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TODAY'S TOP FUEL DIGGERS - NOTHING LIKE THOSE IN THE 60s !!!

To: land-speed@autox.team.net
Subject: TODAY'S TOP FUEL DIGGERS - NOTHING LIKE THOSE IN THE 60s !!!
From: FastmetalBDF@aol.com
Date: Wed, 5 Mar 2003 21:19:36 EST
* One dragster's 500-inch Hemi makes more horsepower then the first 8
 rows at Daytona.

* 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 nitromethane measures 7050 degrees F.

* Nitromethane 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
 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 of it's fuel flow.

* 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 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.

* To exceed 300mph in 4.5 seconds dragsters must accelerate at an
 average of over 4G's. But in reaching 200 mph well before 1/2 track,
 launch acceleration is closer to 8G's.

* If all the equipment is paid off, the crew worked for free, and
 for once NOTHING BLOWS UP, each run costs $1000.00 per second.

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

* Top Fuel Engines ONLY turn 540 revolutions from light to light!

* The redline is actually quite high at 9500rpm

* To give you an idea of this acceleration, the current TF dragster
 elapsed time record is 4.477 seconds for the quarter mile. This
 means that you could be coming across the starting line in your
 average Lingenfelter powered "twin-turbo" Corvette at 200 mph (on a
 FLYING START) and the dragster would BEAT you to the finish line FROM
 A DEAD STOP in a quarter mile distance !!! 
( That's OK, Ed ....your Vette gets much better mileage even at full throttle 
! )

* Not Mentioned above is this difference: The sheer fun a small group of guys
 could have of running a fast drag car, either a fueler or the long-gone
 AA / Gas Dragster class, in those days when it didn't cost $1000 a
 second ...... or $1000 a run ...... it didn't cost $1000 a DAY !!!
                         Much more Bang for the Buck .........
      AS IN ALL ASPECTS OF LIFE ..... NOTHING LASTS FOREVER

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