Why GP Bikes is good

[HornetMaX]

Easy, because no other game can do that:

http://www.youtube.com/v/u5BjxZBUFHQ

http://www.youtube.com/v/PkHERCYZ6Oo

Obtaining the above behaviors without any canned animation (e.g. the high-sides in MotoGP 13) is just freakin' amazing !

@Piboso: YOU.RULE.MAN.     (yeah, no big news here)

And now, a quiz for physics modders: somebody able to explain why, in the 2nd video (where I intentionally keep the throttle open while braking with the front) the rear wheel hops ?

You get it wrong and you'll only be allowed to mod scooters and choppers

MaX.

[Hawk]

Can't explain in physics language what is going off there, but I'd have thought if you hold the front brake hard on like that while opening the throttle at that slow speed the rear wheel would just spin up and not hop about like a dancing spring... That's just too weird! Lol

[HornetMaX]

Can't explain in physics language what is going off there, but I'd have thought if you hold the front brake hard on like that while opening the throttle at that slow speed the rear wheel would just spin up and not hop about like a dancing spring... That's just too weird! Lol

Well, that would be true if the bike was stopped, like doing a burn-out. When the bike is moving it's a tad trickier

GPB behavior is correct. Hopping of the rear also happen, for example, when braking hard with the front and downshifting hard or braking with the rear. See this at 0:39s on this video (thanks Dani):

http://www.youtube.com/v/huGexZrovco

Actually, this hoping of the rear while braking (or, worse, total rear lock-up) is the reason for the existence of slipper clutches.
The reason for the hopping (its origin) is actually the same in the two situations.

MaX.

[Hawk]

Yes. I can see your point and the hopping rear wheel in the video(Great video by the way!). Can this happen with two strokes? I mainly only ride the two stroke machines so I can't remember every encountering this issue. 

[HornetMaX]

Yes. I can see your point and the hopping rear wheel in the video(Great video by the way!). Can this happen with two strokes? I mainly only ride the two stroke machines so I can't remember every encountering this issue. 

With 2 strokes hopping while braking won't happen because of the lack of engine brake.

However the "intentional" hopping (braking with front and opening throttle at the same time) happens just the same: it's a bit trickier to show due to the narrow powerband and the lack of power outside it.

MaX.

[HornetMaX]

And now, a quiz for physics modders: somebody able to explain why, in the 2nd video (where I intentionally keep the throttle open while braking with the front) the rear wheel hops ?

You get it wrong and you'll only be allowed to mod scooters and choppers

Hmm nobody replied, the punishment scared the hell of of everybody

So why it happens ... typically under acceleration the bike squats, i.e. it compress the rear suspension. This happens when the rear tire is exchanging a force with the track, pushing the bike forward.

If now you have the rear tire pushing the bike (and the suspension) and you brake with the front, at a given point the rear will slide (longitudinally): at this point the tire is no longer exchanging that much force with the ground, hence the suspension will extend. Then the real wheel will accelerate and reach a speed at which it will regain grip and will start again to exchange a force with the track, hence compressing again the suspension.
Repeated cycles of grip/no-grip (well, less grip) will produce the hopping: the transition grip/no-grip is so fast that the compression of the suspension can literally lift the rear wheel from the ground.

In the case of a hard braking with the front, things are made worse by the fact the rear has very little load (and the rear susp may be at its limit, fully extended): applying rear brake (or too much engine braking) can and will make it hop.

MaX.

[iVolution]

Yeah thats what I thought, just didn't want to spoil your little competition there 

[HornetMaX]

Yeah thats what I thought, just didn't want to spoil your little competition there 

Yeah sure ... chicken ! 

MaX.

[Reactive]

because no other game can do that

Is it so necessary?

But most of the screenshots looks like PSOne graphic from childhood it is Ok, right?

[PiBoSo]

because no other game can do that

Is it so necessary?

But most of the screenshots looks like PSOne graphic from childhood it is Ok, right?

Ouch! 

[_oDi_]

because no other game can do that

Is it so necessary?

But most of the screenshots looks like PSOne graphic from childhood it is Ok, right?

[Alby46]

lol

[HornetMaX]

because no other game can do that

Is it so necessary?

Yes, it is.

But most of the screenshots looks like PSOne graphic from childhood it is Ok, right?

Yes, it is.

Actually it is not, as your statement is false. But even if it were true, the answer would be "Yes, it is.".

The reason is that most of us do not have an orgasm when they see some HDR or lens flare (fake, 99% of the time).
But we do have one when the bike behave as above.

MaX.

P.S.
If you ever manage to finish the TT (titanic work, hats down just for trying) we'll race on it with or without HDR & tuttifrutti, don't worry about that.

[Stout Johnson]

The reason is that most of us do not have an orgasm when they see some HDR or lens flare (fake, 99% of the time).
But we do have one when the bike behave as above.

THAT is so true!

(and btw, GPB graphics aren't bad - not top notch, admitted - but that's not the essence of a sim...)

[Arvoss]

because no other game can do that

Is it so necessary?

But most of the screenshots looks like PSOne graphic from childhood it is Ok, right?

Wait until you see Suzuka! With the new Suzuki it is awesome! Amazing graphics!