1972 H2 750 Cafe Racer built in 1974.
1976 KH400 Production Road Racer.
1979 Kz1000 MK. II Old AMA/WERA Superbike.
1986 RG500G 2 stroke terror.
1986 GSXR750RG The one with the clutch that rattles!

Up in the hills near Prescott, Az.

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Last edit: by Dr. Gamma.

Kosman frame bracing kits for the Z1 KZ900 KZ1000 29 Oct 2015 11:09 #696437

  • SWest
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Do you want them deleted?
Steve
The following user(s) said Thank You: Dr. Gamma

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 29 Oct 2015 11:12 #696438

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YES PLEASE!!! There should be a total of six photos with the listing. It is getting real scary here in Prescott Valley. The skies have opened up again big time !!!
1972 H2 750 Cafe Racer built in 1974.
1976 KH400 Production Road Racer.
1979 Kz1000 MK. II Old AMA/WERA Superbike.
1986 RG500G 2 stroke terror.
1986 GSXR750RG The one with the clutch that rattles!

Up in the hills near Prescott, Az.

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 29 Oct 2015 11:29 #696439

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I live in the desert too. I have a large wash the goes corner to corner on my 5 acres. It can be a torrent in seconds. I'll delete your removed posts.
Steve







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Kosman frame bracing kits for the Z1 KZ900 KZ1000 21 Apr 2016 19:09 #722277

  • Coast Steve
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Hey DR Gamma,

Do you still offer this frame stiffening kit?

Thanks,

Steve
1982 Kawasaki Eddie Lawson S1 (1136cc race replica clone.)

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 22 Apr 2016 07:15 #722331

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I may be wrong , but I dont believe he was offering to make kits for sale.
Dave

Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 22 Apr 2016 07:52 #722344

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Oh thanks Dave,

I guess I just assumed they were for sale since it was in the vendor forum.
Looks like a good idea to stiffen up things though.

Steve
1982 Kawasaki Eddie Lawson S1 (1136cc race replica clone.)

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 22 Apr 2016 09:05 #722360

  • TexasKZ
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Last time i looked, PMC has a bracing kit listed in their catalogue. You could contact Z1E and ask if they can order it.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 22 Apr 2016 09:22 #722363

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My frame is an 81 GPZ1100 though. Not sure if it's in kit form.

I thought it would save on cutting all the pieces if I can find a kit.

Don't see anything on PMC's site though.
1982 Kawasaki Eddie Lawson S1 (1136cc race replica clone.)

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 22 Apr 2016 10:06 #722369

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Coast Steve wrote: My frame is an 81 GPZ1100 though. Not sure if it's in kit form.

I thought it would save on cutting all the pieces if I can find a kit.

Don't see anything on PMC's site though.

Try giving 531blackbanshee a P.M., he used to make them
Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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Kosman frame bracing kits for the Z1 KZ900 KZ1000 26 Apr 2016 11:09 #723076

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After I get my 440 back together and caught up on shop and house projects, If someone provides the appropriate frame and/or, as well as their knowledge with the Z1, 9 and/or 1k, cause I havent got a clue other than the 900 has a front wheel I want :P Also help from such individual in measuring, marking, cutting and fitting, I wouldn't mind opening the shop doors on a weekend to bang some bars out for the community B) I'm no motorcycle expert by any means, but Ive been told that my mutant power is the ability to easily spot problems and fabricating problem solving?
Also, I'm not in any way trying to step on anyone's toes or gain customers, he'll chances are it may not even happen? (that is unless you wanted to turbocharge your car :P ) sooo yeah,
Cheap labor isn't skilled, skilled labor isn't cheap.
1980 KZ440a. I went green.
If you yourself are building an older bike and can see it through till you're riding it, that's proof you have patience.

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