Anyone seen this before?

[K2-K6]

Along with the carbs, sidepanels come forward over where airbox is normally plus look at the odd shape of the generator cover.

[UK Pete]

I have seen this on the sandcast forum I am sure it was a prototype
When it was going to be named the 750 dream or something like that

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[K2-K6]

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Possibly the Kawasaki equivalent,  supposedly a styling prototype.

[K2-K6]

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And the Yamaha too.

[hairygit]

Ahh, the 750 kwack prototype! They were apparently ready to show the world, but Honda beat them to marketing the first 4cyl 750 bike. They allegedly went back and designed the Z900 to get ahead in the race.

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[royhall]

Ahh, the 750 kwack prototype! They were apparently ready to show the world, but Honda beat them to marketing the first 4cyl 750 bike. They allegedly went back and designed the Z900 to get ahead in the race.

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You can see Z1R in that kwack prototype so not all wasted.

[Rozabikes Tim]

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And the Yamaha too.

....Water cooled too???

[K2-K6]

Ahh, the 750 kwack prototype! They were apparently ready to show the world, but Honda beat them to marketing the first 4cyl 750 bike. They allegedly went back and designed the Z900 to get ahead in the race.

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You can see Z1R in that kwack prototype so not all wasted.

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I didn't think of that one Roy,  but it does look uncannily like the Z1R. As well as the tank those side panels and even front mudguard could be almost the same items for the shape and design concept.

[K2-K6]

The Yamaha was ready to roll into production it seems,  shame we never saw it out to customers.

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This kawasaki two stroke also seem close to the same point in development terms,  although a square four appears to limit development.

[hairygit]

Regarding the Yamaha, being a 4cyl two stroke, that would have been and amazingly smooth running motor, but then again, fuel consumption would be scary, and with that tiny tank, a range of 30 miles ridden hard!!!!!!!!

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[royhall]

Ahh, the 750 kwack prototype! They were apparently ready to show the world, but Honda beat them to marketing the first 4cyl 750 bike. They allegedly went back and designed the Z900 to get ahead in the race.

Sent from my X6pro using Tapatalk

You can see Z1R in that kwack prototype so not all wasted.

The engine in the kwack looks like a virtual rip off of an MV Agusta 750. Nothing like what they ended up with?


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[Rob62]

Those yam, kwak prototypes are a bunch if ugly dated buggers compared to the timeless classic good looks of the CB....

[Tomb]

Which goes to prove that beauty is in the eye of the beholder.

Its already been said, the Kwak has the clear lines of that timeless classic the Z1R which could never be described as dated, and the Yamaha prototype has the look of the beautifully lines of the XS650.

[royhall]

Which goes to prove that beauty is in the eye of the beholder.

Its already been said, the Kwak has the clear lines of that timeless classic the Z1R which could never be described as dated, and the Yamaha prototype has the look of the beautifully lines of the XS650.

Or in the eyes of the beer holder.

[K2-K6]

It's funny Roy that the MV was also considered a straight rip off from the Gilera racers.

The Kawasaki four stroke is interesting as it says it was a styling exercise done in Calafornia and would have been prior to the Honda 750 being revealed.  As such the only general four cylinder bike engines readily viewable (other than Honda racers) i would guess would be the Italian stuff to style it around.