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Drag Racing Facts

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Received this from a Mechanical engineering friend and just knowing very little about drag racing found it interesting. Maybe you guys who know about this can confirm what is being said, and maybe now I understand why Stack'd-n-Jack'd, HVAC and others want so much information.



As individuals interested in ultimate engineering, AA/Fuelers are the

ultimate in land acceleration, I thought you might find this interesting.



ENGINEERS CAN DESIGNS WAY COOL STUFF!!!



NHRA (National Hotrod Racing Association) FACTS



*One dragster's 500-inch Hemi makes more horsepower then the

first 8 rows at Daytona combined.



*Under full throttle, a dragster engine consumes 1-1/2

gallons of nitro per second, the same rate of fuel consumption as a fully

loaded 747 but with 4 times the energy volume.



*The supercharger takes more power to drive then a stock Hemi

makes.



*Even with nearly 3000 CFM of air being rammed in by the

supercharger on overdrive, the fuel mixture is compressed into nearly-solid

form before ignition. Cylinders run on the verge of hydraulic lock.



*Dual magnetos apply 44 amps to each spark plug. This is the

output of an arc welder in each cylinder.



*At stoichiometric (exact) 1. 7:1 air/fuel mixture (for nitro), the flame front of nitro methane measures 7050 degrees 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.



*Spark plug electrodes are totally consumed during a pass.

After ½ way, the engine is dieseling from compression-plus the glow of

exhaust valves at 1400 degrees F. The engine can only be shut down by

cutting off its flow of fuel.



*If spark momentarily fails early in the run, unburned nitro

builds up in those cylinders and then explodes with a force that can blow

cylinder heads off the block in pieces or blow the block in half.



*Dragsters twist the camshaft (torsionally) so far (20

degrees in the big end of the track) that sometimes cam lobes are ground

offset from front to rear to re-phase the valve timing somewhere closer to

synchronization with the pistons.



*To exceed 300mph in 4. 5 seconds dragsters must accelerate at

an average of over 4G's. But in reaching 200 mph well before ½ track,

launch acceleration is closer to 8G's.



*Drivers shut off before the finish line, or even dual

parachutes will not stop the car.



*If all the equipment is paid off, the crew worked for free,

and for once NOTHING BLOWS UP, each run costs $1,000. 00 per second.



*Dragsters reach over 300 miles per hour before you have read

this sentence.



Tidbit of trivia;



If a AA/Fueler was stopped, at a line, on the back straightaway at

Daytona International Speedway and a Winston Cup car approached at full

throttle, say 195/200 MPH, if the dragster took off just as the WC car was

even with the same line. The dragster would catch and pass the WC car

BEFORE 1/4 mile and be pulling away a 300+ MPH.



However, the engine would explode if the driver of the dragster did not shut the engine down just after that 1/4 mile mark.
 
neat stuff, check into formula 1 engine "facts"

for similar phenomenon. 0-100-0mph in 4+seconds is awesome. And those puney F1 engines (3L)develope 850+hp at 18000-19000 rpm and maintain that power for 1. 5 - 2 hrs. :cool:
 
Originally posted by JPope

*One dragster's 500-inch Hemi makes more horsepower then the

first 8 rows at Daytona combined.



Gotta wonder about this one- 16 cars @ an average of 800hp each=12,800 hp. That would be 256 hp/cu in for the Hemi! Can this be true?
 
Re: Re: Drag Racing Facts

Originally posted by Bill Lins





Gotta wonder about this one- 16 cars @ an average of 800hp each=12,800 hp. That would be 256 hp/cu in for the Hemi! Can this be true?



Bill,



800 BHP? Remember, Daytona is a restrictor plate track. :rolleyes: ;)



Rusty
 
I will have to go with Bill Lins on the horse power thing a top fuel car on a 100% tune only makes 750 to 800 horse power per cyclinder if I can still add that is only 6000-6400 horse!!!!!:rolleyes: :rolleyes: :rolleyes:
 
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