Troy Bayliss to test Ducati GP9

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<div class='quotetop'>QUOTE (Babelfish @ May 8 2009, 09:02 AM) <{POST_SNAPBACK}><div class='quotemain'>Why the .... did you bring that up J. Look what you got...
And Lex, this is in fact very amusing. You're fantasy is clearly not limited to conspiracy theories but now also by redifineg bike physics.
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I actually think it makes a little sense,I`m not articulate enough to explain it like Lex has but it sorta comes down to what I`ve said before being `he can be at one with the bike`.Does that make sense?
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<div class='quotetop'>QUOTE (DRILL @ May 8 2009, 02:07 PM) <{POST_SNAPBACK}><div class='quotemain'>I actually think it makes a little sense,I`m not articulate enough to explain it like Lex has but it sorta comes down to what I`ve said before being `he can be at one with the bike`.Does that make sense?
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First of all, no doubt there is a special conection between the rider and the bike in this case, but i strongly doubt it has anything to do with Lex's fantasy.
Let me clear up a few things:
You don't load a vauge front, you unload it. If it's anything a racer learn it's that loading the front without feel does take you down. Instincts say othervise as yo arrive at high speed but unless you unlearn those instincts very quickly you are never getting anywhere in motorbike racing. Thats part of the most basic stuff.
Besides, Lex suggest that they let off the brakes before they turn in, but if you study the top guys you will see that this is a simultanious action, carefully letting some off the brakes and tipping in. Idealy the front suspension hardly moves at all, close to maximum load, during this stage, only closing in on apex they slowly unload the front slightly.Letting off and then turn in is hardly track day racing.
Going into the turns with the 800's is all about late braking. They go in faster than they used to as they can flip it over with less force, and thereby unsettling the bike less, and as a result brake harder and longer into the turn. They ALL do this. At apex they have more or less the same speed as with the 990's. Slightly higer, but marginally.
Then there the magic where stoner don't brake just keep more speed and load the front with the speed, but at the same time it's clear for all of us to see that he are no faster then others into the turns. How he reduce the speed without the brakes remain the big mystery, or for that matter why he doesn't fly by all the others.
Another mystery is how trail braking require a hard carcass front tire? I'm not even going into thatone as it doesn't make sense at all.
According to Lex the control tire is soft to reduce corner entry speed yet it produce better racetimes than last year. Another mystery.

I could go on but now I'm tired of picking that fantasy to pieces.
 
<div class='quotetop'>QUOTE (Babelfish @ May 8 2009, 12:02 AM) <{POST_SNAPBACK}><div class='quotemain'>Why the .... did you bring that up J. Look what you got...
And Lex, this is in fact very amusing. You're fantasy is clearly not limited to conspiracy theories but now also by redifineg bike physics.
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Babel, can we both agree that the front tire can only do so much? and that a bike with a rearward weight bias often feels light or vague in the front?

Back when Nicky was slower than he is now, he said that the front end feel was amazing. More recently he has said the front doesn't give much warning before it disappears.

Stoner has been quoted as saying the biggest thrill about riding the Ducati is throwing it into a turn much too fast and then trusting the front to stick.

Turning in when a bike feels light at the front is horrifying, I can't imagine what it's like when you're going 100mph.
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Stoner ain't scared, but everyone else seems to be a bit timid.
 
One note to add to this scenario. The main factor for Troy Bayliss in motoGP was the fact that he hated the "SHOW". He liked nothing about the whole scene - he was never comfortable in motoGP and as soon as he went back to WSBK he was again competitive.
Any number of interviews he's given indicate this. He could be competitive and win, and to me his win in the final GP at Valencia 2006 was the sweetest victory of all. It was overshadowed by the tumultuous events that happened that year, but the record speaks for itself. The ride he did was just unbelievably ...... awesome.
Troy will never again ride at championship level but he'll always be a champion, even when testing.




PS - I love Bayliss. What a champ!!! (As if you never guessed)?

PPS - his testing of the duke will have little, if any bearing on how the GP9/10 works out.
 
<div class='quotetop'>QUOTE (mylexicon @ May 8 2009, 05:57 PM) <{POST_SNAPBACK}><div class='quotemain'>Babel, can we both agree that the front tire can only do so much? and that a bike with a rearward weight bias often feels light or vague in the front?
Unless you come draggin in with a harley I don't think that matters much at a typical corner entry. At that point even when you start tipping in the front carry 99.99% of the bikes weight regardless of weight bias.
<div class='quotetop'>QUOTE <div class='quotemain'>Back when Nicky was slower than he is now, he said that the front end feel was amazing. More recently he has said the front doesn't give much warning before it disappears.

