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I'd also like to share my guns

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: sgort87 » Fri Jan 12, 2007 6:18 pm

Well, the gallery is not up yet. I actually just posted a thread in the General section to start collecting pictures. But if you would like to look at my site, the URL is http://www.LaunchPotatoes.com

I am currently trying to spruce it up a bit by adding some excitement to it. The quality seems to definitely be there, but pizazz does not.

I'm open to suggestions. Thanks.
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<a href="http://www.launchpotatoes.com"><img src="http://www.launchpotatoes.com/images/uploads/logo2.PNG"></a>
http://www.LaunchPotatoes.com
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Unread postAuthor: Binder17 » Fri Jan 12, 2007 10:29 pm

Very nice, The Monster especially. It is very similar to the cannon I am working on now. Mine will be a 15"X6" chamber with a 10 foot golfball barrel. You are right about the 6" fittings. Had to get them off Mcmaster and they were expensive. Looking forward to seeing the video of The Monster in action.
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Unread postAuthor: mark.f » Sat Jan 13, 2007 10:46 am

Your cannons are nice. I like the aesthetics on the small fry one. Also, but normal spudding standards, that's not that small. :wink: I really like the 6" one, because as Binder said it takes a lot of work and money to make a cannon that big.
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Unread postAuthor: Legendpilot » Sat Jan 13, 2007 12:52 pm

I appreciate everyones comments, thanks.

I got the six inch parts from a local supply house; Home Depot only carries four inch. For the fittings alone I paid close to $60 USD. The two inch cost me around $7 which I got from Home Depot, (believe it or not all the pipe at the 'big' supply house wasn't pressure rated :? ) $10 for the ignitor, and $4 for the Krylon Fusion paint (good stuff!). I was lucky enough to come across the six inch chamber for free. I don't even want to know what a ten foot piece of six inch s40 PVC would've cost! So up to this point, I'm in it for $81USD and I haven't even shot it.

Nonetheless I painted it today, and will post pictures soon of 'Big Blue'. -Lp
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Unread postAuthor: medievalman » Sat Jan 13, 2007 1:05 pm

Those Cannons look great. I am hoping to make a cannon like the small fry one, but my dad is kind of wary, because i almost lit the carpet on fire with my mini... :twisted: no fire for me for a while. and i agree with the statements about pneumatics. i have a few, and they are way more powerful than combustion, if built correctly.
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Unread postAuthor: Legendpilot » Sat Jan 13, 2007 2:36 pm

Here she is..
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At rest..
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It's just got to have a label.
100_2314small.jpg
Seems to reach the sky, doesn't it?
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Unread postAuthor: Binder17 » Sat Jan 13, 2007 11:24 pm

Nice paintjob, I like the stand also.

and for the record. A 10' piece of 6" pressure rated sch-40 cost $50 at my local hardware store.
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Unread postAuthor: mark.f » Sun Jan 14, 2007 12:00 am

YES! Score! I'll re-imburse you for that extra 9' if you want. :wink:

How long did it take you two to saw through the 20' foot piece. 10 minutes? 20 minutes? Did you use a chainsaw?
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Unread postAuthor: Legendpilot » Tue Jan 16, 2007 3:07 pm

I sawed through w/o problem - chop saw.

But there's a bigger problem; I can't get the thing to fire! :x

I tried my usual fuel, hairspray, at 5, 10 and 15 second spray intervals respectively. I think it's time to take my new found hobby to the next level and try installing a fan. I am getting a spark, but it's down near the clean-out cap and there is a whole lot of space in there! So if a spark is being produced but the gun still won't fire there must be a fuel problem, right? I'll keep everyone posted as to the outcome. -Lp
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Unread postAuthor: medievalman » Tue Jan 16, 2007 8:21 pm

You should maybe try a stungun ignition and multiple spark gaps, spanning the entire length of the chamber. This would probably solve your problem! :D
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Unread postAuthor: Legendpilot » Tue Jan 16, 2007 8:59 pm

I have been pondering the idea of a stun gun ignition, and I've just learned how to create multiple sparks via wire configuration. This is still all new to me, but I do find it more interesting the more I learn. Thanks for the input! -Lp
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Unread postAuthor: medievalman » Wed Jan 17, 2007 4:55 pm

Is it working now?
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Unread postAuthor: Legendpilot » Wed Jan 17, 2007 7:42 pm

medievalman wrote:Is it working now?


Well, I installed the fan today. I made a bracket out of the same strap used to hold the igniter handle on and let me tell you, that metal is hard to bend by hand with pliers. So needless to say it's not pretty, but it is functional, besides you can't see it when it's closed.

I have a 9V connection, which spins the fan pretty nice, and want to install a toggle switch. As it is now I can just touch a battery to the terms and the fan goes, so tomorrow I'll let you all know what happened. -Lp
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Unread postAuthor: Bluetooth » Wed Jan 17, 2007 8:59 pm

Cool. It looks great and very professional.
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Unread postAuthor: joannaardway » Thu Jan 18, 2007 6:46 am

Holy crap!

That first one is one huge mutha of a cannon, and you've definately lavished attention on decorating the others.

Welcome to the forums, and I'm sure with an opening such as this, we'll see you create some more awesome stuff.
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Novacastrian: How about use whatever the heck you can get your hands on?
frankrede: Well then I guess it won't matter when you decide to drink bleach because your out of kool-aid.
...I'm sorry, but that made my year.
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