Butane cannon build

[ToyFactory87]

I made here a small cannon that is intended to use butane gas. My first trial ended up in failure. I am going to build a more reliable igniter that also seals the chamber. I am wondering though if my chamber is too small for gas?

[jrrdw]

Your air / fuel mix is probably wrong. There is page after page of great discussion here on those topics.

Welcome to Spudfiles.

[jackssmirkingrevenge]

How big is your chamber and how are you metering your gas?

For small volumes, a syringe is the best idea:

[youtube][/youtube]

[ToyFactory87]

Using a typical fill valve for butane lighter. I need to install an o ring in rear seal, and working in igniter module 3.5v dc to 40kv ac

[ToyFactory87]

Just hitting the valve with the can. Wasnt metering. I havr to install an o ring to seal rear seal and im making ignitor plug that seals, and ignition power module 3.5v dc to 40kv ac

[jackssmirkingrevenge]

In that case it's almost guaranteed that you have far too much fuel in your chamber. I really recommend the syringe method for accurate filling.