Liquid-Fueled Sharpie Rocket!

[jcsalem]

Build a liquid-fueled rocket from a Sharpie and a can of compressed air!
https://www.instructables.com/id/Office-Supplies-Challenge;-Liquid-Fuel-Rocket/

Okay, the demo has at least one NAR Safety Code violation (no launch rod) but it's still clever. It also looks suitable for a MicroMaxx conversation.

Enjoy!

 

[jj94]

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]

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]

Jeez, just don't hurt yourself, OK?

Safety goggles would be prudent.

 

[billspad]

Build a liquid-fueled rocket from a Sharpie and a can of compressed air!
https://www.instructables.com/id/Office-Supplies-Challenge;-Liquid-Fuel-Rocket/

Okay, the demo has at least one NAR Safety Code violation (no launch rod) but it's still clever. It also looks suitable for a MicroMaxx conversation.

Enjoy!

Don't uncap your Sharpie!

That will make no sense to you unless you watched Life a couple of weeks ago.

 

[Iceman1979]

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]

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]

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.