What was the first Kawa with a six speed gearbox?

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What was the first Kawa with a six speed gearbox?

Postby H2R » Tue May 15, 2018 2:51 pm

It's ATR in that I want a 6 speeder in my H2, but I can't find what the first model of Kawa was that would have had a 6 speed box. My thinking is that Kawa might have used an existing shift drum with a different cut if it was durable enough rather than create a whole new drum.

Thoughts, anyone?

Thx, Stephen
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Re: What was the first Kawa with a six speed gearbox?

Postby stevie747 » Tue May 15, 2018 6:03 pm

GPz900 :smt102
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Re: What was the first Kawa with a six speed gearbox?

Postby Wolfie » Tue May 15, 2018 8:26 pm

Leo and Ralf made a set of billet crankcases some years ago that would take a ZX(?) 6 speed box and they were noticeably larger. In the UK there is just 1 of them.. The Kawacati. I think Ralf himself has the only other one.

I was thinking along your lines some time back and I reckoned it would probably need a dog ring gearbox to fit 6 cogs inside standard cases, which means a very modern item. There will also be a lot of work involved,it's never going to just drop in
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Re: What was the first Kawa with a six speed gearbox?

Postby husson73 » Tue May 15, 2018 10:55 pm

Dave Simmonds H1R had got à six speed gearbox on 1971 made in Italy.
Some crazy italian guys have made 6 speed gear box for H2 or H2R with 1N23456 sometimes ago ( perhaps still available) but you should add a dry clutch made also by them.
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Re: What was the first Kawa with a six speed gearbox?

Postby S2Gerald » Wed May 16, 2018 10:43 pm

For what it's worth, my guess is the Z500 from 1980; the 400 and 550 the same and the GPz550D onwards. The gearbox is clearly a relative of that in the triples looking at the selector drum, gear shifter and forks, but I would guess the spacing between the two shafts, diameters and gear ratios would be all over the place compared to a triple.
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