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Facts about Dragsters

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Old Dec 3, 2003 | 03:46 PM
  #1  
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- Dragsters reach over 300 miles per hour before you have completed reading this sentence.
- 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 1-1/2 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 ½ 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 an average of over 4G's. In order to reach 200 mph well before half-track, the launch acceleration approaches 8G's.
- Top Fuel Engines turn approximately 540 revolutions from light to light!
- Including the burnout the engine must only survive 900 revolutions under load.
- 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).
- 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.

Putting all of this into perspective: You are driving the average $240,000 NASCAR Winston Cup racecar. 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 stock car 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.

 
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Old Dec 3, 2003 | 03:53 PM
  #2  
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That puts into perspective why I like drag racing so much. The race itself is simple, but the logistics unreal.

 
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Old Dec 3, 2003 | 05:11 PM
  #3  
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That's INSANE!


To bad my MINI could whoop all they asses

I go from 0 to ludicrous speed in one half of one half of one second.

bam! I'm gone before you read the b.

yeaaaaah!
 
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Old Dec 3, 2003 | 07:38 PM
  #4  
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The drag races are a feast for the senses. Most races you just see and hear. At a Top Fuel Drag Race, you see, hear, feel, smell. In fact the sound will shake you right down to the bones!

The History Channels "Modern Marvels" does a real good show on them!
 
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Old Dec 3, 2003 | 09:16 PM
  #5  
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Really puts in perspective the absurdity of modifying a front wheel drive production car to be a 1/4 mile dragster.
 
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Old Dec 3, 2003 | 10:59 PM
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you forgot to mention that the exhuast exits the headers at over Mach 1, and that they actually provide downforce as well as forward THRUST

Also, by the end of the run, they're no longer spark-plugs, they're glow plugs. One time use only, thank you Also, there are two plugs per cylinder.

The brand of supercharger is typically Littlefield, and there is nothing little about them. The sizing is 16-71!

When the parachutes are pulled, a deceleration of -4G's peak is experienced.

Last I heard, a single Top Fuel Dragster launch measures 1.3 on the Richter scale

Screw a 19% pulley on our teeny M45, THIS is real power.
 
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Old Dec 4, 2003 | 12:18 AM
  #7  
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From: Weeblegabber West (aka WLA)
>>you forgot to mention that the exhuast exits the headers at over Mach 1, and that they actually provide downforce as well as forward THRUST




Clo/Wanda
 
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Old Dec 4, 2003 | 05:24 AM
  #8  
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>>>>you forgot to mention that the exhuast exits the headers at over Mach 1, and that they actually provide downforce as well as forward THRUST
>>
>>
>>
>>
>>Clo/Wanda



you are sooooo nasty!



 
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Old Dec 4, 2003 | 07:33 AM
  #9  
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That's Sick! I got to ride in a 2 seater dragster this summer, we did 157mph. First half of the track the rear end was swaying and everything was a blur. About 3/4 of the way down, the car stabilized and the ride became extremely smooth, my first thought was "We can go faster!" As much as I like drag racing, that ride made me like it that much more!



Craig
 
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Old Dec 4, 2003 | 07:42 AM
  #10  
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Craig,

How'd you swing the ride along?

Dave
 
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Old Dec 4, 2003 | 11:04 AM
  #11  
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>>
>>
>>That's INSANE!
>>
>>
>>To bad my MINI could whoop all they asses
>>
>>I go from 0 to ludicrous speed in one half of one half of one second.
>>
>>bam! I'm gone before you read the b.
>>
>>yeaaaaah!
_______________
Agree. Give me the old-fashioned European style GP races: Monte Carlo, Le Mans,


 
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Old Dec 4, 2003 | 11:09 AM
  #12  
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From: A Den in Maryland
The downforce provided by the exhaust coming from the zoomie headers at peak values rivals that provided by the the spoiler/wing on the back of the car.
 
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