Stoner has been quoted as saying the biggest thrill about riding the Ducati is throwing it into a turn much too fast and then trusting the front to stick.

Turning in when a bike feels light at the front is horrifying, I can't imagine what it's like when you're going 100mph.
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Stoner ain't scared, but everyone else seems to be a bit timid.
Now we are talking, but the way I read those quotes it's about the less typical turns without hard braking but with high speed entries, yes? That's where Stoner shine and that's where it takes balls to go in hard without the best feel or trust in the front. But at the same time, it shouldhn't hurt to load the front with body position in a turn like that, the front will not overload in those turns until near the apex, if at all. Nither will the rear gain much heat at the entry of the corners. Though it could let go if it's not loaded at all, but that would suggest more than compensating for rear weight bias.
 
<div class='quotetop'>QUOTE (BigAl @ May 8 2009, 09:34 AM) <{POST_SNAPBACK}><div class='quotemain'>
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kim bayliss will chop one of his other fingers off if he suggests that....
LOL she just might chop something else off!
 
Lex and Bab's, you've started an interesting discussion.

First, most riders trail (front) brake and load the inside front through the apex in TIGHT corners. They may come off a bit before tip in, but are back on as they approach apex. It allows them to carry more corner speed but stil get the bike turned. It's impossible to 'sweep' a corner without this. Without trail braking, their rear tires would be on the rumble strip. I actually looked specifically for this and saw it all race at Motegi (10 feet away).

I think the perception that Stoner trail brakes with the rear pre apex is not totally accurate. HE GETS THE BIKE MORE SQUARE before the corner apex/acceleration point. Heavily braking the rear at his initial braking point allows LESS front load before tip in and later braking (more front load during trail). We've all seem him use the brake to slide the rear before tip in, but he's well off it before the apex. Nicky sometimes uses the rear to square up AFTER the apex.

You'll notice how great Stoner is at and after the apex. None of that burn out powerslide after the apex like Melandri and Hayden sometimes did in 2006. I actually can't recall Stoner ever sliding POST apex. His rear is planted and his lean angle deep (more rear traction). He's front trail braking, making the rear a little wider so he can be more square at corner exit. With his heavy lean angle, he gets more traction and good drive. Notice how heavy and early he rear brakes.
6838:stoner.jpg]

Valentino is complaining about the soft carcass front because it compresses too much under the extreme force of his trail braking. The front travel pre tip in can be adjusted, but once that front is loaded, he needs the hard carcasss to absorb his trail.


Pedrosa is a strange exception, but his style is very complex and the reason he doesn't battle very well.
 

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<div class='quotetop'>QUOTE (clarkjw @ May 8 2009, 10:09 AM) <{POST_SNAPBACK}><div class='quotemain'>Lex and Bab's, you've started an interesting discussion.

First, most riders trail (front) brake and load the inside front through the apex in TIGHT corners. They may come off a bit before tip in, but are back on as they approach apex. It allows them to carry more corner speed but stil get the bike turned. It's impossible to 'sweep' a corner without this. Without trail braking, their rear tires would be on the rumble strip. I actually looked specifically for this and saw it all race at Motegi (10 feet away).

I think the perception that Stoner trail brakes with the rear pre apex is not totally accurate. HE GETS THE BIKE MORE SQUARE before the corner apex/acceleration point. Heavily braking the rear at his initial braking point allows LESS front load before tip in and later braking (more front load during trail). We've all seem him use the brake to slide the rear before tip in, but he's well off it before the apex. Nicky sometimes uses the rear to square up AFTER the apex.

You'll notice how great Stoner is at and after the apex. None of that burn out powerslide after the apex like Melandri and Hayden sometimes did in 2006. I actually can't recall Stoner ever sliding POST apex. His rear is planted and his lean angle deep (more rear traction). He's front trail braking, making the rear a little wider so he can be more square at corner exit. With his heavy lean angle, he gets more traction and good drive. Notice how heavy and early he rear brakes.
6838:stoner.jpg]

Valentino is complaining about the soft carcass front because it compresses too much under the extreme force of his trail braking. The front travel pre tip in can be adjusted, but once that front is loaded, he needs the hard carcasss to absorb his trail.


Pedrosa is a strange exception, but his style is very complex and the reason he doesn't battle very well.

