996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Raced with 600cc Bike

Old Jul 25, 2005 | 06:13 PM
  #31  
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I'd still put my money on a properly driven liter + bike vs and car under 700 hp that is a full on street car, not a drag car.
 
Old Jul 25, 2005 | 06:27 PM
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Originally posted by deputydog95
We're not talking about who can hit the highest top speed. We're talking about getting to 160+ the fastest. There is no doubt that bike are limited in their top speed by aerodymanics. Hence the creation of the Hayabusa and the Zx12.

Yes, I have raced TT's and host of other cars. None could hang. Can't tell you if the TT's were modded or not. I did get beat by a TT on my SV650 once, but that's a 90HP twin. Nothing has come close to my aprilia or my ZX10.

Joe:
There is a tremendous difference in rolling off the throttle at 13K vs 7K. You ought to know this as an ex track rider. There is a lot of engine drag at 13K. I haven't seen the video you're talking about, but a lot of riders sit up at the end of the race to relax and slow down. Almost acts like a drag chute and will slow you down very quickly.

Doesn't sound like any of the nine bikes you've owned (assuming your favorites were listed) can even come close to today's performance standard. You ought to take a modern superbike for a ride.

It is my understanding that drag on bikes only comes into play at hyper speeds (190 plus). And when I'm referring to bikes, I'm not talking about naked bikes or sport tourers, but modern liter super bikes.

Do you have any drag coefficient numbers for the TT or a bike? I have a hard time believing that a rider in a full tuck on a superbike has a worse drag coefficient than a TT. And even if it is worse, I can't imagine significantly so.

Did any of you watch the 700HP vette get stomped by a stock Zx10 and a busa on spray? I love our Pcars, but come on people...
Aerodynamic drag on a modern sportbike becomes a factor at about 120-140 for a 600, and at about 150 for a literbike. From a roll 150-top speed, even a stock 996TT should beat a stock literbike. BTW pro riders sit up at the end of long straights to slow down too- Ben Bostrom hit about 225 in his Ducati, which was at the time a record in SBK, and not knowing how fast he was going almost blew him off the bike. Hayabusas do a little better aero-wise than track-capable sportbikes. Honda is rumored to be coming back with a new V-5 powered Blackbird.

Still, at highway speed to 150-160, you better come with a car like Shank's Viper or similar monster if you hope to beat a literbike. Anyone with a stock or Stage whatever 996TT that beats a literbike below 150 either ran into a rider that didn't know what he was doing or the bike wasn't racing you.
 
Old Jul 25, 2005 | 06:36 PM
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i just have to chime in on this thread. i think alot of people have no clue just how fast the new wave of liter bikes are. i have a zx-10, and i couldn't imagine a car pulling on me, from any speed. the bike is absolutely explosive even if you crack the throttle around 130-140. they pull stupid hard everywhere in their powerband. i've only had my zx up in the 170s, and it gets there so fast its silly.

if you pulled on a 600 your car is fast. if you pull on a new 1000 they either didn't know you were there, or you have about 1000whp.

in the corners its another thing, bikes are almost impossible to ride to their limits for 99% of riders. ( i'm not one of those riders )
 
Old Jul 25, 2005 | 07:00 PM
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Originally posted by deputydog95
Full fairing race bikes have great aerodynamics, and they are certainly much better than a car. Do you even own a bike or have any experience riding at high speeds? Not trying to bag on you, but the reason bikes slow down so quickly when they roll of the throttle is engine braking. They slow down really quickly at any speed if the rpm's are high enough. When you roll off the throttle at 13K it creates quite a bit of engine drag. At lower rpm's it's not as much of an issue. Go run your porshe up to 7K in first, chop the thottle, and tell me what happens

Quoted from sportrider.com

"The ZX-12R has a frontal area of 6.09 ft2 (0.566 m2), physically larger than the Hayabusa, which is 6.01 ft2 (0.558 m2 ). But the advantage for the Suzuki is not just in frontal area. With figures for both drag and frontal area, it's possible to calculate the coefficient of drag, which is 0.603 for the 12R and 0.561 for the Hayabusa. The winner of this wind tunnel shootout is the Suzuki.

It's worth remembering, however, that neither of these CD figures indicate a particularly impressive degree of streamlining, since even a typical passenger car has a CD of less than 0.60 and some models are lower than 0.30."

The new Z06 is .26. Sport bikes are a brick, plain and simple. I pray that your riding skills far exceed your knowledge of such machines.
 
Old Jul 25, 2005 | 07:45 PM
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Originally posted by deputydog95
Yeah, but how many people on this board have 1000HP TT's ?
Never said a car couldn't beat a bike, put enough HP in the equation and anything is possible.



Did you see the video I posted? The sprayed busa and the stock ten both take the supercharged vette from a roll on.

Who's killer angel CJV?
Good response I like to keep it that way .............. otherwise it is bad for business.
 
Old Jul 25, 2005 | 07:49 PM
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It sure is fun to come home from a day of riding my zx-6r and read this tread. Without any doubt I know my bike is faster (0-100, 60-150, 1/4 miles, etc...) than my modded TT. Sorry, I wish it wasn't so, but it is. Today's 6's are faster than most 5 year old litres, and today's liter bikes are simply stupid fast. The zx-10r makes 75hp at 3k rpms and it keeps climbing rapidly all the way to 13k+. the dyno plot is insane.

