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Potatoe Potatoe combustion.

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Unread postAuthor: POLAND_SPUD » Sun Dec 14, 2008 10:39 am

I like the idea... and I am more than sure that a bursting potato won't dammage anything... (if you wear safety glasses)

larda will probably build a 10X mix hybride out of genetically modified spud :wink:
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Unread postAuthor: Carlman » Sun Dec 14, 2008 10:45 am

POLAND_SPUD wrote:I like the idea... and I am more than sure that a bursting potato won't dammage anything... (if you wear safety glasses)

larda will probably build a 10X mix hybride out of genetically modified spud :wink:


or make a steel shell for the spud lolz
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Unread postAuthor: ALIHISGREAT » Sun Dec 14, 2008 10:50 am

to be honest, i can't envisage a spud exploding unless it was little more than the skin left, spuds are pretty tough vegetables you know :wink:
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Unread postAuthor: SEAKING9006 » Sun Dec 14, 2008 12:06 pm

I say go for it. Even if it doesn't advance the technology, throwbacks are always nice.

Plus, it's unique. How often do we honestly get to see unique ideas around here lately? I'd love to see it done, even if I'm not a fan of minis. For an even more metaphorical, artsy meaning, fire PVC bullets from it. That would be a hoot.
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Unread postAuthor: john bunsenburner » Sun Dec 14, 2008 4:18 pm

This promises to be entertaining, and for me it is a nice way to make my first combustion, though i doubt i will bother doingt it before the due date i want to finish my first pneumatic first.
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Unread postAuthor: jimmy101 » Mon Dec 15, 2008 12:39 pm

Go for it.

Yes, it is kind of silly but so what? No sillier than using a tennis ball can as the chamber.

If done properly it won't explode. (Lots of dumbass posts on the possibility of it exploding). The peak pressure in the chamber is really only dependent on the ammo's mass, diameter and friction. If those values are low enough then it won't explode since the chamber pressure won't get high enough.

You might consder using the spud as the chamber, barrel and ammo. Cut a plug out'a the spud inject fuel, reinsert plug as the ammo. No barrel at all.

Pin electrodes might work, easy enough to test if the spud is to conductive. If the sud is too conductive then you might be able to get away with only insulating one of the two electrodes. If the pins are firmly attached to their wires then you don't really have to worry about the pins becoming projectiles, the wires will stop'm.
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Unread postAuthor: starman » Mon Dec 15, 2008 12:57 pm

jimmy101 wrote:If done properly it won't explode. (Lots of dumbass posts on the possibility of it exploding).


Watch who you call dumbass... :wink:
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Last edited by starman on Mon Dec 15, 2008 1:39 pm, edited 2 times in total.
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Unread postAuthor: paaiyan » Mon Dec 15, 2008 12:58 pm

Well the good thing is, if it does fail, how much damage can a chunk of potato possibly cause if you're wearing eye protection?
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Unread postAuthor: john bunsenburner » Mon Dec 15, 2008 2:22 pm

For heavens sake why does not one jsut make a spud pipe bomb, i think i should, just to check(i have made real pipe bombs so a spud wont hurt me after all i am not using explosives). I will tell you in a min what happens, using gasoline as a fuel.
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