New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!)
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Title : New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!)
link : New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!)
Race rules express Honda to no to a greater extent than than 4 cylinders. But Honda engineers had calculated for the displacement the ideal engine would own got viii cylinders as well as 32 valves.
When the FIM announced inwards 1968 that the 500 cc engine flat was express to 4 cylinders, that gave a pregnant payoff to teams utilizing two-stroke engines. Sochiro Honda made it clear that he was committed to the cleaner burning four-stroke engines.
Thinking exterior the box, engineers designed a 4 cylinder engine alongside oval Pistons that allowed a sum of xvi intake as well as xvi exhaust valves. It had 2 con-rods as well as viii valves per cylinder. It was a 4 stroke as well as was designed to overcome the monopoly past times two-strokes inwards motorbike racing.
This allowed the engine to hand 19,500 rpm, twice the speed of 2 strokes, as well as create might comparable to 500GP 2 strokes
They speedily ran into issues. With 2 connecting rods connected to each other via the piston, at engine speeds over 10,000 rpm they would distort, causing wrist pivot failure.
For a four-stroke engine to survive equally powerful equally a two-stroke unit of measurement alongside the same piston count, it basically has to double its normal rpm. To gain that, the squad had to dramatically better the intake efficiency as well as blueprint a valve arrangement alongside higher resistance to friction as well as rut buildup at high revolutions.
The biggest challenge were the oval piston rings. They became non alone a multiple iteration blueprint exercise, but ane of manufacturing capability. To gain their target, they needed tolerances higher than the equipment of the fourth dimension could produce.
Hence, inwards Apr 1978, afterward a nearly 12 twelvemonth hiatus, Honda announced publicly it would supply to Grand Prix motorbike racing, specifically utilizing a four-stroke
Honda was experimenting alongside cutting-edge technologies beyond the realm of conventional thinking. Not exactly the engine design, but too the body.
In add-on to the highly exotic engine, the NR 500 too utilized a monocoque aluminum body, as well as inverted forks - a criterion practise on virtually sport bikes today. Honda too used xvi inch wheels versus the to a greater extent than mutual xviii inch inwards gild to cut back aero drag.
The complex four-stroke caput added nearly 45 pounds to their wheel versus the competition. That negatively impacted the bike's middle of gravity as well as balance. The squad got aggressive alongside materials. Iron was replaced alongside titanium. Aluminum was replaced alongside magnesium.
In this side past times side video, at that spot volition survive really piffling to appreciate, it's exactly dull photographic idiot box camera induce along the wheel body, as well as the recorded engine sounds from a race track.
http://www.motorcyclespecs.co.za/model/Classic%20Racers/honda_nr_500_gp_racer_1979.htm
You are now reading the article New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!) with the link address https://newaudisportscar.blogspot.com/2021/02/new-alone-oval-piston-dual-con-rod.html
Title : New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!)
link : New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!)
New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!)
Race rules express Honda to no to a greater extent than than 4 cylinders. But Honda engineers had calculated for the displacement the ideal engine would own got viii cylinders as well as 32 valves.
When the FIM announced inwards 1968 that the 500 cc engine flat was express to 4 cylinders, that gave a pregnant payoff to teams utilizing two-stroke engines. Sochiro Honda made it clear that he was committed to the cleaner burning four-stroke engines.
Thinking exterior the box, engineers designed a 4 cylinder engine alongside oval Pistons that allowed a sum of xvi intake as well as xvi exhaust valves. It had 2 con-rods as well as viii valves per cylinder. It was a 4 stroke as well as was designed to overcome the monopoly past times two-strokes inwards motorbike racing.
This allowed the engine to hand 19,500 rpm, twice the speed of 2 strokes, as well as create might comparable to 500GP 2 strokes
They speedily ran into issues. With 2 connecting rods connected to each other via the piston, at engine speeds over 10,000 rpm they would distort, causing wrist pivot failure.
The biggest challenge were the oval piston rings. They became non alone a multiple iteration blueprint exercise, but ane of manufacturing capability. To gain their target, they needed tolerances higher than the equipment of the fourth dimension could produce.
Hence, inwards Apr 1978, afterward a nearly 12 twelvemonth hiatus, Honda announced publicly it would supply to Grand Prix motorbike racing, specifically utilizing a four-stroke
Honda was experimenting alongside cutting-edge technologies beyond the realm of conventional thinking. Not exactly the engine design, but too the body.
In add-on to the highly exotic engine, the NR 500 too utilized a monocoque aluminum body, as well as inverted forks - a criterion practise on virtually sport bikes today. Honda too used xvi inch wheels versus the to a greater extent than mutual xviii inch inwards gild to cut back aero drag.
The complex four-stroke caput added nearly 45 pounds to their wheel versus the competition. That negatively impacted the bike's middle of gravity as well as balance. The squad got aggressive alongside materials. Iron was replaced alongside titanium. Aluminum was replaced alongside magnesium.
In this side past times side video, at that spot volition survive really piffling to appreciate, it's exactly dull photographic idiot box camera induce along the wheel body, as well as the recorded engine sounds from a race track.
http://www.motorcyclespecs.co.za/model/Classic%20Racers/honda_nr_500_gp_racer_1979.htm
Thus the article New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!)
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You are now reading the article New The Alone Oval Piston Dual Con Rod Engine Made, The Honda Race Bicycle Nr 500 Engine, 1979-83 (Thanks Steve!) with the link address https://newaudisportscar.blogspot.com/2021/02/new-alone-oval-piston-dual-con-rod.html