I think Stoner squares the bike with the rear brake. Stoner runs with very little engine braking because it allows him to slow the bike with the rear end. If you remember at Mugello last year, the engine braking wasn't controlling engine deceleration properly and Stoner had to pull the clutch in during corner entry to keep from locking the rear in the braking areas.

I think Stoner squares the corner with the rear brake as the revs drop and engine braking loses its affect. He uses less front trail so a majority of the forces on the front wheel are used to generate centripetal force.

I'm quite certain a majority of the Ducati riders are experiencing difficulties getting feedback from the front. When they use the setting to create more forward bias and get feel in the tire, they find that they can't carry as much speed through the corners. When they use Stoner's settings they can't feel the front so they are timid when tipping it in.

It creates the illusion that the bike is impossible to ride. It is completely counter-intuitive for a rider to feel the front end washing out during entry and think "Hmmmm in need to go in 10kph faster next time". Instead they are trained to grab a bit more front brake or come in and adjust the settings to get more more weight/compression in the front.

I also think Stoner uses much less countersteer at the apex. If you look closely he lets the front wheel pull itself into the turn (like he's letting it tuck). But on a rear-wheel biased bike, letting the front pull itself into the turns is what creates cornering load at the front and eliminates the vagueness.
 
<div class='quotetop'>QUOTE (mylexicon @ May 8 2009, 06:00 PM) <{POST_SNAPBACK}><div class='quotemain'>I think Stoner squares the bike with the rear brake.
Maybe...but not post apex.

He uses less front trail so a majority of the forces on the front wheel are used to generate centripetal force.
If he's using less front trail, why did he always like the hardest carcass tire?

I'm quite certain a majority of the Ducati riders are experiencing difficulties getting feedback from the front.
Nicky disagrees

I also think Stoner uses much less countersteer at the apex.
My point was that Stoner is square by the apex, not needing countersteer then. He clearly is countersteering on corner entry. See picture.
I hope this doesn't come off as combative, just discussing.
 
<div class='quotetop'>QUOTE (clarkjw @ May 8 2009, 11:31 AM) <{POST_SNAPBACK}><div class='quotemain'>I hope this doesn't come off as combative, just discussing.

Not combative.

I don't think he uses rear brake after the apex (sadly this isn't the 990 era
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). I think using the rear brake tightens the line of the rear wheel and it stops the bike from standing up when the front pulls itself into the apex. I say it is ingenious because unlike raising the ride height (another way to keep the bike down) dragging the rear brake doesn't affect flickability.

Casey once used the hardest tires Bridgestone had to offer, but I believe Bridgestone dropped his tires last year after Qatar. I think you will remember that Casey had quite a bit of trouble adapting to the new front and so did Ducati for that matter. Jerez 2008 was awful as was Estoril, and LeMans. China was mediocre but he was miles from Vale and Pedrosa. Stoner and Ducati didn't start making the correct adjustments until Mugello and by Donnington they were the front runners.

Nicky said early on that the front end feel was amazing. More recently; however, Nicky has stated that the front end doesn't give much warning before it lets go. I think he's been told by the paddock that if he wants to improve he needs to ride with settings more similar to Casey's. It has been difficult for him.
 
<div class='quotetop'>QUOTE (clarkjw @ May 8 2009, 07:09 PM) <{POST_SNAPBACK}><div class='quotemain'>First, most riders trail (front) brake and load the inside front through the apex in TIGHT corners. They may come off a bit before tip in, but are back on as they approach apex. It allows them to carry more corner speed but stil get the bike turned. It's impossible to 'sweep' a corner without this. Without trail braking, their rear tires would be on the rumble strip. I actually looked specifically for this and saw it all race at Motegi (10 feet away).

First, I thought trail braking were by defenition something you did with the rear brake but I was obviously wrong there.

Secondly, what you say here is quite surpricing. After all, they have only so much grip and I would have thought they wanted it all for turning the bike at the apex, but you say they use part of it for braking through the apex in tight corners. I'll have to check this out my self.
I'm a bit confuesed about your description of the braking into the corners. Surly it will differ a lot from corner to corner. But trail or not, they will allways enter the turn with as much speed as possible and unless it's an initially sharp turn with increasing radius there will be anything from some to a lot of hard braking entering the turn, before and after initial tip in.
 
