[audi] Uk fastest road legal car
apritchard at seaeye.com
Mon Mar 1 07:37:01 EST 2004
Oh, yes, I understand the difference to drag cars.
But... a 2000hp road legal car....... That is a different kettle of fish
Mechanical design engineer,
Seaeye Marine LTD.
+44 (0)1329 289000
From: Kent McLean [mailto:kentmclean at mindspring.com]
Sent: 01 March 2004 12:32
To: quattro at audifans.com
Subject: Re: [audi] Uk fastest road legal car
"Alan Pritchard" <apritchard at seaeye.com <mailto:apritchard at seaeye.com>>
> The bit of the show I caught was the 0-60 run. <snip>
> Then the sport Quattro.... Oh.... Not just any.... Dialynx's silver sprt
> Quattro, you guys seen it on the vids??? Hehe...... 3.07 seconds
Bah, that's not fast. The best example of fast that I know of is this:
[If you like, skip down to "Putting all of this into perspective:"]
> First, some useful info:
> * One Top Fuel dragster 500 cubic inch Hemi engine makes more
> horsepower than the first 4 rows at the Daytona 500.
> * Under full throttle, a dragster engine consumes 11/2 gallons of
> nitromethane 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 nitromethane
> the flame front temperature 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.
> * 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 red-line 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 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. 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.
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