Okay, a couple things:
Ordered my Beaglebone and ROV cape yesterday, and to this point, that is the summary of my "ROV experience".
Former employer has acquired a laser cutter (this bodes well), but do not yet know it's capabilities, nor do I have any experience with laser cutters.
Picked up an old Amphibico underwater video housing for cheap.
I have access to a bunch of tools and one mechanical engineer (bonus!)
Since I am not yet committed to the body shape of the OpenROV (and haven't confirmed if I can "properly" cut pieces and assemble one), I have the option of design modification, if beneficial. My thought was to have larger diameter thrust rotors/propellers at slower RPM, housed in Rice nozzles (vs. Kort), with higher torque motors if needed.
Why would I change the original design? 4 inch PVC pipe is cheaper than clear acrylic, this got me thinking about the size of the propeller, then re-thinking motor/propeller combo, then a bunch of over-caffeinated tangents from there..
Including 3d printing a rim driven thruster (Voith, Brunvoll, IntegratedThrusters™, patents from the 70's on, etc.), proper pitch for propeller for efficiency vs. thrust, and single blade propellers.
It's perfectly fine to tell me to build the original stock design and lay off the coffee!