New, bigger gun
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- Private 3
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- Joined: Thu Mar 30, 2006 11:31 pm
- Location: Alberta Canada
So I want to make a bigger gun than the one I have currently. I want to use a 5(or 6) foot 2 inch barrel with a 3 foot 4 inch barrel. I'm not sure if it will work out. I know there is a certain ratio but I don't know what it is. It will be a combustion.
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- Private 3
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- Joined: Thu Mar 30, 2006 11:31 pm
- Location: Alberta Canada
Alright, so my idea doesn't work with that ratio. I really don't feel like figuring it out if I don't have to. Has anyone built a big ass potato gun using a 4 inch chamber and a 2 inch barrel?
The volume of a cylinder:
![Image](http://upload.wikimedia.org/math/f/4/1/f4158dab7968d0898a95f83495604c73.png)
Where pi is 3.1415926535897932384626433832795
r is half the pipes inner diameter
h is the length of the pipe
To calculate your C:B ratio, divide your chamber's volume to your barrel's.
![Image](http://upload.wikimedia.org/math/f/4/1/f4158dab7968d0898a95f83495604c73.png)
Where pi is 3.1415926535897932384626433832795
r is half the pipes inner diameter
h is the length of the pipe
To calculate your C:B ratio, divide your chamber's volume to your barrel's.
- alex bennett
- Specialist
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- Location: Jacksonville florida!
hell yea blackspire, i use 1' long x 4'' wide chamber, with a 4'' to 2'' reducer, and a 4.5' long x 2'' wide barrel.... its awsome, it makes a really low and deep sound.
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- Private 3
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Well right now I have a 2 foot 4 inch chamber with a 4 foot 2 inch barrel. I just want something bigger.
- theregoesthewindow
- Private 4
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- Joined: Sun Jan 22, 2006 8:05 pm
Well, if you want something bigger just scale it up! Multiply the barrel length and chamber length by 2 (Or a number of your choosing)!
hmm, i havn't fired my newest cannon i built over break yet.. but would the ratio for this particular cannon be a 4 to 1 ratio?
i have a 4' 2" barrel that is brought down to 2 16inch long 4inch blast chambers with cleanout endcaps. i rigged a stun gun ignition up to it and the sparks are working quite well. the problem is that i am unsure if the chambers will hold. do you have any advice for this?
i have a 4' 2" barrel that is brought down to 2 16inch long 4inch blast chambers with cleanout endcaps. i rigged a stun gun ignition up to it and the sparks are working quite well. the problem is that i am unsure if the chambers will hold. do you have any advice for this?
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- Private 3
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- Joined: Thu Mar 30, 2006 11:31 pm
- Location: Alberta Canada
Bringing a post back from the dead, get over it. If I am reading right, you have two chambers? Can you or someone explain how this is built?Flinchy wrote:hmm, i havn't fired my newest cannon i built over break yet.. but would the ratio for this particular cannon be a 4 to 1 ratio?
i have a 4' 2" barrel that is brought down to 2 16inch long 4inch blast chambers with cleanout endcaps. i rigged a stun gun ignition up to it and the sparks are working quite well. the problem is that i am unsure if the chambers will hold. do you have any advice for this?
Out of PVC. I understand I am being a smart ass. Get over it. ![Razz :P](./images/smilies/icon_razz.png)
You use elbows and a tee to get the chambers to the barrel.
![Razz :P](./images/smilies/icon_razz.png)
You use elbows and a tee to get the chambers to the barrel.
<a href="http://www.launchpotatoes.com"><img src="http://www.launchpotatoes.com/images/up ... 2.PNG"></a>
http://www.LaunchPotatoes.com
http://www.LaunchPotatoes.com
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- Private 3
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- Location: Alberta Canada
Hmm..This could be a project for tomorrow. Thanks man.