Handle Bars

[Vellu]

I saw a similar one in some motorcycle exhibition here in Finland. Didn't bother to wait in line to try it out though.

But did anyone else notice that it doesn't seem to use counter-steering to lean the bike. To me it seemed like the bike leaned to the same direction where the handlebars were turned, which would be pretty stupid especially if it is used for educational purposes.

[Shadow]

Yeah, I was just thinking the exact same thing.

[jlv]

That thing is completely wrong. Think about the forces you feel when you go around a corner in real life vs that rig. In real life, when you corner the centripetal force combined with the force to resist gravitational acceleration results in a force vector that will go from the center of pressure (where the tires touch the ground) to the center of mass of the rider and bike. In other words you will feel like you're being pulled towards the point where the tires touch the ground.

In that simulator, they lean the bike, but without centripetal force you only feel gravity. So your force vector is straight up. So if you're leaning 45 degrees, the force vector is off by 45 degrees. They would have been better off with the bike staying upright and tilting the display.

To do the best possible job, you have to get as close as possible to matching the linear acceleration and angular acceleration that should be happening. The problem is doing that perfectly would mean following the exact course the simulated bike is taking, but the simulator has to sit in once place. I believe high end flight simulators handle that problem by essentially running everything through a high pass filter, so you feel sharp acceleration, but the slow acceleration is always re-centering the simulator.

[JackFly027]

That thing is completely wrong. Think about the forces you feel when you go around a corner in real life vs that rig. In real life, when you corner the centripetal force combined with the force to resist gravitational acceleration results in a force vector that will go from the center of pressure (where the tires touch the ground) to the center of mass of the rider and bike. In other words you will feel like you're being pulled towards the point where the tires touch the ground.

In that simulator, they lean the bike, but without centripetal force you only feel gravity. So your force vector is straight up. So if you're leaning 45 degrees, the force vector is off by 45 degrees. They would have been better off with the bike staying upright and tilting the display.

To do the best possible job, you have to get as close as possible to matching the linear acceleration and angular acceleration that should be happening. The problem is doing that perfectly would mean following the exact course the simulated bike is taking, but the simulator has to sit in once place. I believe high end flight simulators handle that problem by essentially running everything through a high pass filter, so you feel sharp acceleration, but the slow acceleration is always re-centering the simulator.

That was a nice physics lesson.



So is there any other handle bar steups besides the Thrustmaster freestyle bike controller?

I tried looking and found nothing.

[yomo]

That thing is completely wrong. Think about the forces you feel when you go around a corner in real life vs that rig. In real life, when you corner the centripetal force combined with the force to resist gravitational acceleration results in a force vector that will go from the center of pressure (where the tires touch the ground) to the center of mass of the rider and bike. In other words you will feel like you're being pulled towards the point where the tires touch the ground.

In that simulator, they lean the bike, but without centripetal force you only feel gravity. So your force vector is straight up. So if you're leaning 45 degrees, the force vector is off by 45 degrees. They would have been better off with the bike staying upright and tilting the display.

To do the best possible job, you have to get as close as possible to matching the linear acceleration and angular acceleration that should be happening. The problem is doing that perfectly would mean following the exact course the simulated bike is taking, but the simulator has to sit in once place. I believe high end flight simulators handle that problem by essentially running everything through a high pass filter, so you feel sharp acceleration, but the slow acceleration is always re-centering the simulator.

So basically there is no way to make it feel realistic without actually riding? Or have I totally missed the point?
What about one of those moving platforms? Would the sideways acceleration feel similar to real life?

[DJ99X]

Correct, there is no way to make it feel completely realistic. Unless you had some sort of rotating system. Except you would only be able to feel it in one direction, because you can only rotate in one direction.

The only way to make it realistic, is to actually ride the bike.

[jlv]

So basically there is no way to make it feel realistic without actually riding? Or have I totally missed the point?
What about one of those moving platforms? Would the sideways acceleration feel similar to real life?

To be exactly correct, yes. But to be pretty good, you only have to get the sharp acceleration right and have your overall force vector match gravity. I bet there are tons of papers written on this for flight simulators.

[JETZcorp]

Maybe something could be made of this?
http://www.youtube.com/watch?v=p2qlHoxPioM

[Voutare]

SNIP

Question, completely irrelevant to the topic at hand, and fairly useless in the grand scheme of things, but I feel it's necessary:


Did you ever go to college, and what did you Major in? Because it seems as if you know about damn near everything from video games, to physics, to general math, to coding, to internet connections, etc.

[jlv]

No, I'm self taught.

[jbob23]

respect

[rideblue56]

No, I'm self taught.

damn... i never would of called that. thats awesome!

[JETZcorp]

Well, I'm always lost in the coding and such, but the physics all seem simple enough. I mean, it only takes a somewhat basic conceptual understanding to follow what he's said in this thread. Physics only really gets confusing when you start putting maths to it, I find. Of course, I'm saying that because I have physics homework that needs doing, and there are a bunch of trig functions crawling about on it.

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