drag racing facts
Posted: Thu Nov 20, 2003 3:00 am
One Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower than thefirst 4 rows at the Daytona 500. * Under full throttle, a dragster engine consumes 1-1/2 gallons of nitromethaneper second; a fully loaded 747 consumes jet fuel at the same rate with 25% lessenergy being produced. * A stock Dodge Hemi V8 engine cannot produce enough power to drive the dragstersupercharger. * With 3000 CFM of air being rammed in by the supercharger on overdrive, thefuel mixture is compressed into a near-solid form before ignition. Cylindersrun on the verge of hydraulic lock at full throttle. * At the stoichiometric (stoichiometry: methodology and technology by whichquantities of reactants and products in chemical reactions are determined)1.7:1 air/fuel mixture for nitromethane the flame front temperature measures7050 degrees F. * Nitromethane burns yellow. The spectacular white flame seen above the stacksat night is raw burning hydrogen, dissociated from atmospheric water vapor bythe searing exhaust gases. * Dual magnetos supply 44 amps to each spark plug. This is the output of an arcwelder in each cylinder. * Spark plug electrodes are totally consumed during a pass. After ½ way, theengine is dieseling from compression plus the glow of exhaust valves at 1400degrees 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 theaffected cylinders and then explodes with sufficient force to blow cylinderheads 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 averageof over 4G's. In order to reach 200 mph well before half-track, the launchacceleration approaches 8G's. * Dragsters reach over 300 miles per hour before you have completed reading thissentence. * Top Fuel Engines turn approximately 540 revolutions from light to light! * Including the burnout the engine must only survive 900 revolutions under load.* The redline is actually quite high at 9500rpm. * The Bottom Line; Assuming all the equipment is paid off, the crew worked forfree, and for once NOTHING BLOWS UP, each run costs an estimated $1,000.00 persecond. The current Top Fuel dragster elapsed time record is 4.441 seconds for thequarter 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 CorvetteZ06. Over a mile up the road, a Top Fuel dragster is staged and ready to launchdown a quarter mile strip as you pass. You have the advantage of a flyingstart. You run the 'Vette hard up through the gears and blast across thestarting line and past the dragster at an honest 200 mph. The 'tree' goes greenfor both of you at that moment. The dragster launches and starts after you. You keep your foot down hard, butyou hear an incredibly brutal whine that sears your eardrums and within 3seconds the dragster catches and passes you. He beats you to the finish line, aquarter mile away from where you just passed him. Think about it, from astanding start, the dragster had spotted you 200 mph and not only caught, butnearly blasted you off the road when he passed you within a mere 1320 foot longrace course. That folks, is acceleration---taken from http://www.ehowa.com