Dragster facts (repost)

Posted by DaveEllis 
Dragster facts (repost)
Date: June 02, 2006 06:05PM
Posted by: DaveEllis
* 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 Top Fuel dragster engine consumes 1&1/2 gallons
of nitro methane per second; a fully loaded Boeing 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.

* Nitromethane burns yellow. The spectacular white flame seen above the
stacks at night is raw burning hydrogen, dissociated from atmospheric
water vapour 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 $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 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.

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Re: Dragster facts (repost)
Date: June 04, 2006 01:41PM
Posted by: NickKK
Just visualising that last bit is awesome :P



Re: Dragster facts (repost)
Date: June 06, 2006 01:32PM
Posted by: Peat
its driving in a straight line! Its not interesting in anyway!

(apart from the technical side)



Re: Dragster facts (repost)
Date: June 06, 2006 01:47PM
Posted by: Glyn
Maybe, but I'd still love to hear one though

Re: Dragster facts (repost)
Date: June 06, 2006 03:45PM
Posted by: DaveEllis
Peat Wrote:
-------------------------------------------------------
> its driving in a straight line! Its not
> interesting in anyway!
>
> (apart from the technical side)

Ignorance is BLISS.

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Re: Dragster facts (repost)
Date: June 06, 2006 06:17PM
Posted by: Peat
Re: Dragster facts (repost)
Date: June 06, 2006 08:07PM
Posted by: NickKK
I'm sure there's a lot of skill involved in accelerating those things without crashing viciously, but how the spectators find it interesting is beyond me.



Re: Dragster facts (repost)
Date: June 06, 2006 08:30PM
Posted by: DaveEllis
Could say the same about going to a race track, sitting quite far from the action now days, watching cars whiz by. Infact, you could argue that if you go to a motorway, you'll see even more cars!

When you simply stuff down to the point of "driving in a stright line" then you can make any sport look uninteresting. F1 in Monaco would be driving around the streets. F1 at a Tilke track would be driving round a car park. Football is men kicking a ball about. Tennis is men hitting a ball about. etc

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Re: Dragster facts (repost)
Date: June 12, 2006 10:18AM
Posted by: NeilPearson
man i love those stats :D

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