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post #1 of 4 (permalink) Old 12-21-03, 09:35 AM Thread Starter
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Top Fuel Dragster Facts

You don't have to be a drag racing fan to appreciate these statistics... Found this on a US Site..

a.. One dragster's 500-inch Hemi makes more horsepower then the first 8 rows at the Daytona 500.
b.. Under full throttle, a dragster engine consumes 1 gallons of nitro per second, the same rate of fuel consumption as a fully loaded Boing747, but with 4 times the energy density.
c.. The supercharger takes more power to drive then a stock hemi makes.
d.. With nearly 3000 CFM (cubic feet per minute) of air being rammed in by the supercharger on
overdrive, the fuel mixture is compressed into nearly-solid form before ignition.
e.. Therefore the cylinders run on the verge of hydraulic lock.
f.. Dual magnetos apply 44 amps to each spark plug. This is the equivalent output of an arc welder in each cylinder.

a.. At stoichiometric (exact) 1.7:1 air/fuel mixture (for nitro), the flame front of nitro methane measures 7050 degrees F.
b.. Nitro methane burns yellow. The spectacular white flame seen above the exhaust stacks at night is raw burning hydrogen, dissociated from atmospheric water vapour by the searing exhaust gases.
c.. Spark plug electrodes are totally consumed during a pass. After way, the engine is dieseling from compression plus the glow of exhaust valves at 1400 degrees F.
d.. The engine can only be shut down by cutting off its fuel flow.
e.. 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.
f.. Dragsters twist the crank (torsionally) so far (up to 20 degrees at the rear end of the crank) that sometimes cam lobes are ground offset from front to rear to re-phase the valve timing somewhere closer to synchronisation with
the pistons.
g.. To exceed 300mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. But in reaching 200 mph well before track, launch acceleration is closer to 8G's.
h.. 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.
i.. Dragsters reach over 300 miles per hour before you have read this sentence.
j.. Top Fuel Engines ONLY turns 540 revolutions from light to light!
k.. The redline is actually quite high at 9500rpm.
l.. To give you an idea of this acceleration, the current Top Fuel dragster elapsed time record is 4.477 seconds for the quarter mile. (400mt)
m.. This means that you could be coming across the starting line in your average SL55 AMG "twin-turbo" Mercedes 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!

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post #2 of 4 (permalink) Old 12-21-03, 02:43 PM
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Re: Top Fuel Dragster Facts

duplicated thread:
original is here

Acceleration in Perspective

Falcon Killer (if you believe what Ford Service Departments have to say about me)
AU II XR6 - October 2001 ~ December 2002 - RIP
BA XR6 - December 2002 ~ Soon to disappear if Ford CRC can't fix it....

45,000km service coming up - and i'll be asking for a sizable list of fixes:
* Gearbox (3rd time)
* Steering click (5th time)
* Brake Shudder (2nd time, and has the applied "Fix")
* etc...
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post #3 of 4 (permalink) Old 12-21-03, 11:29 PM Thread Starter
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Re: Top Fuel Dragster Facts

Well there you go...And the earlier thread well mined..

I found the info on a model power boat discussion forum of all things!!

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post #4 of 4 (permalink) Old 12-22-03, 02:25 AM
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Re: Top Fuel Dragster Facts

MMMM man those things are sweet
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