I think that figuring out a way to make cheap yet pressure reliable hatches is going to be the defining design criteria for all my AUV designs. Shifting the CO2 tank to outside the hull lets me use smaller hatches, which will be easier to build.
This “Cyclops” design is my experimenting with that shift. There are two tanks shown, a 24oz and a 12oz. Tank size will drive a lot of the design – so I have taken to having both visible when sketching out a hull design.
I’m starting to think I need to introduce some more separation of all these variable before I start building – so I may do spin up a design with a smaller hull to work out technique and construction details.