Luckymex_dallas

>DEFINITION OF ACCELERATION
>
>One top fuel dragster 500 cubic-inch Hemi engine makes
>more horsepower than
>the first 4 rows of stock cars at the Daytona 500 It
>takes just 15/100ths
>of a second for all 6,000+ horsepower of an NHRA Top
>Fuel dragster engine to
>reach the rear wheels. Under full throttle, a dragster
>engine consumes 1-1/2
>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's supercharger.
>
>With 3,000 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 (stoichiometry: methodology and
>technology by which
>quantities of reactants and products in chemical
>reactions are determined)
>1.7:1 air/fuel mixture of nitro methane, the flame
>front temperature
>measures 7,050 deg. 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 halfway,
>the engine is dieseling from compression, plus the
>glow of exhaust valves at
>1,400 deg 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 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 9,500 rpm.
>Assuming all the
>equipment is paid for, the crew worked for free, and
>for once NOTHING BLOWS
>UP, each run costs an estimate $1,000.00 per second.
>The current top fuel
>dragster elapsed time record is 4.428 seconds for the
>quarter mile
>(11/12/06, Tony Schumacher, at Pomona, CA ). The top
>speed record is 336.15
>mph as measured over the last 66' of the run (05/25/05
>Tony Schumacher, at
>Hebron, OH). Putting all of this into perspective:
>
>You are driving the average $140,000 Lingenfelter,
>'twin-turbo' powered,
>Corvette Z06. 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 pass 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 1,320 foot long race course. ...... and
>that my friend, is
>ACCELERATION!

358chevycamaro

iTrader: (10)

This has been discussed before and there are a few flaws in it. Starting with the Mags don't put out 44 amps to a single plug. Still an interesting read.

joblo1978

iTrader: (14)

The record is also sub 4 seconds also. The 4.5 you posted is "slow". I've seen them run sub 4's in Denver.

9sec93

iTrader: (67)

you were probably seeing them only race 1000' also.

dutinsss

iTrader: (2)

358chevycamaro

iTrader: (10)

Actually Schumacher holds the record for TFD in 1320' (4.42) and 1000' (3.77).

9sec93

iTrader: (67)

right, thats what was posted in the original post. i was saying that the sub 4's he seen was only 1000'

joblo1978

iTrader: (14)

Oh, really?

Luckymex_dallas

sorry i dont log every post on here fo years i got this on my phone wnted to share, it was a great read, until it was analyzed by all these scientists here i dont cre it sounds like true ol hardcore drag racer wrote it.