Close ratio gears?

Crash · 01-22-2009, 07:51 PM

Quote:

Originally Posted by tvfreakazoid

So, is the gear ratio set up good on the 370? What will need to be done to hit 200mph on the 370? I wonder if there is any video out for a 350 doing 200+?

Yes, that's a good setup. Top end (theoretically) is above 200MPH with this current gearing, however, you'd need a LOT more power to get the car to 200MPH. Lets say for argument's sake, double the power you've currently got. The faster you go, the more drag you have... Drag is caused by 2 different issues on the car: 1) the aerodynamics of the car's body, and 2) the rolling resistance of the tires. The faster you go, the more both of these dragging variables increase. There is actually math you can do to figure exactly how much power you'll need to beat these forces and get the car to 200MPH.

Keep this in mind: A Corvette ZR1 weighs about 100Lbs more than the 370Z and has 638HP. It's drag coefficient is LOWER than the Z's and the rolling resistance is almost identical. The top speed on the ZR1 is approx 206MPH. Keep in mind, that car was designed to reach that speed and has the correct suspension to do so. A Z would need a suspension over-haul, better aerodynamics, and WAY better tires to achieve the same goal with 640HP. The Z is not designed for straight line performance. It's designed for the canyons, and as far as I know, there's not a single canyon you can break 130MPH in.

Black kNight · 01-28-2009, 08:01 AM

but how can we make the 370z aerodynamic better ???
is there any way

Lug · 01-28-2009, 12:04 PM

Quote:

Originally Posted by Black kNight

but how can we make the 370z aerodynamic better ???
is there any way

With sport package it has a .29 drag coefficient. That is excellent.

Crash · 01-28-2009, 05:58 PM

^^^ Lamborghini diablo has a .19 drg.c and the C5 Corvette has a .21 drg.c. I don't think .29 is that great, IMO. But to reduce drag, you can do quite a bit. First off, a belly cover is a good idea. Most expensive high performance cars have them because they reduce the air bubble under the car preventing lift. Next, you need lower rolling resistance tires... (This only reduces drag and it's not good to go fast without grip, so I don't recommend this). You'll need a good front aero kit. Not every body package removes drag... Some add drag. So you need to pick wisely. Next, fold in your side mirrors (or remove them) and remove your wind shield wiper.

At speeds of 120+Mph, you don't need them anyway. Then you'll need to lower the car as much as possible. Stiffer suspension would be required to handle the down force. You'll need to shave your door handles and anything sticking out of the car in any way shape or form, you'll need to remove.

All that should get you down to .27 or .26 Drg.c LOL!

Lug · 01-28-2009, 06:25 PM

Quote:

Originally Posted by Crash

^^^ Lamborghini diablo has a .19 drg.c and the C5 Corvette has a .21 drg.c. I don't think .29 is that great, IMO. But to reduce drag, you can do quite a bit. First off, a belly cover is a good idea. Most expensive high performance cars have them because they reduce the air bubble under the car preventing lift. Next, you need lower rolling resistance tires... (This only reduces drag and it's not good to go fast without grip, so I don't recommend this). You'll need a good front aero kit. Not every body package removes drag... Some add drag. So you need to pick wisely. Next, fold in your side mirrors (or remove them) and remove your wind shield wiper.

At speeds of 120+Mph, you don't need them anyway. Then you'll need to lower the car as much as possible. Stiffer suspension would be required to handle the down force. You'll need to shave your door handles and anything sticking out of the car in any way shape or form, you'll need to remove.

All that should get you down to .27 or .26 Drg.c LOL!

A C5 vette has a .29 drag coefficient in stock form. A C6 is .28.

Crash · 01-28-2009, 06:27 PM

LOL! You're right. I wonder where I got .21...

Hrmmm...

Lug · 01-30-2009, 11:50 AM

Quote:

Originally Posted by Crash

LOL! You're right. I wonder where I got .21...

Hrmmm...

I'm guessing a bullet?

Crash · 01-30-2009, 12:57 PM

Never heard of a .21. .22 maybe...

I did all sorts of research on drag coefficients when I was researching a donor for an electric car project, and for some reason, I remember seeing the vette as .21. But I wiki'd it and it IS .28

I hope my memory isn't going...

Lug · 01-30-2009, 01:05 PM

Quote:

Originally Posted by Crash

I hope my memory isn't going...

I hear it's the 2nd thing to go, but I've forgotten who told me this.

Crash · 01-30-2009, 04:44 PM

^^^ LOL! I'm 25... I BETTER not be losing my memory yet!

01-28-2009, 05:58 PM	#19 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 589	^^^ Lamborghini diablo has a .19 drg.c and the C5 Corvette has a .21 drg.c. I don't think .29 is that great, IMO. But to reduce drag, you can do quite a bit. First off, a belly cover is a good idea. Most expensive high performance cars have them because they reduce the air bubble under the car preventing lift. Next, you need lower rolling resistance tires... (This only reduces drag and it's not good to go fast without grip, so I don't recommend this). You'll need a good front aero kit. Not every body package removes drag... Some add drag. So you need to pick wisely. Next, fold in your side mirrors (or remove them) and remove your wind shield wiper. At speeds of 120+Mph, you don't need them anyway. Then you'll need to lower the car as much as possible. Stiffer suspension would be required to handle the down force. You'll need to shave your door handles and anything sticking out of the car in any way shape or form, you'll need to remove. All that should get you down to .27 or .26 Drg.c LOL! __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

01-28-2009, 06:27 PM	#21 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 589	LOL! You're right. I wonder where I got .21... Hrmmm... __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

01-30-2009, 12:57 PM	#23 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 589	Never heard of a .21. .22 maybe... I did all sorts of research on drag coefficients when I was researching a donor for an electric car project, and for some reason, I remember seeing the vette as .21. But I wiki'd it and it IS .28 I hope my memory isn't going... __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

01-30-2009, 04:44 PM	#25 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 589	^^^ LOL! I'm 25... I BETTER not be losing my memory yet! __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

01-28-2009, 08:01 AM	#17 (permalink)
Black kNight Base Member Join Date: Dec 2008 Location: Oman Posts: 239 Drives: Model 2003 MB C-180k Rep Power: 272	but how can we make the 370z aerodynamic better ??? is there any way