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{"color":"DEFAULT","isTrashed":false,"isPinned":false,"isArchived":true,"annotations":[{"description":"1st at idle, then full throttle... remember this is for only 1 cylinder, they have 8","source":"WEBLINK","title":"Top Fuel Dragster Fuel Pump Demo single cylinder","url":"https://www.youtube.com/watch?v=xGTbQuhhluY"}],"textContent":"Top fuel dragsters, they're insanely powerful.\n\nSome quick facts you can find through Google.\n\nOne Top Fuel dragster 500 cubic-inch Hemi engine makes more horsepower than the first 4 rows at the Daytona 500.\n\nUnder full throttle, a dragster engine consumes 1.2 gallons of nitro methane per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less energy being produced.\n\nA stock Dodge Hemi V8 engine cannot produce enough power to merely drive the dragster\u2019s supercharger.\n\nWith 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.\n\nAt the stoichiometric 1.7:1 air/fuel mixture for nitro methane the flame front temperature measures 7050 degrees F.\n\nNitro methane 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.\n\nDual 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.\n\nIf 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.\n\nDragsters reach over 300 MPH before you have completed reading this sentence.\n\nIn order to exceed 300 MPH in 4.5 seconds, dragsters must accelerate an average of over 4 G\u2019s. In order to reach 200 MPH well before half-track, the launch acceleration approaches 8 G\u2019s.\n\nTop Fuel engines turn approximately 540 revolutions from light to light! Including the burnout, the engine must only survive 900 revolutions under load.\n\nThe redline is actually quite high at 9500 RPM.\n\nTHE 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 per second.\n\nThe 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\u2032 of the run (09/28/03, Doug Kalitta).\n\nPutting this all into perspective:\n\nLets say the 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 by it. You have the advantage of a flying start. You run the \u2018Vette hard up through the gears and blast across the starting line, and pass the dragster at an honest 200 MPH. Just as you pass the Top Fuel Dragster the \u2018tree\u2019 goes green for both of you. 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 \u2013 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.\n\nAnd here's a video of a fuel pump from a dragster running. Keep in mind there are EIGHT of these! http://m.youtube.com/watch?v=xGTbQuhhluY\n\n/u/rmbarrett found the original source of this copypasta","title":"Dragsters","userEditedTimestampUsec":1573575793186000,"createdTimestampUsec":1573575793186000}
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