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jamica joe
01-27-2012, 10:54 AM
A friend of mine sent this to me... This is for all of you gear heads. Not sure that I understand it all but it's cool!!

Joe

Acceleration:
For those who love numbers, engineers, speed freaks and those who think they have gone too fast at one time or another. This puts Corvette performance in perspective. This article mentions Lingenfelter twin turbo powered Z06.
Read this thru slowly and try to comprehend the amount of force produced in just less than 4 seconds! The last paragraph puts it all into perspective!
There are no rockets or airplanes built by any government in the world that can accelerate from a standing start as fast as a Top Fuel Dragster or Funny Car and that includes any aircraft launched by a catapult from an aircraft carrier. Nothing can compare...

Definition of Acceleration:
One top fuel dragster 500 cubic inch Hemi engine makes more horsepower than the first 4 rows of stock cars at the Daytona 500.
It takes just 15/100ths (0.15) of a second for all 6,000+ horsepower (some believe 8,000 HP is more realistic - there are no dynamometers capable of measuring this amount of HP) of an NHRA Top Fuel dragster engine to reach the rear wheels.
Under full throttle, a dragster engine consumes 1-1/2 gallons of nitro methane per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less energy being produced.
A stock Dodge Hemi V8 engine cannot produce enough power to drive the dragster's supercharger.
With 3,000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into a near-solid form before ignition.
Cylinders run on the verge of hydraulic lock at full throttle.
At the stoichiometric (stoichiometry: methodology and technology by which quantities of reactants and products in chemical reactions are determined) 1.7:1 air/fuel mixture of nitro methane, the flame front temperature measures 7,050 deg F. (Oxy-acetylene on "cut" is 6,300 deg F.)
Nitro methane burns yellow. The spectacular white flame seen above the stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.
Dual magnetos supply 44 amps to each spark plug. This is the output of an arc welder in each cylinder. Spark plug electrodes are totally consumed during one pass. After halfway, the engine is dieseling from compression, plus the glow of exhaust valves at 1,400 deg F. The engine can only be shut down by cutting the fuel flow.
If a spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient force to blow cylinder heads off the block in pieces or split the block in half.
In order to exceed 300 mph in 4.5 seconds, dragsters must accelerate an average of over 4G's. In order to reach 200 mph well before half-track, the launch acceleration approaches 8Gs. Dragsters reach over 300 miles per hour before you have completed reading this sentence.
The redline is actually quite high at 9,500 rpm.
Assuming all the equipment is paid for, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimated $1,000.00 per second.
The current top fuel dragster elapsed time record is 4.428 seconds for the quarter mile (11/12/06, Tony Schumacher, at Pomona , CA ). The top speed record is 336.15 mph as measured over the last 66' of the run (05/25/05 Tony Schumacher, at Hebron, OH ).

Putting all of this into perspective:
Imagine, you are driving the average $140,000 Lingenfelter 'twin-turbo' powered Corvette Z06. Over a mile up the road, a top fuel dragster is staged and ready to launch down a quarter mile strip as you pass. You have the advantage of a flying start. You run the 'Vette hard up through the gears and blast across the starting line and pass the dragster at an honest 200 mph. The 'tree' goes green for both of you at that instant.
The dragster launches and starts after you. You keep your foot down hard, but you hear an incredibly brutal whine that sears your eardrums and within 3 seconds, the dragster catches and passes you. He beats you to the finish line, a quarter mile away from where you just passed him.
Think about it, from a standing start, the dragster had spotted you 200 mph and not only caught, but nearly blasted you off the road when he passed you within a mere 1,320 foot long race course.

...and that my friends, is ACCELERATION !!

-V-
01-27-2012, 11:02 AM
wow........and I thought the "dragster" ride at Cedar Point was cool.....

pmkkdx
01-27-2012, 11:35 AM
woah!!! impressive!!! I wanna try it :cool:

GT500 MC
01-27-2012, 11:53 AM
Very good read. Somewhat puts acceleration into laymen terms.

There's nothing like the rush of a TF drag race as the earth feels like it's about to explode.

ahhudgins
01-27-2012, 12:35 PM
My wife and I are going to Charlotte NC again in April for the 4 wide racing. We've been several times the last couple of years and it's a blast. Seriously, the first time you see the Nitro cars it looks unreal and the sound is awesome.

This article has been posted before and some of it is B.S. The engines are not dieseling at half track (that would be a nightmare if the driver blacked out for any reason) and the spark plugs are not melted down at the end of a run. The pit crews give the spark plugs, blower belts, and rear slicks away during the day. It's funny to watch the small kids rolling the huge tires out to the parking lot at the end of the day.

I don't care who wins, I just love the raw power.

j2nh
01-27-2012, 09:27 PM
Great post, thanks!

2RLAKE
01-28-2012, 10:03 AM
My wife and I are going to Charlotte NC again in April for the 4 wide racing. We've been several times the last couple of years and it's a blast. Seriously, the first time you see the Nitro cars it looks unreal and the sound is awesome.

This article has been posted before and some of it is B.S. The engines are not dieseling at half track (that would be a nightmare if the driver blacked out for any reason) and the spark plugs are not melted down at the end of a run. The pit crews give the spark plugs, blower belts, and rear slicks away during the day. It's funny to watch the small kids rolling the huge tires out to the parking lot at the end of the day.

I don't care who wins, I just love the raw power.

agreed ... i had my son at the NHRA in Memphis a few years ago ... we had a sky box and also could stand 30' from the starting line ... we both had ear plugs and ear muffs on .. his line was "i thought my eyes were going to pop out" ... the amount of raw horsepower is incredible, your entire body rumbles ... only in America!!!

ahhudgins
02-04-2012, 08:24 PM
Just to show you how much HP these engines are pushing, skip to 2:00 of the video and at about 2:15 they show you in super slow-motion how much power is being pushed out of the exhaust on these engines.

http://www.youtube.com/watch?v=BxEBwPQFfpw

thatsmrmastercraft
02-04-2012, 11:57 PM
Even if the truth is stretched in a few places, just reading this will bring your heart rate up a little.

2RLAKE
02-05-2012, 09:35 AM
now i miss my '02 197 TT with the LQ9 even more ....

bturner2
02-05-2012, 09:51 AM
Killer article. It's been a long time for me but two of my most memorable motor sports memories are seeing the top fuel cars run and the blown nitro drag boats run. Both are incredible to see run in person. I need to take the kids to the drag strip this summer. Even if they end up not liking it, it is a spectacle to be seen.....