Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

interesting facts,,

Discussion in 'The Lounge' started by wasted wages, Jan 2, 2006.

  1. wasted wages

    wasted wages 3/4 ton status

    Joined:
    Dec 3, 2003
    Posts:
    9,194
    Likes Received:
    2
    Location:
    Dallas Texas
    May be a repost but still cool,,,,

    a.. One dragster's 500-inch Hemi makes more horsepower then the first 8 rows at the Daytona 500.
    b.. Under full throttle, a dragster engine consumes 10 gallons of nitro per second, the same rate of fuel consumption as a fully loaded Boing747, but with 4 times the energy density.
    c.. The supercharger takes more power to drive then a stock hemi makes.
    d.. With nearly 3000 CFM (cubic feet per minute) of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into nearly-solid form before ignition.
    e.. Therefore the cylinders run on the verge of hydraulic lock.
    f.. Dual magnetos apply 44 amps to each spark plug. This is the equivalent output of an arc welder in each cylinder.


    g. At stoichiometric (exact) 1.7:1 air/fuel mixture (for nitro), the flame front of nitro methane measures 7050 degrees F.
    h.. Nitro methane burns yellow. The spectacular white flame seen above the exhaust stacks at night is raw burning hydrogen, dissociated from atmospheric water vapour by the searing exhaust gases.
    i.. 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.
    j.. The engine can only be shut down by cutting off its fuel flow.
    k.. If spark momentarily fails early in the run, unburned nitro builds up in those cylinders and then explodes with a force that can blow cylinder heads off the block in pieces or blow the block in half.
    l. Dragsters twist the crank (torsionally) so far (up to 20 degrees at the rear end of the crank) that sometimes cam lobes are ground offset from front to rear to re-phase the valve timing somewhere closer to synchronisation with the pistons.
    m. To exceed 300mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. But in reaching 200 mph well before ? track, launch acceleration is closer to 8G's.
    n. If all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs $1000.00 per second.
    o. Dragsters reach over 300 miles per hour before you have read this sentence.
    p. Top Fuel Engines ONLY turns 540 revolutions from light to light!
    q.. The redline is actually quite high at 9500rpm.
    r. To give you an idea of this acceleration, the current Top Fuel dragster elapsed time record is 4.477 seconds for the quarter mile. (400mt)
    s.. This means that you could be coming across the starting line in your average SL55 AMG "twin-turbo" Mercedes at 200 mph (on a FLYING START) and the dragster would BEAT you to the finish line FROM A DEAD STOP in a Quarter mile distance!
     
  2. kyser_soze

    kyser_soze 1/2 ton status

    Joined:
    Sep 4, 2004
    Posts:
    3,180
    Likes Received:
    0
    Location:
    KC Missouri
    Pretty cool facts.:waytogo:
     
  3. unclematty

    unclematty 1/2 ton status

    Joined:
    Jan 24, 2003
    Posts:
    3,164
    Likes Received:
    0
    Location:
    SLC UT
    Loads and loads of cool useless info here!:bow: :bow:
     
  4. roadhawg

    roadhawg 1/2 ton status

    Joined:
    Aug 15, 2003
    Posts:
    495
    Likes Received:
    0
    Location:
    Oregon
    Cool info, thanks for sharing!
     
  5. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    b. - Is incorrect. 14 gallon fuel cell is pretty much standard for T/F cars (might even be the official rule - I can't remember) - most of that 14 gallons of nitro goes straight across the combustion chambers and out the headers while "idling" during staging (to cool the engine). IIRC, approximately ONE gallon per second is actually consumed during max-blast.

    c. - The supercharger on a T/F engine is almost always overdriven (spins faster than crank RPM), and uses nearly 1000 hp to spin at 8000 crank RPM.

    j. - Well, kinda. You CAN shut down a T/F motor by turning off (grounding) the magnetos, but there won't be much motor left after the cylinders hydraulic-lock and pop the heads off and put the rods through the block & pan...

    n. - I have it on pretty good authority that the average cost-per-run of a Top Fuel car running mid-4-second times is around $40,000. Fuel and oil alone is nearly a grand for a single blast...



    Still some incredible stuff. Gotta love a vehicle that generates almost 6 HP for each pound of weight!
     
  6. RustyParts

    RustyParts 1/2 ton status

    Joined:
    May 26, 2005
    Posts:
    235
    Likes Received:
    0
    Location:
    Wyman, Kentucky
    The white stuff in chicken crap is still chicken crap.


    Don't pay no attention to me, I'm intoxicated.


    I think.
     
  7. CustomChevy

    CustomChevy 1/2 ton status

    Joined:
    Jun 29, 2005
    Posts:
    4,328
    Likes Received:
    0
    Location:
    Kitchener, Ontario, Canada
    An early contender for post of the year?



    I think so!:haha::haha::haha:
     
  8. RustyParts

    RustyParts 1/2 ton status

    Joined:
    May 26, 2005
    Posts:
    235
    Likes Received:
    0
    Location:
    Wyman, Kentucky
    Thank you very much. And I'm more intoxicated.
     

Share This Page