Comments on: Submarine Airplane? Yes, Really!

By: Richard

Richard — Sat, 04 Oct 2025 14:42:15 +0000

Very well thought out and engineered. As said above CG needs to be addressed, this is what causes the rocky motion from side to side. Fun to watch the video!!

By: John Haffner

John Haffner — Fri, 03 Oct 2025 17:58:28 +0000

A better design for a Sub-Plane would be to get rid of the pontoons and go to a seaplane design called a flying boat. The fuselage bottom is a planning hull with a step like the pontoons. It is easier to build, less complex and less drag.

By: John Haffner

John Haffner — Fri, 03 Oct 2025 17:53:50 +0000

Ask any r/c sub guy, they’ll tell you to use any longer wave length r/c frequency, i.e. 27 mHz, 72mHz or 75 mHz. They all work fine in fresh water. DO NOT use them in salt water.

By: andrew armstrong

andrew armstrong — Mon, 22 Sep 2025 09:05:15 +0000

That is cool. cg was crap for sure. I was working with a guy some years back that was developing a ultrasonic telemetry system for under water. I think it would possibly be a great way to control the plane in sub mode. It’s been in the back of my head for a while to build an underwater vehicle run on this system. Only two controls needed under water as you need to surface to empty the bilge / float tanks. Or go full nerd and compress some air to to be used to empty the floats. I have no idea what a small compressor costs or weighs. Other thought was move the rear prop motor well forward on a shaft. or why not move it too a pod in he conning tower.