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6 hours ago, thaiguzzi said:

Pre unit mate.

So pre 63.

Fair chance the top end of the motor is 9 stud '70, and mebbe got a '70 crank and rods in it. all doable.

But that is a P/U bottom end.

However, the bike has some nicely done, UNUSUAL touches.

The weird timing cover with extension piece,

the use of a front half unit primary cover, with a pre unit rear half - very neat,

Jap 6 spring clutch.

I like the colour details and contrast on the rims and front brake.

Stored pics in my computer files, ta.

According to their site:

The Kestrel started as the unit engine of a 1970 Triumph Bonneville, which was cut in half & re-engineered. With the exception of a few critical pieces everything – including the frame, front forks, gas & oil tanks, exhausts, handlebars, levers, even the cylinders – was fabricated in-house.

 

image.png.adc5c3e462e07c7fa8f9cf91b97d2741.png

 

 

 

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23 hours ago, Justgrazing said:

Yamaha RZ or R1-Z to give it its official moniker .. which caused confusion when they called their later 1 litre Sports job an R1 also .. 

so these were always referred to these as RZ's .. either way a YPVS lump in a trellis frame .. 

 

IMG_20191018_080935.jpg

If I put those bars on and removed my NSR fairing I might ride it a bit more. I wonder what front end I would need?

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Finally - I see a Smart car that is not stupid !!! 555
Altho' ... accidents another thing, saw one and glad I was not in it
Same same Jazz


When I traveled with the carnival back in the ‘80’s, an independent’s son had a 3-wheel HD golf cart powered by a KZ-1100.

When I saw him the next year he had it in a 4-wheel cart...
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Could some one please explain to me the reasoning for the plenum that the pipes go into and the tail pipe comes out of. Is it just for the look or a technical reason . I have never seen anything like this before. Thank in advance Randell

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10 minutes ago, Randell said:

Could some one please explain to me the reasoning for the plenum that the pipes go into and the tail pipe comes out of. Is it just for the look or a technical reason . I have never seen anything like this before. Thank in advance Randell

 

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4 hours ago, Randell said:

Sorry fellas I screwed up this is  the bike in question  and why the plenum?

As Mogandave has already mentioned it could be a catalytic converter .. The bike looks like it may have fuel injection and if that is the case and it is a " closed loop " system then a cat' and lambda sensor are needed to monitor and clean up the emissions output .. But could possibly be just following the latest fashion of a collector silencer with short exit pipe/stub .. Buells had something not dissimilar for yrs though the Bu' silencer looked like it had been nicked offa truck .. 

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