this wasn't actually too hard to make with most of the complicated plumbing happening in the brass fittings air comes through a port in the side leading to a little tube that goes into the combustion chamber leaving enough room for fuel to trickle down into the aquarium pump that i salvaged from the dog that i made to pee on poison ivy from there the fuel is pumped up to the nozzle which i designed to spin the fuel along the inside of the bottle which for obvious reasons i also named bold and brash more like belongs in the trash and i made two variants one with a inbuilt nozzle and one with threads to accept exterior nozzles like the fan favorite squarow spike i i get it these external nozzles will be secured with o-rings and some super glue because i was feeling paranoid and it'll all be printed out of either clear petg or some wood pla filament that i thought would do a good job of charring before it melted with everything thrown together we can test this now with water so yeah there's some issues luckily the properties of water and my fuel alcohol are very different with alcohol having much less surface tension than water so resetting and retrying with my isopropyl alcohol fuel made for a lot better results so that's the film cooling more or less sorted out the ignition will come from a barbecue igniter which i'll clip onto some frankenstein bolts on the nozzle and the compressed air will be controlled by a solenoid which will in turn be controlled by a control panel that i made for an earlier video speaking of made in another video it's not lazy it's just a callback to the shameless plug reminding you to like share and subscribe to make the algorithm happy if you are enjoying the video the first test is just going to see how the whole system handles the pressure of combustion without injecting any air so just really the film cooling aspect and before this whole thing gets covered in flames i've got to say i find this just beautiful
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