What's really sad about this entire thread (and my job) is I just read every post!

Wow... it is amazing what some people think they know.

Everything I would of contributed to this conversation of reaching the infamous 200 mph has already been said and now I feel like I just waisted 25 min. of my life haha

 

Look at it as "entertainment" ... but yeah, it is amazing how a simple concept can be so misunderstood.

 

I just wanted to add that ANY car can hit 200 mph, regardless of the horsepower. There are just two words that are relevant, gravity and height. Drive any car off a cliff high enough and it will hit 200 mph !

 

the Zr1 and C6Z06 uses a MN6 yes? they are capable of 200mph. that is all done in 5th gear?

 

The ZR1 has a TR6060 I believe with different internal ratios

 

Wow, I've missed a lot in this post, and probably will not go back 11 pages to read it all.

Comments on the few pages I did read...

Not sure why IRS would be a limiting factor in top end, but I've done 197.5 with my IRS and will probably do 216 by the time I get everything else straightened out.

That BMW is not going to go 226 in a standing mile with those HP numbers. No way. The all-wheel drive turbo Evo that won the Hot Rod Magazine Top Speed Challenge in '08 has about 800hp and only did 210.

Doing 150 in a 1/4 is great, and a car that has the kind of power and traction to do that probably will have no problems getting to 200 in a standing mile, but it is harder than you think to pick up another 50mph in the other 3/4 of a mile. Think about how fast that other 3/4 is going by when you enter it at 150. Another issue is that the car that can hit 150 in the 1/4 might not be geared to go any faster than that. He might be topped out in 4th at exactly 1/4 mile. Maybe he still has 5th, but he may not be able to pull as hard in overdrive. My car is .75 in 5th and I can pull the hell out of it, with the right application of power (aka a 300 shot of nitrous).

Hot Rod Magazine did an article where they tested a car in the wind tunnel in NC and taping does not help. It did not lower the CDA at all. Waxing the car does not help. A big air dam in the front does. Get the car as low as possible, and have the air dam almost touching the ground. Remove the side mirrors. A correctly designed rear wing can help give the car some downforce in the rear (or at least reduce lift), without adding drag.

See ya,
Sonny

 

Great info Sonny.

Post one of your great speed run videos.

Tom

 

You didn't take physics did you...

An object falling on Earth will fall 9.81 meters per second faster every second (9.81 m/s²). The reason an object reaches a terminal velocity is that the drag force resisting motion is directly proportional to the square of its speed. At low speeds, the drag is much less than the gravitational force and so the object accelerates. As it accelerates, the drag increases, until it equals the weight. Drag also depends on the projected area. This is why things with a large projected area, such as parachutes, have a lower terminal velocity than small objects such as cannon *****.

So no, any car will not hit 200mph even when thrown out of an ariplane.

 

Hey Tom!

Here is my favorite...

http://www.youtube.com/watch?v=j7rSF-HFTEo

See ya,
Sonny

 

Oh yeah, and the coincidence is amazing that I was reading the brand new Vette magazine this morning and saw a 90 ZR1 in there that is making 600hp and it only did 184mph at the texas mile... just shows how much more power is needed to actually get it done in a standing mile. Ron Misjack used his twin turbo viper to outrun Hennessey in his twin turbo viper. Misjack is making about 1500hp, and did 236mph or so.

My car is about 9-something hundred with the juice, and if I could actually keep the pressure up all the way through the run, it should easily do 216 at 7200 rpms. The motor should be able to spin up to 7500 pretty easily, and if it did it means 226 or something... I'd have to recalculate. That F-body calculator is the same one I have used for years.

 

you da Man Sonny

That 200 Club Member shirt will be your soon

 

WOW 900 something HP.

Forget the gearing guys. HP and LOTS OF HP is whats needed to hit the 200 club

 

http://www.autoweek.com/article/20090111/FREE/901119964

 

Go Jag. Nice to see more of the manufacturers out doing land speed racing. I'd estimate that they'd probably do about 175 or so in a standing mile. I'd love to have 7 miles or more to run... I'd love to see what I could do with that kind of distance.

 

Well, I'll be attempting this in a few weeks. 28 inch tire, 3.73 gear, 550ish rwhp. 7000 rpm will be 211 mph. 200 should be between 6 and 7k. :-)

 

where are you going for this attempt?

 

Torque is not a measurement of power, it's a rotational force.

Yes, the engine creates torque, the pistons cause a twisting force on the crankshaft. But, if you take the torque and rpm and convert it to horsepower it becomes a much easier number to work with.

Horsepower is a measurement of engine power output (the useful power at the crankshaft). You can calculate (at least estimate) how much work you have to do to move a car at 200mph. This will tell you how much hp you need to reach 200mph and you'd better have even more power to be capable of accelerating to this speed in a reasonable amount of time.

You can use hp easily to calculate losses. Say 5th gear is 85% efficient and the diff is 95% efficient. 600fwhp @ 5500rpm x 85% x 95% = 485hp at the rear wheels pushing the car forward. Horsepower makes the math easier. To use torque, you'd have to calculate using the gear ratios and tire diameter to get a force pushing the car ahead.

WTF is a transpose???? The 2 values are related by a mathematical formula.

There's really not much more to say because I really doubt you'll understand or care to learn. I first though you were a newbie just here to stir the **** but it appears you've been around for a while.

Peter

 

hmmm....haven't though that far ahead, but it doesn't have to be close! I have quit a few hundred miles of break in to do!

 

Ahh, I thought you were going to a scheduled organized event somewhere. I would not recommend trying to do it on public roads somewhere. If you go to a sanctioned event, you will have to be able to pass tech for whatever speed it is that you have as your goal. Unfortunately, there is a LOT of safety equipment involved in passing tech for 200. 175, not as much, but still more than most people want to do to their cars. The next event at Maxton is in the spring and the event list is on their website... http://ecta-lsr.com/

 

I think my formula works best