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SpudFiles Forum Index » Combustion Cannon Discussion » Wont fire...

Wont fire...

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Pyro_Boy

Posted: 10/07/2006 16:41 PM Post subject: Wont fire...

Private

Joined: 05 Oct 2006
Posts: 8
4.75 Spud Bux

Ok so i build my first cannon combustion tryed it and it worked=]

Shot twice then when i tryed third it wouldnt light the propellant (yes spark is working)

But when i open the cleanout and spark it lights and flames come out the back.

Why wont it light when cap is on.

Thanks pyro Wink

Torch

Posted: 10/07/2006 16:45 PM Post subject:

Sergeant Major

Joined: 27 Jun 2006
Posts: 179
3.27 Spud Bux

1. Too little or to much fuel
2. You need to vent it after each shot, adding a chamber fan will help with this.

Pyro_Boy

Posted: 10/07/2006 16:47 PM Post subject:

Private

Joined: 05 Oct 2006
Posts: 8
4.75 Spud Bux

Thank you but each shot was at different time so i think it would be option 1 how much spray do you reccomend using axe right now.

Torch

Posted: 10/07/2006 16:50 PM Post subject:

Sergeant Major

Joined: 27 Jun 2006
Posts: 179
3.27 Spud Bux

Just depends on your chamber. Expermenting is the best thing to do really.

Pyro_Boy

Posted: 10/07/2006 16:54 PM Post subject:

Private

Joined: 05 Oct 2006
Posts: 8
4.75 Spud Bux

Thanks you have been helpful

Torch

Posted: 10/07/2006 16:58 PM Post subject:

Sergeant Major

Joined: 27 Jun 2006
Posts: 179
3.27 Spud Bux

No problem! Good luck with it. Smile

SquishY

Posted: 10/09/2006 2:25 AM Post subject:

Master Sergeant

Joined: 07 Feb 2006
Posts: 159
600.49 Spud Bux

I was playing around with my new combustion today(first one ive even done anything with in over a year) and I think my chamber is way to big. I used 2" and 3" ABS with all the proper ends and such, the chamber from reducer to screw on cap thingy is 8 1/4" inches(didn's make measurements when it was made just picked a spot and cut) with a 33" barrel. The only good shot I got blew my piezo out and my barrel off but the duct-tape and sand ball went about 500'.
Not hijacking the thread but mine does the not firing thing to so eh.

Torch

Posted: 10/09/2006 12:48 PM Post subject:

Sergeant Major

Joined: 27 Jun 2006
Posts: 179
3.27 Spud Bux

Torch wrote:

Expermenting is the best thing to do really.

You need to just find the right fuel mixture methinks. But im not really sure..

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