I have a manuel 2006 911s. I'm trying to achieve the faster 0-60 time I can. Does anyone have a walk through of gears and rpms? For instance, right now I am going to 5 rpm in first, 6 rpm in second. Is this the best way to do it?

 

http://press.porsche.com/archive/pro...rera_specs.pdf

 

Are you going to overlay the shift points with the toque curve?

 

This isn't going to help him.

 

If you understand "force" you will achieve maximum force therefore maximum acceleration at redline in the first few gears. This is typical of naturally aspirated cars. Force doesn't factor in grip or shift points (or delaying a shift) to achieve a certain time at a predetermined mph. One thing for sure is the more you try the more you'll degrade your rear tires and clutch. Is it worth it? Back to your Q, changing at 5K (vs. redline) in 1st means you're hitting 2nd at a lower rpm and therefore have more rpms to climb through to redline in 2nd. Not ideal. If in 1st your tires aren't hooking up then you have to get out of 1st early or feather the throttle enough to maintain grip, both of which worsen peak acceleration. Simple answer is there's no perfect answer.

 

Thanks all

 

Having drag raced many cars with a manual the first thing you need is practice and lots of it.

Second taking what Steve997S pointed out is important to remember. When you shift gears the RPMs will drop a certain amount based on gear spacing. That means you want to shift as close to red line as you can so when the RPMs drop you will be farther into your power band and thus have more power (hp and tq) available for acceleration.

 

Remind me not to buy this car when you choose to sell it!

 

Have never considered a Porsche as a drag car...nor would I want to...

 

I almost posted to this when the OP started the thread...and then didnt...but now I am...

Why would you ever care how quickly you can do 0-60. Its such a short time. I would think 1/4 mile would be something a bit more useful.

At the same token...I hope you have plenty of money to waste as doing drag after drag will wear the crap out of your car.

 

why post if you can't answer the question?

 

To try and get a better understanding of why you are looking to maximize your 0-60 time. Who knows...maybe there is a fascinating reason.

 

So I find this an interesting academic question, so I'll take a stab at it. I believe you want to maximize the area under the torque curve.

Case 1: Looking at my car (997.1S) the curve starts to drop off abruptly at 6500 rpm. The ratio between 1st and 2nd is 2.32/3.91 = 0.593. So if shifted at 6500, the rpms would drop to 3857. The two rpm lines are shown (approx) in red below.


Case 2: Let's say you shift at 7000 rpm. Then that's a drop to 4153 rpm. Shown below:


So it looks like shifting at 7000rpm+ gives a slightly larger area under the curve. I think if I had the actual graph in excel I could figure it out exactly. But this is power point engineering and I'm a robot guy, so someone else please chime in if my logic is flawed.

 

Edit... I think something is wrong with my rpm drops. I'll look at it tomorrow.

 

http://www.caranddriver.com/features...nd-pdk-feature

from article: see the attached photos below for steps to follow:
"Getting the best zero-to-60 acceleration time out of a Porsche 911 with a manual transmission requires a bit of a sadistic streak. Dropping the clutch in the rear-heavy coupe for a wheelspin-induced launch creates a violent bucking—known as axle hop—that resonates throughout the entire car and feels certain to dislodge a few expensive components. Surprisingly, we’ve found that Porsches survive this punishment unscathed—at least for a few runs. Do it correctly in a Carrera S via the following steps, and you will go from a standstill to 60 mph in less than four seconds. Porsche now offers a launch-control function for its doppelkupplungsgetriebe (German for dual-clutch gearbox), a clutch-pedal–free setup that’s better known by the letters PDK, so now it’s easier to get the best numbers out of a 911. But the affair still requires a penchant for mechanical cruelty.

Disclaimer: Most owners won’t likely subject their cars to this abuse, which is why we created the 5-to-60-mph statistic. In that instance, hard acceleration begins with the car already rolling at 5 mph in first gear and with the clutch engaged. The driver then simply floors the gas pedal, and the clock starts. That test gives a good idea of a vehicle’s real-world acceleration ability. So, when it comes to an all-out maximum acceleration run, it might be best to leave a launch this severe to the experts, and by experts we mean the parking valets at your country club." see photos below for steps to follow.


all these steps apply to all 997 S . By the way, the fastest magazine 0-60 mph and quarter mile for 2005 997 Carrera S was in Road and Track:
0-60 mph 3.9 seconds. Quarter mile 12.3 @ 114 mph.

http://www.roadandtrack.com/car-revi...?click=main_sr


Now, just some words of wisdom. I use to go to 1/4 mile tracks back in the 90's and drag race a Mitsubishi Eclipse GSX that I modified to 475 hp. My best times at the drag race were 11.7 @ 120mph with a 1.6 sec 60 foot time.. It's all about the launch and launching a manual car takes practice, practice and more practice.. with that said... I blew 5 clutches and 1 transmission over the few years I had the car.. Granted, it was not a Porsche, but hard launches are required for best 0-60 mph times and it will take it's toll after a while.

Best of luck on your quest for better 0-60 mph times! One more tip... if you are really, really precise and good at shifting... I can shift through all gears without ever lifting off the throttle or having the nose of the car dip between shifts, but you gotta be fast ! ;^)