Question:
which bike engine are more complicated & more durable? 2 stroke or 4 stroke? are there such thing as 1000cc 2 stroke sportbike?
Answers:
Ok...I've never riden in a real plane, but I've got to ask...?
I am from India.In india 4 stroke 100cc bikes sell in huge quantities, may be over 4 lakh units a month.
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I think i will explain you the main difference between 2 adn 4 stroke.
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A 2 STROKE ENINE:
IN TWO STROKE ENGINE, OUT OF EVERY TWO REVOLUTIONS, ONE IS POWER STROKE.
IN 4 STROKE, OUT OF EVERY FOUR REVOLUTIONS , ONE IS POWER STROKE.
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So let us say that a two stroke engine is doing 7200 rpm, i.e. 120 revolutions per second. Now its two stroke, so out of two strokes one is power stroke, so the engine will fire 120/2 = 60 times.
Yes the spark plug will fire 60 times in one second.
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Now about four stroke. We already calculated 120 revolutions per second. Now in 4 stroke out of 4 strokes, one is power stroke. So 120/4 = 30.
The spark plug will fire 30 times in one second.
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So the 4 stroke has less power strokes so it uses less fuel than the 2 stroke.
But the 2 stroke engine fires more than the 4 stroke, so it will be more responisve and in the initial rpm range you will fell more powerful and will feel that the engine is more responsive.
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ABOUT COMPLICATED ENGINE:
4 STROKES ARE MORE COMPLICATED AS THEY CARRY MORE PARTS THAN THE 2 STROKE.
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Now let me be frank. I am from India so dont have any knowledge about 1000cc bikes. But yes i know that mostly the Jap big four( Hon, Kwack, Yam and Suzu) are not producing any 2 stroke 1000cc bike.
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Hope my article is informative enough
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A
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The 4 stroke has more parts and will continue to be allowed for a while, but the environmental people have stopped the sales of 2 stroke-rs because of oil gas mix pollution.Another thing, the 2 cycles wear out faster since they fire on every stroke. And most have no cast iron sleeve, just hard aluminum.
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4 strokes are more complex and more durable, 2 strokes are simple and do not last as long. 2 strokes are fading fast. I have never heard of a 1000cc 2 stroke sportbike. I am a 4 stroke fan.can i get a design of a floating motor bike?
You asked a very broad question. The four strokes are more complicated in theory because they have more moving parts, however two strokes are not widely understood by most people. Almost every one who has owned a 2-cycle dirt has rebuilt it at least once, but most of these people don't understand the dynamics of fine tuning the engine, port timing, port height, positive pressure under the piston, timing retard not advance at high rpms. So though the 2-stroke has fewer moving parts I feel it is the more complex engine over all. No body makes 1000cc 2-cycle street bikes, but a 500cc v-4 two stroke will waste any thing! I could go on for ever but I am sure I'll only start to confuse people.(midi moto,superbike,pocket bike, pocket rocket)49cc with elect. start?
I have to add that the guy who answered below me sounds intelligent but is in fact wrong to a degree, a single cylinder 2-stroke fires ONCE every revolution a Single cylinder 4-stroke fires once every other revolution! It sounds like he mixed up strokes with revolutions
two strokes can be reliable but are no longer made. kawasaki made a 750 2 stroke back in the early seventies that would destroy just about anthing out there. in grand prix racing 2 strokes ruled for decades infact a 350cc yamaha won daytona against 750 4 strokes in the seventies. just recently 4 strokes have taken over gp racing but to compete against the 500cc gp bikes the first year they were allowed to be 1000cc. - back in the 60s saab made a 3 cylinder two stroke car that was very reliable but the epa killed it
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FOUR STROKE IS THE BEST.YAMAHA IS THE BEST MOTORCYCLE OF THE WORLD.
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two strokes can generally make the same amount of power with half the displacement. i.e. 125 two storke and 250 four strokeDoes taking the baffel out of the muffeler on a dirtbike increase power?
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The 4 stroke has more parts and will continue to be allowed for a while, but the environmental people have stopped the sales of 2 stroke-rs because of oil gas mix pollution.More Questions & Answers ...
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