That said a few weeks ago my buddy and I in his chipped Gt2 ran a 00 or 01 gsx1000 from a light and through some sweepers and down a straight. It was pretty close and he was struggling hard to keep the front down. At the next light he stopped and exclaimed how amazed he was at how fast the gt2 was. We laughed, because both of us being bike riders too knew he should have walked away from us. He just didn't have the skills to do it.

So perhaps the answer is that with average drivers in both the turbo might be faster, since it takes a special driver to push the bike to its full potential and pretty much any moron with a fat paycheck can go fast in a tuned car.

Oh and the motoGP lap times are pretty similar to the World Challenge GT car laps times. Where a slightly modded TT would fit class wise. If that means anything... [edit - maybe they are closer to rolex Gt and prototype times actually...but close either way]

fun thread any ways....
-dave w
 

Last edited by DAVE W; Jul 25, 2005 at 08:22 PM.
Old Jul 25, 2005 | 07:49 PM
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Originally posted by aaronlosey
i just have to chime in on this thread. i think alot of people have no clue just how fast the new wave of liter bikes are. i have a zx-10, and i couldn't imagine a car pulling on me, from any speed. the bike is absolutely explosive even if you crack the throttle around 130-140. they pull stupid hard everywhere in their powerband. i've only had my zx up in the 170s, and it gets there so fast its silly.

if you pulled on a 600 your car is fast. if you pull on a new 1000 they either didn't know you were there, or you have about 1000whp.

in the corners its another thing, bikes are almost impossible to ride to their limits for 99% of riders. ( i'm not one of those riders )
aaron,

Funny I was thinking the same thing. Couldn't imagine any street legal bike pulling on KA in any gear.
 
Old Jul 25, 2005 | 07:50 PM
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I have an R1 and TT and can tell you, starting at any speed under 100 a TT (modded or not) has no chance, once you start getting to 150 or so I have no doubt the TT would start to gain though...
Evan
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Last edited by AMG ETR; Jul 25, 2005 at 07:56 PM.
Old Jul 25, 2005 | 07:55 PM
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Evan,

I don't believe you could keep your front wheel on the ground to stay up with KA. If you keep it on the ground you won't be connecting to the road.

Bit of advise ............... if we ever ran, don't line up on my right side.
 

Last edited by cjv; Jul 25, 2005 at 07:58 PM.
Old Jul 25, 2005 | 07:57 PM
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Originally posted by cjv
Evan,

I don't believe you could keep your front wheel on the ground to stay up with KA. If you keep it on the ground you won't be connecting to the road.

Bit of advise ............... if we ever ran, don't line up on my right side.
Your car is the exception to every rule When I say modded TT, I mean like a 600-700HP one
 
Old Jul 25, 2005 | 08:11 PM
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Originally posted by AMG ETR
Your car is the exception to every rule When I say modded TT, I mean like a 600-700HP one
Evan,

I had to smile when you said that. I once had a Busa casually pull up at a light in between KA and another car on my right. He looked at me as if what are you going to do about it. We did a little burn out before the light turned. That moved KA from about two feet away from the Busa to about six inches. The biker's eyes became very wide. When the light turned the bike pulled on KA by about six feet and then his front tire raised. That was all she wrote, we passed her like she was standing still. At the next light he didn't come along side or even use the empty right hand lane.
 

Last edited by cjv; Jul 25, 2005 at 09:02 PM.
Old Jul 25, 2005 | 08:21 PM
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yeah well my f/a-18 hornet will smoke KA from mach 1 to mach 1.8 anyday....

nice story....I love it when people do that to me at lights (kill me, that is).

-dw
 
Old Jul 25, 2005 | 09:18 PM
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Originally posted by DAVE W
yeah well my f/a-18 hornet will smoke KA from mach 1 to mach 1.8 anyday....

nice story....I love it when people do that to me at lights (kill me, that is).

-dw
I guess the moral of the story is: be very careful about which moron with a fat paycheck you decide share the same lane with. Then again, this couldn't possibly apply to me as I'm retired and don't draw a paycheck.
 

Last edited by cjv; Jul 25, 2005 at 09:26 PM.
Old Jul 25, 2005 | 11:48 PM
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Originally posted by cjv
Bill,

It is my experience most modded turbo's will not hit 200+ and definitely not easily. To attain this speed requires changing the final gear and/or raising the redline. To clarify this statement, speedo readings don't cut it. They read far faster than you are actually going.
From Ruf regarding the 490 HP Turbo R:

To find out if the vehicle is a real Turbo R, the car should travel 195 MPH at exactly 7200 RPM with factory gearing. This is increased to 205 MPH with the upgraded Ruf sixth gear.

If I recall correctly, Roland's 993 TT hit 217 MPH. I think Ruf raised his redline. Ruf 996 TTs can exceed 220 MPH with Ruf gearing and raised redlines.
 
Old Jul 26, 2005 | 01:22 AM
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Originally posted by Bill S
From Ruf regarding the 490 HP Turbo R:

To find out if the vehicle is a real Turbo R, the car should travel 195 MPH at exactly 7200 RPM with factory gearing. This is increased to 205 MPH with the upgraded Ruf sixth gear.

If I recall correctly, Roland's 993 TT hit 217 MPH. I think Ruf raised his redline. Ruf 996 TTs can exceed 220 MPH with Ruf gearing and raised redlines.
No argument with the above. The Ruf's that exceed 200 mph have raised the redline and/or changed the final drive gear.

One other item that will raise top speed providing you have the additional ponies to push them is the tire OD.

However, simply adding power without changing and of the above will make your car quicker, but not faster.
 

Last edited by cjv; Jul 26, 2005 at 01:28 AM.

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