OT, but interesting. A LESSON IN ACCELERATION

A friend sent this to me. While it's not about Camaro's of Firebirds, I thought we might have a few Drag race fans here that would enjoy this.

Gary

A LESSON IN ACCELERATION:

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First, some useful info:

• One NHRA Top Fuel dragster 500 cubic inch Hemi engine makes more

horsepower than all the cars in the first 4 rows at the Daytona 500.

• Under full throttle, a Top Fuel 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 426 Hemi V8 engine cannot produce enough power to 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.

• 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 9500 rpm.

• 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 $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

Putting all of this into perspective for you bikers: You are riding the

average $250,000 Honda MotoGP bike. 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 RC211V hard up

through the gears and blast across the starting line and past the

dragster at an honest 200 mph (293 ft/sec). The 'tree'goes green for both

of you at that moment. The dragster launches and starts after you.

You keep your wrist cranked 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