Diet Coke Mentos Assault Rifle (DCM Assault Rifle)

A place for general potato gun questions and discussion.
User avatar
Davidvaini
Sergeant 4
Sergeant 4
Posts: 1315
Joined: Tue May 29, 2007 8:58 pm

Lol I was bored so I just came up with this quick drawing.. im away from my comp with photoshop at the moment so I went oldschool with paint.

Image

The coke would get loaded into the containment chamber then sealed off.(measured loading).. then the mentos would get droped into it and sealed off as well.. then you pull the blowgun to emit the reaction..

Now i can see some problems.. first I believe the reaction is nucleation which would only provide an intimidate burst and not really have much pressure to speak of. so having this many ball valves/triggers would be an issue.. I figured I could skip the blowgun step and load the mentos first.. so then my trigger would be the ball valve for the dietcoke.. but this would be a limitation on measuring.

Any suggestions are welcome.. I'm pretty tired so im sorry if this is a dumb idea...
User avatar
ALIHISGREAT
Staff Sergeant 3
Staff Sergeant 3
Posts: 1778
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK

LOL you would end up with a very sticky blowgun and barrel :lol:

i would just stick to compressed air... after all, the air is free!
User avatar
Davidvaini
Sergeant 4
Sergeant 4
Posts: 1315
Joined: Tue May 29, 2007 8:58 pm

well yes I could and have done compressed air.. this would be a fun little side project.. but now that you said compressed air... hmm


hybrid diet coke and mentos launcher...,. the possibilities ...
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

The mentos would be collecting in your mid chamber there. You would probably want to eject the "used one" after each shot.

I don't believe the resulting pressure is going to be that useful ...and it will be a sticky mess to have to deal with. Just my thoughts....
User avatar
Skywalker
Specialist
Specialist
United States of America
Posts: 194
Joined: Sun Aug 05, 2007 7:22 pm
Has thanked: 9 times
Been thanked: 9 times

Reminds me of this 10yr old friend of my brother, we did a little chemistry demo w/ baking soda and vinegar. Then when he found out we had some gunpowder too, he wanted us to mix them together b/c ,of course, it would be more impressive than either gunpowder or soda/vinegar seperately :roll:
User avatar
Ragnarok
Captain
Captain
Posts: 5401
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK

Skywalker wrote:it would be more impressive than either gunpowder or soda/vinegar seperately
Actually, of the two, the Soda/vinegar is probably the more interesting.

If you superconcentrate the solution you get after it's done (usually by boiling, then cooling), you get a solution of sodium acetate, which does fun things like this:
[youtube][/youtube]

...although the vinegar/baking soda way of making it usually ends up with a piss yellow solution.
The great thing about this reaction is it's reversible and reusable by reheating it until the crystals dissolve again.
Does that thing kinda look like a big cat to you?
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

When my son was a baby, we had a portable baby bottle warmer that was based on this stuff. You would boil the plastic pouch to "charge" it when you were ready to travel. To heat the bottle, you snapped a nickel sized piezo element buried in the corner of the pouch and voila', the solidification and the heating started.

It's been around a while....that was 21 years ago.
SEAKING9006
Corporal 3
Corporal 3
Posts: 734
Joined: Mon Jun 23, 2008 3:20 pm
Location: Texas

I wonder if that is useful for ammo...... :twisted:
Completed projects:
CA1 SMSS Basic Inline
CA3 PDAB Airburst Cannon

Current Project: Bolt action rifle (25x140mm + 1in shot)
Post Reply

Create an account or sign in to join the discussion

You need to be a member in order to post a reply

Create an account

Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute

Register

Sign in

  • Similar Topics
    Replies
    Views
    Last post