I'm starting a separate project for the propellers that I've been building for #Goliath - A Gas Powered Quadcopter. As Goliath has progressed, the documentation of all the elements is becoming a bit unwieldy and the rotors are a project on there own. The plan is to more thoroughly document the rotors here than they have on Goliath's project log and also describe the project in more generic terms for anyone to apply towards their own applications.