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Tuesday, January 25, 2011

Anatomy of a Top-Fuel Dragster

If you've never seen one of these in person, it's mind-blowing. Actually, I guess, it's mind-blowing even if you haven't seen it yet. ;-) (pic via PM)

Parts of a Top-Fuel Drag Racing Car - Popular Mechanics: "No other ground vehicle can out-accelerate a top-fuel dragster. The fastest class in the National Hot Rod Association (NHRA) drag-racing series, these cars can rocket to 300 mph in less than 4 seconds. ... Top-fuelers burn a mixture that's 90 percent nitromethane and 10 percent alcohol. Interestingly, a gallon of nitromethane, which costs $58 ... The 58 nozzles in the intake tract are always open, dumping about 5 gallons of fuel in a 4-second run. ... A top-fueler's exact horsepower is a mystery—there isn't a dynamometer that can handle one. Current estimates are in the 8000 neighborhood, and, no, we didn't mistakenly add a zero on the end. The basic layout is very similar to the 1964 Dodge Hemi 426 V8—16 pushrod-activated valves—but with two spark plugs for each cylinder and a total displacement of 500 cubic inches. The supercharger, which is just a belt-driven air pump that force-feeds the engine, is so massive that it takes 700 hp to run it."

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