[gif] too much front brake and leaves cycle before impact

[Turbo Ghost]

I will say that the impact against the car and the movement of the bike after a verrrry realistic! It's the launch that's the big issue. Physics don't seem to be obeying the laws!

[njchopper87]

I dunno.. it looks like he still had quite a bit of momentum before coming to a stop.. or it could just be the crappy camera.

[dReWpY]

That's ninja skills right there

[Particle Man]

Originally Posted by fasternyou929

Oh boy, here we go.

But would it launch if it were on a treadmill?

I remember that conversation

[Homeslice]

Originally Posted by Particle Man

I remember that conversation

If the question is would a plane take off without its engine running, if the treadmill had brought it up to a sufficient speed? The answer is yes, since airspeed is the only thing required to generate lift. However, as soon as the plane starts to lift off the treadmill, it would glide back down, and actually fall back a bit, because the treadmill was the only thing giving it its forward momentum.

[goof2]

Originally Posted by Homeslice

If the question is would a plane take off without its engine running, if the treadmill had brought it up to a sufficient speed? The answer is yes, since airspeed is the only thing required to generate lift. However, as soon as the plane starts to lift off the treadmill, it would glide back down, and actually fall back a bit, because the treadmill was the only thing giving it its forward momentum.

Unfortunately that isn't the question. The question comes from the following scenario. A plane is on a "treadmill" trying to take off. This theoretical treadmill accelerates to match the speed of the airplane with the result being the groundspeed of the airplane is 0mph. Will the airplane take off? It is a bullshit question.

[fasternyou929]

Originally Posted by goof2

Unfortunately that isn't the question. The question comes from the following scenario. A plane is on a "treadmill" trying to take off. This theoretical treadmill accelerates to match the speed of the airplane with the result being the groundspeed of the airplane is 0mph. Will the airplane take off? It is a bullshit question.

Yep - no different than saying "if a plane's brakes were adequate to hold it still and the pilot applied full throttle, would it take off?" Completely implausible, however, change "brakes" to "treadmill" and suddenly it's a raging internet debate with physics experts pouring in from all directions.

[Homeslice]

Originally Posted by goof2

Unfortunately that isn't the question. The question comes from the following scenario. A plane is on a "treadmill" trying to take off. This theoretical treadmill accelerates to match the speed of the airplane with the result being the groundspeed of the airplane is 0mph. Will the airplane take off? It is a bullshit question.

I don't see why it wouldn't. Doesn't matter WTF the treadmill is doing. As long as the plane has its own motive power (engines) and it reaches sufficient airspeed, it will take off.

[Turbo Ghost]

Originally Posted by Homeslice

I don't see why it wouldn't. Doesn't matter WTF the treadmill is doing. As long as the plane has its own motive power (engines) and it reaches sufficient airspeed, it will take off.

That's just it! The plane isn't moving! There IS no airspeed! The only things moving are the treadmill and the wheels which are only rotating. I don't quite think you understand why planes fly. The motor and propeller and wheels have nothing to do with it!

['73 H1 Triple]

Originally Posted by Turbo Ghost

That's just it! The plane isn't moving! There IS no airspeed! The only things moving are the treadmill and the wheels which are only rotating. I don't quite think you understand why planes fly. The motor and propeller and wheels have nothing to do with it!

The only difference would be the wheel bearing speed since they are freely rotating and the propeller or jet engine thrust is what actually makes the plane fly.