* 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 than 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 off its 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.
John force runs 5 percylinder, 2 inside the valve cover. They are mechanical though as electronic engine controlls are not permitted.
Well, and that all the HP #'s are estimates, as there isn't really a dyno that can measure them
True, they heva to estimate the near 8000HP as no dynos will read 1/2 of that figure.A nitro burning V-8 expends 400 of it's 7000 hp just to drive the supercharger. The equivalent of a Corvette Z06 engine just to spin the blower.
-At "the hit", with the car's clutch at maximum slippage, 4500 of those horses will be dissipated as heat alone.
-It takes 30 hp just to spin each fuel pump, with each pump flowing as much as 1.2 gallons per second at 530 psi.
-For every 15 seconds a funny car idles, the fuel load dwindles by a gallon at the nose. Idle too long and you'll throw weight shift out of whack.
-One brief burnout, followed by a 4.73 sec pass, will consume 15 gallons of nitro, at $15.75 per. But the average pass costs $2000 a second.
-At launch, the car pulls 5.0g of acceleration, holds 4.0g for 2.5 to 3.0 sec, then pulls 4.0 negative g when the chutes blast open. This caused racer Joe Amato to retire from racing when he couldn't keep his retinas attached.
-From rest, the car achieves 100 mph in 1.2 sec, and does so in just 100 ft, or four times it's own length. At half track, or 660 ft, the car hits 260 mph
In the same vein, I'll mention the now deceased Col. John Paul Stapp. A man who tested the limits of human G loading:
On December 10, 1954, Stapp strapped himself into a rocket sled and was accelerated to 632 mph. At this point he was decelerated in 1.2 seconds!
This acceleration was in excess of 40 Gs! His body weight was momentarily about 6800 lbs. Wind blast and deceleration were equivalent to a high-altitude ejection at supersonic speed.
Here is an account of what he experienced:
Col. Stapp reported: "It felt as though my eyes were being pulled out of my head . . .I lifted my eyelids with my fingers, but I couldn't see a thing . . ..They put me on a stretcher, and in a minute or two I saw some blue specks . . . In about eight minutes . . . I saw one of the surgeons wiggle his fingers at me, and I was able to count them. Then I knew my retinas had not been detached, and that I wasn't going to be blind."
this is considered the worst explosion in NHRA historyh and still stands
caused by a ignition chip fireing at the wrong time when the valves were still open