A post for hot rodders....

Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff

DTR member's Truck Stolen

I really was looking for YOUR new car but...

This was E-mailed to me today and I thought you guys would enjoy it.



OK - This is for all you gear heads out there... ... ... ... ... ... .



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

the first 6 rows at the Daytona 500.



Under full throttle, a dragster engine consumes 1½ 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 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.



* In order to exceed 300 mph in 4. 5 seconds dragsters must accelerate at an

average of over 4G's. In order to reach 200 mph well before half-track, the

launch acceleration approaches 8G's.



* Dragsters reach over 300 miles per hour before you have completed reading

this sentence.



* 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 9500rpm.



* The Bottom Line; Assuming all the equipment is paid off, the crew worked

for free, and for once NOTHING BLOWS UP, each run costs an estimated US

$1,000. 00 per second. The current Top Fuel dragster elapsed time record is

4. 441 seconds for the quarter mile (10/05/03, Tony Schumacher). The top

speed record is 333. 00 mph (533 km/h) as measured over the last 66' of the

run (09/28/03 Doug Kalitta).



*Putting all of this into perspective:



*You are driving the average $140,000 Lingenfelter "twin-turbo" powered

Corvette Z06 (or blown Viper). 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 past the dragster at an honest

200 mph. The 'tree' goes green for both of you at that moment. 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 1320 foot long race course.



*That, folks, is acceleration.
 
I should've known better !

I printed the previous post and threw it in the coffee mess. Unfortunately, I work around real computer nerds (engineers) and it didn't take too long for one of 'em to point out that at 200mph it takes 4. 5 seconds to cover a quarter mile and with the current world record being 4. 441 seconds the blasting past comment seems to be a little skewed.



should be: whooped him by a bit in a quarter mile... . nerer the less, very impressive acceleration... ...
 
With a closure rate of 130 mph and the amount of air being moved around the vehicle at 330 mph it would indeed be "blasting past" you. It might not be beating you by much as far as time or distance but it would blast on by! I raced a 7 second rail on my 11. 5 second bike one time and when he blasted past me (closure rate of about 80 mph) it indeed nearly blew me off the track.
 
For kicks I did the math real quick, . 060 seconds at 320 mph equates to 28. 14' That's a noticeable difference



-Will
 
oh great ! nerd fodder !!

I'll share these observations on Monday and I'm sure they will engender enflamed pencil protectors, abused pencils, rapid PDA movement and at least one slide rule observation. . :cool:
 
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