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Coke and Mentos for power?

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Coke and Mentos for power?

Unread postAuthor: Cojaro » Thu Feb 01, 2007 8:46 am

Could it be possible to mod or create a pneumatic gun, but whose pressure and power come from the reaction between Diet Coke and Mentos?

I was thinking of some like adding two ball valves, one after the other, on one end of the "air" chamber. Put some Coke in, then close both ball valves. Open the first to put the Mentos in, close it, then open the second to drop the mentos into the Coke. Then of course open the third ball valve (the one that connects barrel to chamber) to launch it.

Might be messy, bu also might be a lot of fun.
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Unread postAuthor: Hotwired » Thu Feb 01, 2007 9:04 am

....Do you really want all that sticky mess?

It'll be fun for one-offs but any common use of it is going to be a pain.

It'll work. The same way vinegar and bicarb will work but don't expect huge pressures.
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Unread postAuthor: Cojaro » Thu Feb 01, 2007 9:07 am

Hotwired wrote:....Do you really want all that sticky mess?

It'll be fun for one-offs but any common use of it is going to be a pain.

It'll work. The same way vinegar and bicarb will work but don't expect huge pressures.


It'd probably jsut be easier to use Coke and Mentos as fountains, now that I've thought about it more.
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Unread postAuthor: Recruit » Thu Feb 01, 2007 9:58 am

We have gone over this countless times it would be impratical in price in fact after a month you would be better of buying a co2 regulator.
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Unread postAuthor: medievalman » Thu Feb 01, 2007 6:34 pm

It would also be EXTREMELY EXPENSIVE!!!
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Unread postAuthor: StealthSpud » Thu Feb 01, 2007 7:07 pm

Ha yeah, you could say that again!
But it still might be sweet...
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