Hello. Does anyone know what parts of a gas inspirator (venturi) primarily affect the fuel/air ratio? I've tried searching high and low for the answer to this and can't find it anywhere. It seems like a black art or something.
See, what I'm doing is building a reproduction of a pest scaring device which makes a loud noise to scare away birds and animals from crops, just in case anyone was curious. The goal is to have an adjustable fuel/air ratio to vary the flame speed. This changes the "tone" that is produced. Maximum flame speed occurs when the mixture is stoichiometric and tapers off on either side. Maybe someone has made their own custom burner?
Thank you, Robert