1) Ok so My igniter is from triple A battery DC to 20KV AC coonverter with 4 ends at bottom seperated in two pairs...
As I tested out, between each pair there is about 1 cm long spark. When I put those two in chain (I really didnt know the right term for this one), they make 2x longer spark... Just ...

MrCrowley. Maybe this dart guy talks all time, but his fully unexplained thing about these burst disks gave me new knowledge... I had no idea that there were these bust disks and now I doonly because of him putting it out here! And thank you about all this info about burst disks MrCrowley!

OK guys. Hello. Im pretty new in this forum (but not new to combustion cannons), so I will make my topic as constructive as possible.

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This is my 2nd combustion launcher and it is insane (for my live experience). The power coming out is like 5 times bigger than my last one ...

Thank you! That was informative answer! Just what I was looking for! :)

Yes. I assumed that using 100% oxygen would be suicide for PVC spud gun users so I bailed that idea long time ago.
Good! My conclusions about fuel was right! Propane/butane is the best choise for normal-mortal people. :)

But ...

Hello guys! Im new to spudfiles but not new to spudguns. And right now im making my second one! Just few days back I ordered bbq ignitor from ebay (and I mean that one wich works on batteries, not piesoelectric one) because stunguns are illegal in my country.
But back to my question now! So what ...