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Top Fuel Tech

Discussion in 'The Hokey Ass Message Board' started by El Caballo, Dec 12, 2003.

  1. El Caballo
    Joined: Mar 3, 2001
    Posts: 6,332

    El Caballo
    Member
    from Houston TX

    TOP FUEL

    Top Fuel "factoids"
    Interesting email that I wanted to share:

    * 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 ~10 gallons of nitro
    methane per second; a fully loaded 747 consumes jet fuel at the same rate
    with 25% less energy being produced.

    * A stock Dodge Hemi V8 engine cannot produce enough power to drive the
    dragster 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.

    * Nitro 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.

    * 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 redline is actually quite high at 9500rpm.

    * 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 US
    $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 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.
     
  2. lucky_1974
    Joined: Nov 18, 2002
    Posts: 1,068

    lucky_1974
    Member

    I have seen this list and wondered if some of it is BS the Arc welder thing for instance Amps maybe but the voltage is not the same is it... Just curious if these are all true...
     
  3. If I recall my Mallory coil is rated at 50,000 volts. Nowhere near the output of twin magnetos. Just to muddy up the waters.:)

    Cool facts, here's one that I picked up last year that's not on your list.
    The zoomies on a top fuel dragster add to the traction by exerting downforce. When they drop a cylinder (or several) it seriously effects the handling of the rail.
     
  4. Pigiron
    Joined: Jan 21, 2002
    Posts: 309

    Pigiron
    Member

    El Caballo I like your kind of tech! I love the smell of nitro in the morning!
     
  5. Bugman
    Joined: Nov 17, 2001
    Posts: 3,483

    Bugman
    Member

    I seem to remember hearing that the downforce of the exhaust was measured in 1000's of pounds. Downforce at speed fron the wings in front of the rear tires and wing were measured in 1000's of pounds too.

    -Bugman Jeff
     
  6. tomslik
    Joined: Mar 3, 2001
    Posts: 2,161

    tomslik
    Member

    "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."



    assumming it(the T/F) doesn't go boom or go up in smoke [​IMG]


    i still like(d) tha alky and injected nitro cars...
     
  7. Pigiron
    Joined: Jan 21, 2002
    Posts: 309

    Pigiron
    Member

    Also asumming the the goldchainer behind the wheel of the Vette did'nt wet his panties doing 200 mph to begin with! [​IMG]
     
  8. tomslik
    Joined: Mar 3, 2001
    Posts: 2,161

    tomslik
    Member

    ...that would explain why the fueler went up in smoke and puked the motor!


    (uhhh, a fine "golden mist" behind the vette ya see...)
     

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