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Single mother in need of explanation

Discussion in 'Electronic Equipment' started by [email protected], Mar 13, 2007.

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  1. Guest

    Thank you in advance for your time. I found a neat project to do with
    my 14 year old son, but would like to know the science behind it so it
    will be educational.

    Here is the video link.

    It is a fire cracker experiment, and I know he will love it, but I am
    clueless as to how this makes my car run.
  2. Robert Baer

    Robert Baer Guest

    I am unable to look at the video as i am on dial-up.
    Before continuing, may i say that firecrackers are dangerous and a
    finger, or hand, or eye can be destroyed without the proper care in
    handling and use of shielding?

    Here is the idea: in the car are pistons (moveable cylindrical
    devices) that are sealed in a cylindrical chamber so that they can only
    move up and down.
    Simplisticly speaking, when they are at the top, a mixture of
    gasoline and air is introduced and exploded with a spark.
    The resulting pressure pushes the piston down - and that motion is
    indirectly transferred to move the car.
    A firecracker can be exploded also, and if a fixture is properly
    engineered to take advantage of that, the expanding gasses could be used
    to impart motion to a wheel (the transfer would be more direct than in a

    The engineering of that fixture must be carefully done using
    materials that will not be cracked or shattered by the explosion (think
    *safety*), and shileding should be added as well, again for safety.
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