This is my second real cannon, and my first combustion. It is an advanced combustion with all the works including a chamber fan, and metered propane. Propane is hard to work with in small chamber volumes such as this, ~375 cc. This is why a meter is critical, so that the propane volume falls within the golden ratio range. ~2.4% - 9.2%. I calculated the pressure for the meter to be around 20 psi. Pretty much all of the information, along with the general design, were found at burntlatke's site. I have fired it a few times, and from what I can see, it is quite powerful. I will take a video at some point. Probably tomorrow.
EDIT 1: Video
Posted: Sat Feb 23, 2008 10:41 pm
by Sergeant Dotson
Very nice! I like the design and idea. Keep up the good work! Now all you need to do is paint it, maybe a poll for different colors?
Posted: Sun Feb 24, 2008 6:41 pm
by chartreusesnot
Heres the first video in crappy lighting due to a rainy day.
Posted: Sun Feb 24, 2008 7:42 pm
by STHORNE
you should put a ball valve (or 2) in your propane meter set up for more accurate propane use, but other than that.....
JOB WELL DONE!!!
EDIT: oops, my bad, hard to see the ball valves with the skinny handles.
Posted: Sun Feb 24, 2008 8:09 pm
by e1337
There are ball valves as far as I can tell
Posted: Sun Feb 24, 2008 8:16 pm
by chartreusesnot
they are the small brass pieces on either side of the gauge.
Posted: Sun Feb 24, 2008 8:23 pm
by bigbob12345
Nice job im planning to make one similar after I save up some money.
