What does such a cannon cost in USA, round about?

The prices for pressure rated pipes are damn expensive in Germany

Hey,

Your combustion cannon looks pretty cool and you all aim well! 8)

But I've got a qestion:

Is the inner diameter of the barrel really just 1.5 inch (3,8cm)!? Or did you mean the radius? When I look up 1.5inch on the folding rule, I can't image that any potato or apple or whatever would fit ...

Hey,

Your combustion cannon looks pretty cool and you all aim well! 8)

But I've got a qestion:

Is the inner diameter of the barrel really just 1.5 inch (3,8cm)!? Or did you mean the radius? When I look up 1.5inch on the folding rule, I can't image that any potato or apple or whatever would fit ...

Pff I selected all parts - and only the pvc pipes and fittings cost more than 100€. Metering system, ignition and all the little things not calculated. That's a lot of money.

(I thought with max. 100€ for everything, not just for the pipes)

Okay I don't know the technical term, so here is what I mean:

http://www.kwerk.de/pdf_dateien/cfv.pdf And I may use this one instead of a female one

No, the male endcap should still be removable

Hey,

In the Combustion showcase, everyone uses female endcaps on their chamber, but here in Germany are only 2" female endcaps available. My chamber gets at least 3" big, so I have to use some more fittings and each one costs 20€. :shock:

Could I use a 3" male endcap for my combustion, too? It's ...

Whats the easiest way to get access to the chamber without using 2 or 3 more fittings?

Hey,

Can you buy such ABS crossings between chamber cap, that fit on the 3" chamber in normal building stores in the USA?

I can only find 2" crossings (I hope it's the right word) in german building stores and thats to small - In that case I have to use some more fittings :(

Here's a link to one ...

Hey, I've got another little question but I don't wanted to open a new thread.

I still want to build an advanced spud gun with a metered propane injection, just like this one: http://www.spudfiles.com/forums/the-beast-propane-bazooka-t13644.html

Is that a "Regular Combustion" or a "Hybrid ...

bighead33 wrote:THERES A TUTORIAL!!!

Where is a tutorial!?

Hey,

How do I connect the elbow of the propane injection (shown in the tutorial) with my chamber? I mean drilling a hole in the chamber can be negative for the performance and safety - if it's not done perfect. So how do you do that?

Do you drill a hole in the chamber, that's a little bit smaller ...

Spud Bud wrote:Can I use a 1/2 in nipple and street elbow instead of the 1/4 fittings? This is the part that screws onto the chamber.

Hey I've got the same question - does anybody know?

Hey, sorry for my late answer, I didn't have much time last days...

So, he used such a butane bottle to refill normal lighters? http://www.pitopia.de/pictures/standard/a/aom/21/aom_424821.jpg

How can I connect the nozzle of the bottle with the chamber and still use it? (I still have to press the ...

Hey, Nice combustion cannon you got there!

Do you use a butane refill cartridge for lighters or a normal propane bottle?

Could you explaine how the "venturi system" works or do you know a good manual? Your link is no longer available.

His venturi system works on the same principle as this ...