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Jan 02 2007
By: sr20de-t~ Fender Bender 3808 posts
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For those who like Top Fuel.......

3 replies 2 views Edited Jan 2, 2007
heres some random facts i found.....
 
Can't verify the accuracy of the information so take it for what it's worth....

One Top Fuel dragster 500 cubic inch hemi engine makes more hp than the first 4 rows at the Daytona 500.

Under full throttle, a dragster engine consumes 1-1/2 gallons of nitromethane per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less energy being consumed.

A stock Dodge Hemi V-8 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 degress F.

Nitromethane burns yellow. The spectular white flame seen above the stacks at night is raw buring 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 weldder in each cylinder.

Spark plug electrodes are totally consummed during a pass. After 1/2 way the engine is dieseling from the compresssion plus the glow of the 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 nito builds in the affacted 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 3.4 seconds dragsters must accelerate at an average of over 4 G's. In order to reach 200 mph well before half-track, the launch acceleration approaches 8 G's. Dragsters reach over 300 miles per hour before you 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 $1,000.00 per second. The current Top Fuel dragster elasped time record is 4.441 seconds for the quarter mile (10/05/03, Tony Schumacher). The top speed record is 333.00 mph measured over the last 66' of the run (9/28/03 Doug Kalitta).

Putting all of this into perspective:

You are driving the averge $140,000 Ligenfelter "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 or 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 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.
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Treasure Hunter
Registered: 11/29/2002
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Re: For those who like Top Fuel.......

Jan 2, 2007
So to sum up all that, the top funny car dragsters engine that runs a 1/4 mile in less then 5 seconds, can go from 0-60 in less then a second, and it's engine is honestly exploding to get maximum power. Pure close to pure alcohol fuel mixture is used :smileytongue:
 
These guys are strapped to 8 500lb Bombs pounding away in a engine block!

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Fender Bender
Registered: 02/14/2006
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Re: For those who like Top Fuel.......

Jan 2, 2007
basically.....you gotta be a special kind of person to do that for a living
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Treasure Hunter
Registered: 11/29/2002
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Re: For those who like Top Fuel.......

Jan 3, 2007


sr20de-t wrote:
basically.....you gotta be a special kind of person to do that for a living



They say that about astronaughts but really all you need is time, will and good eye sight :smileytongue:

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