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Anonymous

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Liam Marsden  says:

Qatar MotoGP: Lorenzo tops first practice of 2013

Reigning world champion Jorge Lorenzo ended the first free practice of 2013 at the top of the timesheets after a late charge. Lorenzo displaced Tech 3 Yamaha rider Cal Crutchlow to finish fastest, Crutchlow finished second ahead of Valentino Rossi to complete a Yamaha top three. Rookie Marc Marquez was the highest-placed non-Yamaha onboard his Repsol Honda in fourth ahead of Ducati...

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  • Posted 2 years ago (04 April 2013 18:59)

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Hedgehog5

Joined:

Aug 02

Posts: 2319

Hedgehog5 says:

Hugs...

"Most riders/drivers believe it's better to cruise past on the straights as it's easier, safer and much kinder on the tyres over to you.."

Yup... & that's why Kawasaki won so many GPs

:blink:

Remind us where the other Ducati's came that day, all of which could top over 310? Yet Yamaha with the slowest came 2nd?... oh, it's doing my head in... please expalin...

:laugh: :laugh: :laugh:

[This Reply has been modified by the Author]

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VeritasH

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Apr 13

Posts: 68

VeritasH says:

A bike might be hitting a higher top speed down the straight, but its the average speed across the full length that counts, which includes corner exit speed, how well the bike initially puts the power down as it exits the corner and how soon you have to start braking at the next. If top speed was everything then the Ducati wouldn't be 1s down.

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yzrm1

Joined:

Jan 11

Posts: 291

yzrm1 says:

NOTRADAMUS

in one previus post i once said good witing. but now your writing realy bad. Because only after 2007 yamaha try'd pneumatic valves. in 2007 Yamaha and honda had spring valves. Yamaha introduced the pneumatic valves to reach more rpm and higher topspeed that wasn't possible with normal springs. Honda waited even longer with pneumatic valves. And even after Yamaha had pneu valves the speed advantage from ducati because of the desmo system was to big. but yamaha did cut the difference in half. 7 kmph still. and little by little Yamaha gained some top speed. now 2012 and Yamaha still not an straight line killer.

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hugelean

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Oct 07

Posts: 1302

hugelean says:

You can discount more than half of Stoners wins in 2007 but for top speed. How may times was he passed in the twisty bits only to blast back past every one on the straight I can think of 3 or 4 without even looking it up.. Sepang springs to mind and it wasn;t the worst. It was laughable, he was making half a second on the main drag then getting caught past on the twisty bits again by Rossi only for the same thing to happen again next lap. This in no way means Casey was lucky you team does the best job it can and if you can make it work(how many factory honda and yam riders have done little?? plenty) then it;s a compettiv epackage and not every can. he did an amazing job but saying the top speed had nothing to do with it is fanboyism at it's purest..

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hello4646

Joined:

Oct 08

Posts: 542

hello4646 says:

As

We keep saying Nostro.  You are living in the past.  2007 is just a memory.  2013 is where it's at. 

Thats all you have to talk about now is the past.  And you are just waiting to put Rossi down. 

 

GONE FISHING

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Hedgehog5

Joined:

Aug 02

Posts: 2319

Hedgehog5 says:

Hugs...

"Sepang springs to mind and it wasn;t the worst. It was laughable, he was making half a second on the main drag then getting caught past on the twisty bits again by Rossi only for the same thing to happen again next lap"

Erm... Rossi & Stoner never shared the same piece of track at Sepang 2007 being separated by, at the very least, 3 riders... Stoner was a full 2kph faster than RdP's Kwak, 3kph faster than the Honda's... or sod all.

Veritas has it. There are a lot more factors than high speed.

[This Reply has been modified by the Author]

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pogo_it

Joined:

Jul 05

Posts: 113

pogo_it says:

speed differences

It may not sound much, but as jeremy mcwilliams once said, try standing still whilest someone walks away from you!

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tris123

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Feb 09

Posts: 229

tris123 says:

speed differences

see losail 2007 on youtube, moaner was MUCH faster on the straight

wasn't just the speed either the brigestone tyres helped a lot also.  kind of proven when rossi won in 2008 & 2009 to prove a point.

wikipedia entry is quite interesting.

MotoGP's 800 cc era officially began with the first race of the 2007 MotoGP season, at the Losail International Circuit in Qatar. Casey Stoner won the race on the new GP7. The bike had a clear top speed advantage over the rest of the grid, due to its higher output motor. A new track record was set on the GP7. Second place contender and five time former World champion, Yamaha's Valentino Rossi, complained that "unfortunately, there was too much difference between (our) bikes in the straight" and "Our Yamaha will never go as quick on a straight as the Ducati." These words turned out to be true, as the GP7 enjoyed a top speed advantage throughout the season, although the other manufacturers (Yamaha, Honda, Kawasaki and Suzuki) closed the gap significantly by the end of the year. Stoner and his Bridgestone-shod Ducati proved to be the top combination in MotoGP and he won the world championship at Motegi, Japan, on September 23, 2007, four races before the end of the season.

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1986vfr750

Joined:

Apr 09

Posts: 478

1986vfr750 says:

for most of the season

Casey had an rpm advantage. The 07 ducati was able to rev to 20,000 rpms...the spring valves of honda and yamaha could only reach 17,500 before they were overwhelmed and couldnt close the valves quickly enough for the next piston stroke...hence pneumatic(air driven) valves for 08. Ducatitis desmodromic system does not operate on springs but rather gears so the valves can open and close dirictly with the movement of the cam....rather than the cam lobe " flicking" the valve open and the spring snapping it shut...the extra 2500 rpms was VERY noticable at quatar 07 where yes rossi would get ahead in the twisty bits and casey would pass him by 1/3 of the way down the straight without even bothering to use the draft. He had a 15-17 km top speed advantage for almost the whole season. Everyone knows this...why pretend otherwise? Casey still had to ride the beast and he wisely took FULL advantage of the top speed...its not his fault the bike was fast. Every year the championship winner enjoys a bit of a machine advantage...except last year...but dani ran out of time and had late season bad luck(misano). His bike was certainly better though at the end. That is another thing ALL champs have as well...good luck during their winning season. These are facts...its silly to say only rossi had good luck or good bikes...EVERY winner enjoys that sweet combination of a great bike and a bit of fortune at the "tipping" points of the season they win in. I dont like casey, but he is fast as hell and a great rider who deserved his titles...as did rossi and and lorenzo.

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1986vfr750

Joined:

Apr 09

Posts: 478

1986vfr750 says:

Now can we please focus on 2013? Its going to be EPIC!!!!!

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