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Mentos/Coke RocketCar

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  • Mentos/Coke RocketCar

    Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
    Dr. Mordrid
    ----------------------------
    An elephant is a mouse built to government specifications.

    I carry a gun because I can't throw a rock 1,250 fps

  • #2
    That was funny. Not a clean break from the wall but still pretty good considering the propellant.
    “Inside every sane person there’s a madman struggling to get out”
    –The Light Fantastic, Terry Pratchett

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    • #3
      Problem #1 A significant portion of the Mentos get ejected from the bottles during launch. The reactants need to stay in closer contact. Simply putting the mentos into a central "dip tube" chamber, and manufacturing a T fitting with a simple atomizing filter to lead the product of the reactants from the bottle would be more than sufficient to double efficiency: it would also allow the bottles to be oriented upside down.

      Problem #2: There is no pressure metering system to allow the reactants to attain a significant (but safe...) pressure before release: a small metal accumulator (Beer keg) and a pressure relief valve would allow the supply side to build a decent head of pressure before releasing it through a common metering nozzle (like a 3" fire hose nozzle).

      Problem #3: the vehicle is way too heavy. It could have been built to take less than 50% of the volume and perhaps reduce overall by over 25%.

      What says the MURC congnoscenti?
      Hey, Donny! We got us a German who wants to die for his country... Oblige him. - Lt. Aldo Raine

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      • #4
        I say let's make it using aluminum tubing and power it using a paraffin or acrylic fueled hybrid rocket, something my sons and I have experience building
        Dr. Mordrid
        ----------------------------
        An elephant is a mouse built to government specifications.

        I carry a gun because I can't throw a rock 1,250 fps

        Comment

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