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Liquid-Fueled Sharpie Rocket!

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jj94

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That's really cool, but the way you launch it seems kind of dangerous. I'd be really hesitant to launch it the way it instructs you to.
 

DAllen

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jcsalem...Welcome to the forum. I don't know if you are truly new here or not but I have the feeling this thread is likely to be deleted in the very near future. TRF is a little touchy about discussing methods of launching rockets in unconventional ways but don't let it be discouraging. We're a friendly bunch for the most part.

-Dave
 

RangerStl

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Jeez, just don't hurt yourself, OK?

Safety goggles would be prudent.
 

billspad

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Iceman1979

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An alternative to using a can of compressed air would be to pressure fit an air hose in where the tip was pulled from and fill it with compressed air from either a bike pump or air compresser. You would need to glue the two halves of the pen together. you could then glue cut straws as launch lugs and launch it from a launch pad safely. Plus you can enjoy it better that way.
 

MarkII

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I would say to go with the MMX conversion. It's proven, it's reliable and it doesn't threaten to blind you. (It will probably produce a better flight, too.) Plastic pens (properly stabilized, and with most of the metal parts removed) make great Micromaxx vehicles.

MarkII
 

falingtrea

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From what it looks like, the rocket is using the propellant in the compressed air can , in liquid form, for propulsion, like a Vashion cold propellant motor. That is why the can has to be held upside down. One type of propellant that is used in "compressed air" cans is 1,1,1,2-Tetrafluoroethane I believe.
 
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