

The 72-inch Seabee came in at exactly 9 lbs, 5 oz. Turning 11X7.5 APC props, the two AXI 2826/12s pulled approximately 30 amps each for a total of 60. The two OPTO coupled (no BEC), 60amp Pulso ESCs provide lots of margin. The ESCs are mounted on the bottom of the wing directly above the wing opening.
The 14.8 volt Rhino batteries (from Hobby King) times the 60 amps provides 888 watts. Dividing by the weight of the airplane gives us 93 watts per pound. That should be enough for the Seabee to do a nice loop and roll. But we’ll see. Anyhow, I’m sure not many full-scale Seabee owners ever looped or rolled this amphibian. We wired the two 3700mAh Rhinos in parallel for 7400 mAh. With throttle management, we expect to enjoy flights of 15 minutes. But we’ll see.
The bottom photo shows how we wired this twin.
So how does it fly? Well, we don’t know yet. We plan to do the test flight off a paved runway before moving on to water. We will be shooting a video and will publish it here, so come back often. We still have some water proofing to do before getting it wet and we will let you know how we do that, too.
AXI motors from Model Motors are recognized as the benchmark by which all other motors are judged and compared. We used the 2826/12 that has a KV of 760. It will handle 60 amps for 60 seconds. Our Seabee, drawing only 30 amp per motor leaves lots of margin. From Hobby Lobby.
The 60amp ESC by Pulso Systems is the DL60A++ model that comes with a programming card. This is an OPTO coupled ESC– no BEC– so we use an RX battery as we do on most larger models. This ESC is available from Auriga Avionics.com.