Motocross acceleration - 2stroke vs 4stroke?

Question

Which has the best acceleration and by how much?

off the gate would the 2stroke blow the 4stroke away?

Answer 1

2 strokes always beat a 4 stroke the motors are firing twice as much. they rev up quicker and run More rpm's. a four stroke has an advantage at low engine speeds because theres more moving parts so they have more turning mass. a 4 strokes power is also more controllable. a 2 stroke likes to "RIP" when it goes. a 250 2 stroke will usually beat a 500 4 stroke. hope this helps good luck

Answer 2

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I'm sorry guys but a 2 stroke will not out accelerate a 4 stroke in it's same class. One of the biggest disadvantages of a 2 stroke is that they always lose the hole shot to a 4 stroke. Of course I do mean a 450 4 stroke versus a 250 2 stroke. I have raced both and the 4 stroke wins the drag race hands down every time. That's what James Stewart kept complaining about when Kawasaki was the only team still on 2 strokes. As soon as they came out with the KX450F Bubba started getting hole shots. The 2 stroke only feels quicker by the seat of the pants because the power hits so much harder. There is a very good reason why basically no one races MX on a 2 stroke anymore. The 2 strokes are favored by many A class woods riders though.

Answer 3

seems you get all sorts of misinformation on here because you dont always ask the question you want the answer for...

it depends on the gear box of the bike....& wether the bikes are moving or stationary to start with...
Stationary....
4 strokes pull at low revs...so initially the 4 stroke is pulling better..

2 strokes when in the power band produce more power than a 4 stroke at the same RPM..
so the 2 stroke catches up pretty quick
once up & moving as long as you keep the motor in its optimal Rev range (by changing up & down gears) there is not much between them..but four strokes usually have a wider power range than two strokes...
given enough gears the 2 stroke wins because the response is quicker..producing more power over a smaller Rev range..

& thats why the 125 grand prix bikes of yester year had 18 speed gearboxes....LOL

Answer 4

The two stroke will usually win. But now if you watch super cross they use 4 Strokes and they can haul the mail. There isn't quite as much advantage with a 2 stroke as the bike manufacturers have been making the 4 strokes lighter and they rev a lot quicker than just a couple years ago.

Answer 5

The 4 stroke. 2 stroke does have better weight to skill ratio thats why its swifter engine in a short run a 4stroke has better skill yet decrease weight ratio meaning it is going to take longer to kick off yet after it does it is going to triumph over a 2 stroke if you're speaking about motorcycles a 2stroke ought to win a 100m race something over the 4 stroke will win that's likewise why human beings driving motorcycles up steep hills etc specially use 4 stroke because there time-honored skill is a lot greate rthen a 2 stroke. There are united statesand dowsn to both.

Answer 6

2 strokes hands down pull way harder than any thumpers, thumpers have great low end torque though for crawling along real slow. some new four strokes are pretty impressive though i am not impressed enough to give up my 2 stroke.