How do you make a pressurized 2 litre coke bottle instrument
I have tries to recreate this, pumping my bottle up to 120 PSI with no results. I noticed that he is from the UK and that his bottles were shaped differently than mine(from America), being more of an hourglass shape. Would this have any affect? Also i noticed that when i was doing it that there was a lower PSI(somewhere less than 100... mabye 80ish?) where i could hear a faint sound similar to in the video. Is it possible that I missed the correct PSI?