hummm.... i dont like these numbers
with a 1:1 ratio a 4"x12" chamber needs a 1.5x85" barrel.. and i would like my chamber bigger than that. i was hoping more like 18", remember i want this to be a beast.

so propane should be 1:1? im reading conflicting opinions

ive got this to work pretty good using a coil from a festiva.
the only question is, have any of you gotten the 'charged' led to work on your camera boards? ive experimented with 3 different cameras and not one of them can i get the led to light once the cap is charged.

Ok, ive already made 1 cannon before finding this site. Its very loud but dosent get good range. Now i want to try again and buld the most powerful possible. Ive already build a camera flash+coil ign system and im going to use a chamber fan and regulated propane. I also got a set of cam locks to qui...