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Intresting Read .........


Chevcup47

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For my “car” enthusiast friends:

 

 

 

 

 

Bet you probably did not know this!

 

 

 

 

 

> One Top Fuel 500 cubic-inch Hemi dragster engine makes more horsepower

 

> (8,000 HP) than the first 4 rows at the Daytona 500.

>

> * Under full throttle, a dragster engine consumes 11.2 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 merely

> drive the dragster's supercharger.

>

> * With 3000 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 1.7:1 air/fuel mixture for nitro methane the

> flame front temperature 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.

>

> * 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 a pass. After 1/2

> 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

> the fuel flow.

>

> * If 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.

>

> * Dragsters reach over 300 MPH before you have completed reading this

> sentence.

>

> * In order to exceed 300 MPH in 4.5 seconds, dragsters must accelerate

 

> an average of over 4 G's. In order to reach 200 MPH well before

> half-track, the launch acceleration approaches 8 G's.

>

> * Top Fuel engines turn approximately 540 revolutions from light to

light!

>

> * Including the burnout, the engine must only survive 900 revolutions

> under load.

>

> * The redline is actually quite high at 9500 RPM.

>

> * THE BOTTOM LINE: Assuming all the equipment is paid off, the crew

> worked for free, & for once, NOTHING BLOWS UP, each run costs an

> estimated $1,000 per second.

>

> 0 to 100 MPH in 0.8 seconds (the first 60 feet of the run) 0 to 200

> MPH in 2.2 seconds (the first 350 feet of the run)

> 6 g-forces at the starting line (nothing accelerates faster on land)

> 6 negative g-forces upon deployment of two in 'chutes at 300 MPH

>

>

>

> An NHRA Top Fuel Dragster accelerates quicker than any other land

> vehicle on earth, quicker than a jet fighter plane . . . quicker than

> the space shuttle.

>

> The current Top Fuel dragster elapsed time record is 4.420 seconds for

 

> the quarter-mile (2004, Doug Kalitta). The top speed record is 337.58

> MPH as measured over the last 66' of the run (2005, Tony Schumacher).

>

> Putting this all into perspective:

>

> 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 &

 

> ready to launch down a quarter- mile strip as you pass. You have the

> advantage of a 200 mph flying start. You run the 'Vette hard up

> through the gears and blast across the starting line & pass the

> dragster at an honest 200 MPH. The 'tree' goes green for both of you

at that moment.

>

> The dragster launches & starts after you. You keep your foot down

> hard, but you hear an incredibly brutal whine that sears your eardrums

 

> & within

> 3 seconds the dragster catches & 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

 

> & not only caught, but nearly blasted you off the road when he passed

> you within a mere 1320 foot long race!

>

> That is acceleration! Boy that would put a grin on your face.

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  • 3 weeks later...

cool facts. i love reading about these things, ive read these facts quite a few times and i have never seen this one

 

* Dragsters twist the crank (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

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