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Strange Facts

Discussion in 'Jokes and Humour' started by orcus, Mar 11, 2005.

  1. Found this old email a mate sent me and though it might interest some people.

    * A single 500 cubic inch Top Fuel Dragster engine makes more rear wheel horsepower than the first 6 rows of a V-8 Supercar grid!
    * Under full throttle, a Top Fuel dragster will consume nearly 8 liters of nitromethane fuel........Per second!
    * Top Fuel Dragsters are the quickest accelerating wheel driven vehicles on the face of the planet.
    * With nearly 3000 cubic feet per minute of air being rammed into the engine by the supercharger on 40% overdrive, the air-fuel mixture is compressed into a nearly solid form before ignition; each cylinder runs on the verge of hydraulic lock.
    * The supercharger requires more horsepower to run at maximum rpm than the average family car can produce.
    * Dual magnetos each supply 44amps to the spark plugs, this equates to the output of an arc welder in each cylinder.
    * A normal air-fuel ratio for an internal combustion piston engine is in the order of 14.7:1; a Top Fuel engine has an air-fuel ratio approaching 1.8:1. The nitromethane flame front within each cylinder reaches over 3000 degrees C for a fraction of the combustion process.
    * Nitromethane burns yellow, the spectacular white flame seen above the exhaust headers at night is raw burning hydrogen, which is disassociated from the residual water vapor by the searing heat of the exhaust gasses and is a by-product of the combustion process.
    * Spark plug electrodes are completely consumed during each pass, after 1/2 track the engine is basically dieseling from compression plus the glow of the exhaust valves. The engine can only be shut down by cutting off the fuel flow.
    * If spark momentarily fails early in the run, the unburned fuel builds up in those cylinders and will either "hydraulic lock" and explode with such force that cyl heads can be blown off the block in pieces or the block itself will be blown apart, its quite common to see spark plugs shooting off into the distance during a run.
    * During a run the crankshaft can twist torsionally so far (up to 20 degrees at the top end of the track) that the cam lobes are sometimes ground offset from front to rear to re-phase the valve timing somewhere closer to synchronization with the pistons at high rpm.
    * The clutch is progressively fed in at specifically timed intervals to give optimal acceleration whilst utilizing as much of the available traction as possible depending on track conditions, setting up a clutch correctly is considered by many to be a "Black Art".
    * To exceed 300mph in 4.5 seconds, dragsters (and their drivers) must accelerate at an average of over 4G's. In reaching 200mph by half track the launch acceleration peaks at around 8G's for a fraction of a second just off the start line.... This is Jet Fighter stuff!
    * The engine is capable of going from idle @ around 2400rpm to over 8000 rpm in just 0.3 of a second. There is no flywheel as such, just a clutch pack hence the incredible acceleration ability of the engine.
    * Top Fuel Dragsters are able to reach 300mph before you have finished reading this sentence.
    * The rear tires run approximately 6psi.
    * At 300mph the rear wing produces nearly 6 tonnes of downforce, the front wings nearly 2 tonnes, during the run the center of the chassis flexes upwards nearly 8 inches as the rear wheels try to lift the front of the car into the air.
    * When the parachutes are deployed, a force of nearly negative
    5g's is experienced by the driver for a fraction of a second, some long term drivers have suffered from detached retinas and damaged eyesight.
    * For a typical 5.0 second run @ 8000rpm, the engine only turns 660 revolutions.... Light to light!
    * If all equipment is paid off, the crew works for free, and for once nothing blows up, each run can cost up to $1500.....Per second!!
    * The current Top Fuel 1/4 mile world record is 4.441 seconds and over 333mph. To put all this into perspective, imagine you are aboard Valentino Rossi's 240hp Yamaha MotoGP bike, ...Sitting 1km up the road is a top fuel dragster waiting at the start line of the 1/4 mile, you snick the bike into first gear and accelerate hard up through the gearbox, as you tuck down behind the screen and hit top gear at 200mph (over 320kph), you pass the dragster, it spots you a genuine 200mph. At this point the light goes green for both of you.....Within two seconds you hear a God-awful ear-searing whine.....Within 4 seconds the dragster has caught and passed you, nearly blowing you into the weeds, and all this before you have completed the 1/4 mile!! Makes one think.... yes??

    Drag Racing is not for people who like to play rugby league, soccer, golf, tennis, hockey, ten pin bowling etc......These sports only require one ball!!
  2. Interesting...

    What about bikes though...? :s
  3. from what i have heard drag bikes the ones that have a very long funny looking body do a 1/4 mile in the same amount of time...

  4. no way all they can do is go straight and often the engine does not fire straight away and you see on bike go shoot of and the other does not. Hate to be on one actually, looks a bit daunting!

    Fun to be in a road car or bike do laps though around caulder park or something...