Comments by "Uhtred" (@uhtred7860) on "Donut" channel.

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  7. Fast Honda cars just didn't appear out of nowhere, Honda started in motorcycles and racing and Honda has done some amazing engineering, In 1965, Honda unveiled an incredible machine. It demonstrated just how good Honda engineers were. Boasting five cylinders with a bore measuring a minuscule 34.0mm and a stroke of just 27.5mm, this machine had one of the smallest cylinder bores Honda had ever attempted. And it revved to an unheard-of 21,000-rpm redline. Into this 1.33 inch diameter cylinder Honda stuffed four tiny valves and a centrally located spark plug. The next year, Honda engineers made minor changes to the bore/stroke figures, raising the redline to 21,500 rpm. Then there was the RC166, Powered by a four-stroke, DOHC, 24-valve inline six-cylinder engine, the 250-class RC166 roared its way through six open megaphone exhaust pipes all the way up to its 18,000 RPM power peak in a way that wouldn't be replicated until Formula 1 engine makers began experimenting with pneumatic valve gear and equally high engine speeds in the mid-1990s. Also the NR750 road bike, built to show how clever Honda was and an offshoot of the disastrous NR500 GP bike. Soichiro Honda hated 2 strokes and tried to build a 4 stroke to beat the dominant 2 strokes in GP racing, but the rulebook at the time said it had to have 500cc and 4 cylinders, so he made a 4 cylinder V8 that revved to 21,000 rpm. It had oval bores and pistons, each piston has 2 conrods and eight valves. It was a disaster in racing, but as technology advanced they fixed the problems and made the 750cc NR750 road bike. Google these bikes, the engineering is incredible
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