Obra de arte - Honda NR 500.
Obra de arte - Honda NR 500.
Cara eu nunca tinha visto estes cilindros e pistões ovais ! Maneiro !
2 bielas por pistão !
This is the unsuccessful Honda NR500 Formula One 500cc Motorbike Grand Prix engine. Honda, a traditionally 4-stroke engine designer, decided to try something radical to try to make as much power as the 2-stroke engines that were starting to dominate the 500cc GP class. They did their sums, and decided that they needed eight valves per cylinder to make enough power, and so the oval piston engine was born.
As you can see, the odd shape of the pistons required them to have two con-rods each, and if you look carefully you'll see that they also have two spark plugs each as well. The engine made it's debut in 1979 in the NR500 (New Racer 500cc) bike, but it was plagued with oil control problems with the rings, not surprisingly. Honda tried and tried and tried to make it work, but after many blow-ups they gave up trying to do it in the public spotlight and the engine was 'retired'. They persisted though, and it ran in the 1987 Le Mans bike Gp in 750cc form. It qualified in 2nd place, but a con-rods bolt let go very early so the race was over all too soon. It made about 180hp from 750cc, which is not bad. Not to mention 19,000 RPM!!
It's final showing was in the Honda NR750 road bike, of which only a few hundred were (hand) made, and so they cost a huge amount of money. (¥5,000,000 in Japan, or ¥8,000,000 for the overseas market)
Olhem estes coletores, que "formosura "
2 bielas por pistão !
This is the unsuccessful Honda NR500 Formula One 500cc Motorbike Grand Prix engine. Honda, a traditionally 4-stroke engine designer, decided to try something radical to try to make as much power as the 2-stroke engines that were starting to dominate the 500cc GP class. They did their sums, and decided that they needed eight valves per cylinder to make enough power, and so the oval piston engine was born.
As you can see, the odd shape of the pistons required them to have two con-rods each, and if you look carefully you'll see that they also have two spark plugs each as well. The engine made it's debut in 1979 in the NR500 (New Racer 500cc) bike, but it was plagued with oil control problems with the rings, not surprisingly. Honda tried and tried and tried to make it work, but after many blow-ups they gave up trying to do it in the public spotlight and the engine was 'retired'. They persisted though, and it ran in the 1987 Le Mans bike Gp in 750cc form. It qualified in 2nd place, but a con-rods bolt let go very early so the race was over all too soon. It made about 180hp from 750cc, which is not bad. Not to mention 19,000 RPM!!
It's final showing was in the Honda NR750 road bike, of which only a few hundred were (hand) made, and so they cost a huge amount of money. (¥5,000,000 in Japan, or ¥8,000,000 for the overseas market)
Olhem estes coletores, que "formosura "
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DirtAction
- Motociclista
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Re: Obra de arte - Honda NR 500.
caraca!!!
queria ver algum video dela!
queria ver algum video dela!
Re: Obra de arte - Honda NR 500.
Coisa linda
muito interessante o formato dos pisotes!!!
muito interessante o formato dos pisotes!!!
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Medeiros Neto
- Dinossauro
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Re: Obra de arte - Honda NR 500.
Realmente muito interessante.
Abraços Gente Boa !!! 
XTZ 150 Crosser ED 2017
XTZ 150 Crosser ED 2017
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Gabriel SP
- Roda Presa
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Re: Obra de arte - Honda NR 500.
C A R A C A !!!! Simplesmente um show.