<div class='quotetop'>QUOTE (Babelfish @ May 9 2009, 09:42 AM) <{POST_SNAPBACK}><div class='quotemain'>I'm a bit confuesed about your description of the braking into the corners. Surly it will differ a lot from corner to corner. But trail or not, they will allways enter the turn with as much speed as possible and unless it's an initially sharp turn with increasing radius there will be anything from some to a lot of hard braking entering the turn, before and after initial tip in.
On a tight turn coming from a straight, the rider will brake hard (front and rear) when he's upright before tip in, then the bike gets leaned with the front aimed toward apex as he reduces braking force. This is the normal part every street rider does entering a turn. What racers often do is navigate the corner with some trail braking, which allows them to enter at higher speed without going over the rumble. They arrive at the apex faster and squarer this way. By the time they hit mid corner (apex), they are back to the 'normal' riding, accelerating out from the apex.

Yeah trailing is any braking at lean/corner entry.You'll take .3 or more off every corner next track day if you do it right. You could also lowslide or run wide quite easily
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Grip increases at lean angle, but with no power going to the wheel, it has a stopping force. A guy like Casey is always done turning by apex, which is why he gets better corner drive than the other Ducatis. Nicky seems to correct post apex or not carry enough speed pre apex.

Lex, I think you're a bit off on the physics of braking at high speed. Using the rear at lean stands the bike up. Trail braking the FRONT pivots the bike's rear wheel. Example: In a tight right hand turn, trail braking the front end pushes the rear of the bike toward the left fork, allowing it to sweep.

I'll try to find a video, I think KTM has a good one.
Toward the end you'll see his hand on the brake navigating a left turn. This guy also counter steers alot too, but don't get those confused.
http://ktm.com/1190-RC8.100204.20.html
 
Will that be an open test for Bayliss? Be nice to go & watch it.
 
<div class='quotetop'>QUOTE (Goatboy @ May 9 2009, 11:13 AM) <{POST_SNAPBACK}><div class='quotemain'>Will that be an open test for Bayliss? Be nice to go & watch it.
It'll be a closed test. Sorry, you'll have to sneak in.
 
There's several explanations, could be Ducati want's Troy's input, maybe they want to lure him back from retirement to race for them, but IMO the mostl likely option it's just a marketing event to sell a few more Ducatis and say thanks to Troy.
 
<div class='quotetop'>QUOTE (Teomolca @ May 9 2009, 05:28 PM) <{POST_SNAPBACK}><div class='quotemain'>There's several explanations, could be Ducati want's Troy's input, maybe they want to lure him back from retirement to race for them, but IMO the mostl likely option it's just a marketing event to sell a few more Ducatis and say thanks to Troy.
yep!

i remember troy saying that there would be a few of these type of events for him in his life after racing...
 
<div class='quotetop'>QUOTE (clarkjw @ May 9 2009, 06:38 AM) <{POST_SNAPBACK}><div class='quotemain'>On a tight turn coming from a straight, the rider will brake ... allowing it to sweep.

So to summerize not combatively just for facts and understanding.

Initial braking:

Hard front braking 99.999% of weight on front tire machine straight up.

Front tire contact patch maximized by being forced into the track for maximum grip.

Rear brake not applied as there is no load on rear of machine.

Engine braking adjusted as per rider request


Tip in:
Countersteer and lean machine to maximum lean angle while gradually lessening front brake load setting up apex position

Balance of front brake force and cornering force to keep contact patch in maximum adhesion to limit of traction

Trail front brake to keep forks compressed and steering angle low easing handling

Gradual release of front brakes to slow extension of forks which would tend to exceed traction limit of front tire

Rear brake is applied optionally to pull bike towards apex,stabilize bike and optionally rotate the bike by sliding the rear by creating oversteer

Apex:

Front brake completely released

Throttle is applied at apex to load/ stiffen up chassis which stabilizes the bike shifting weight from the front small contact patch to the rear larger contact patch

Gradual throttle and rider input to bars picks up machine to maximize rear contact patch

Heavy throttle is applied to accelerate away from the corner and complete the final turn in the direction required to set up for the next corner

Rear brake is used to control wheelying
 
Oh come on.... it's all speculations on how someone rides their bikes. Until you see the telemetry data, you can only guess as to what a racer is doing by only observation.

I'm hoping Troy Bayliss replaces Nicky Hayden for the second half of the season.
 
<div class='quotetop'>QUOTE (SuperShinya56 @ May 9 2009, 08:08 PM) <{POST_SNAPBACK}><div class='quotemain'>I'm hoping Troy Bayliss replaces Nicky Hayden for the second half of the season.
and i'm hoping you would .... off and die but i guess neither of our wishes will be met...

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