|Photo Gallery||Places to Wheel||Gallery III||Home||Forum||Tech Section||IRCChat||FlashChat|
|03-10-2006, 08:25 PM||#1|
Join Date: Nov 2002
Location: San Antonio, Texas
Top Fuel Facts
Top-Fuel Racing refers to a class of drag racing in which the cars are run on 85% nitromethane and about 15% methanol also known as racing alcohol, instead of gasoline. The nitromethane used to power the engines of top fuel dragsters costs about US$30 per U.S. gallon (US$8/L). Top Fuel dragsters use between 10 and 12 U.S. gallons (38 to 45 L) of fuel for a complete pass, including the burnout, backup to the starting line, and quarter-mile run. The engine makes about 3.4 times as much power as a similar displacement engine running gasoline.
* The engines are purpose-designed V8 engines, whose basic design is descended from the Chrysler Hemi engine. The engines can typically produce at least 8,000 horsepower (6 MW). The supercharger alone requires 1500 horsepower (1.1 MW) to turn it to generate the great intake manifold pressures for the engines. While going down the track the engines run on the verge of hydraulic lock (that is, the air-fuel mixture is compressed so much it is almost a liquid). Two spark plugs per cylinder are the rule, with some teams experimenting with three. The spark plug electrodes are completely consumed during a run, but spark ignition is not necessary after the first half of the pass, since the motor is dieseling (igniting the air-fuel mixture without the help of a spark) because of the compression and extremely hot exhaust valves. After each pass, the whole engine is taken apart and gone through, and much of it is replaced. The engine is therefore designed for quick and easy disassembly and reassembly. On average, each run costs about $2,000 - $3,000.
* These cars compete in a 1/4 mile (0.4 km) race and complete it in less than 4.5 seconds at upwards of 330 MPH (530 km/h). Top Fuel dragsters are the fastest linear accelerating vehicles in the world. A Top Fuel dragster accelerates from 0 to 100 mph (160 km/h) in less than 0.8 second, almost 11 seconds quicker than it takes a production Porsche 911 Turbo to reach the same speed. They can exceed 280 mph (450 km/h) in just 660 feet (0.2 km).
* Before their run, they do a burn-out A burn-out is done for two reasons. First, after applying some water, it heats the tires up, and secondly, it removes foreign debris from the tires. A top fueler's burnout alone can travel halfway down the track.
* At top engine speed, the exhaust gases escaping from the open headers produce about 800 pounds-force (3.6 kilonewtons) of downforce (although much more downforce is produced by the massive foil sitting over the rear wheels).
* 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.
* 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 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 in each cylinder.
* 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 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 4.420 seconds for the quarter mile (Doug Kalitta). The top speed record is 336.15 mph. (540.98 km/h) as measured over the last 66' of the run (Tony Schumacher).
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
And on another note, this one was created in Lightwave3D, which is one of the software packages we make where I work.
this was created by Monfoodoo
I bought my own copy of Lightwave and have been spending a whole lot of time trying to learn it.. Extremely interesting, time consuming and challenging.
Fame is vapor, popularity an accident, riches take wings. Only one thing endures and that is Character.
|03-10-2006, 09:16 PM||#2|
Wheels 4 Food
Join Date: Apr 2005
Cool pic. and great facts.
I've always like dragsters sense I was in elementry school(mid seventy??
When bell bottoms jeans was cool to wear).
1980 Toyota 4.3/465/300 on Propane.
60/14 welded front, detroit rear 5.13 gears.
39.5 IROC on H1's
|03-11-2006, 05:33 AM||#4|
Join Date: Feb 2003
Location: Diana, Texas
Top fuelers along with funny cars are a freakin BLAST to watch in person. If anyone has never experienced it, it is well worth the time and money to see them.
1985 Dodge Crew Cab Cummins--Full Resto Underway....
2015 RAM ECODiesel--DD/Tow Rig
|03-11-2006, 05:12 PM||#5|
Join Date: Dec 2002
Location: st.paul tx
englishtown raceway,$20 pitpass and walk allover the place on a clear summer night you could hear them @ my uncles house (matawan)
you could hear the 2 brrrrrrrrrrrrrraaaaaaaaaaaaaaaaaaaaaaaaaatttttttt
and new someone lost
89 v3500 4dr BB,465/205
90 v10 sub 350,factory parts 4l80e/vss205 1 ton
|03-12-2006, 06:03 AM||#6|
Join Date: Feb 2004
Location: Dirty Bay...Baytown
I have lived nearly 2 miles from Houston Raceway Park, since it was built. In fact, my one time uncle, used to run a very profitable Speed Shop and I used to run Nitrous and CO2 to all of the racers....
In 94 I got to hang out with Bruce Larson sp? (1993 Pro Stock Champ ?) et al....
I have always loved cars, but with it in my back I have really gotten away from the sport.....
It is funny driving a 14 sec ride and getting it into the 13s, then the 12s....and you think you are the shizzle
But then, your buddy in his 9 sec 10.5 car takes you for a ride and it is time for a bigger motor....
2003 Ford Ranger 4 cyl 122 rwhp, lol
2005 CTSV 390 RWHP RIP
2005 CTSV TT 700 RWHP
Count your blessings.
|Thread||Thread Starter||Forum||Replies||Last Post|
|fuel problems||82k5||Gas\Diesel Engine & Transmission||16||01-06-2006 02:18 PM|
|fuel cell||Stretch||General chit chat for & about 4x4's.||17||11-09-2005 05:19 PM|