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1 hour ago, ktm jeff said:

Rotary engined bikes are rare. Suzuki , Kawasaki and Yamaha are well known , but there was another. No , its not Honda. Take another guess.

Bridgestone 350 GTR and possibly 50cc roadracers.  Kreidler had some 50cc rotary race bikes.

Bridgestone GTR 350https://i.pinimg.com/originals/6d/d4/a2/6dd4a28cba7798ac4c3688bdb77744ac.jpg

 

Maico

http://onlymotorbikes.com/public/19/maico-md-250-1972-moto.jpeghttps://2strokebiker.files.wordpress.com/2010/08/5010904.jpg

bs50-17.jpg

 

  1922 Sun 268cc http://www.classic50racingclub.co.uk/image/2/1/1/6/6/2116680/00964040.jpg

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5 hours ago, ballpoint said:

Another monocoque, the Spanish built Ossa 250cc Grand Prix bike.  With a two stroke, rotary valve 250cc engine, it only developed 30hp, but it still came third in the 1969 250cc world championship, despite being up against the might of the Japanese.  This was mainly due to its magnesium monocoque chassis, meaning the bike weighed 20kg less than the Japanese competition, and was overall far more agile.  It won three grands prix in 1969, against the previously unbeatable Yamaha TD2s, and led the championship going into the final race, where it crashed.  It was again leading the championship going into the Isle of Man TT in 1970, but again crashed, killing the factory rider, and Ossa totally withdrew from road racing because of it.  

 

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40 hp would be closer to the true output, I think. I owned and raced a 1968 Bultaco TSS, and that single-cylinder twostroke developed just under 40 hp.

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Another  6 banger ,from a more modern times Kawasaki Z1300  engine putting out 120bhp ,but it had its problems weighing in at 297k g dry weight ,a big bike dubbed car with outdoors in America ,the Z1300 biggest market.

Released in 1978 ,sold to Jo public in 1979 ,it had its problem sump capacity having to be increased for the 1980 model, from four and a half litres, to six litres due to crank issues, with some original owners finding oil starvation at the crank causing massive, sometimes catastrophic failures, Re very expensive.

And those rear shocks looked if they come from my Wave, they were beefed up to gas shocks in 1981.

Capture.PNG

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2 hours ago, kickstart said:

Another  6 banger ,from a more modern times Kawasaki Z1300  engine putting out 120bhp ,but it had its problems weighing in at 297k g dry weight

that was always it's problem .. too heavy and with looks only it's mother could love .. immensely powerful at the time but just too much of a tank .. 

dude I worked with back in the 80's had one with a 6/1 exhaust with no silencer innards at all , just a straight mortar tube .. you could hear it 1/2 mile away in the mornings .. especially if he was late ..

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What Brembo are to brakes and Ohlins are to suspension then Marchesini are to rims .. founded late 80's by Roberto M they became THE rim manufacturers to the racing motorcycle fraternity with magnesium alloy , forged aluminium and carbon fibre Marchesini rims becoming a by-word for quality and used by just about every racing manufacturer down the years .. Sad then to read that founder Roberto Marchesini passed away earlier this week after a short illness aged 68 .. 

A true legend within the sport and a nice bloke to boot .. will be sorely missed .. 

 

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IMG_20201002_191848.jpg

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