Hi Lupy: I sent a note to Lucien at innov8tive designs and I'll include his reply at the end of this note. I'm pleased with the power package that I have and it flies the plane nicely. I have my timer set at 10 minutes, but I've had some 12 minute flights. I'm using a 4 cell 4200 mah battery. The splashdown did remarkably little damage, she was flying two days later. If it had hit solid ground it would have destroyed the plane. I have a slide in tray mounted to the bulkheads that I access through the front hatch and this has worked well.



This is Luciens reply:



There are several ways you can go with a plane like this. The Uranus 35425 motor that they call out in the ad looks to be based on a 28x20mm stator judging by the size of the motor, and has a Kv value of 1,100 RPM/Volt. Scorpion has their SII-3020-1100 motor, which is a similar size and weight, as well as Kv value. Running on 3 Li-Po cells with an APC 11x7E prop, you would get the following performance numbers from this combination.


Amps – 51
Watts – 566
RPM - 10,000
Thrust – 72 ounces
Pitch Speed – 66 MPH


This is decent power, but not great. This gets you a little under 100 watts per pound, with will fly a seaplane, but does not give enough power to really jump off the water. About 125 watts per pound is a good place to be, and for a 6 pound model, this would require 750 watts of power. Running on 3 Li-Po cells, to get 750 watts you have to pull 68 amps of current, which is kind of high for a 3-cell pack. If you go with a 4-cell set-up, then for 750 watts you need about 51 amps of current, which is a bit more reasonable.


For this much power, the Scorpion SII-3026-890 motor is the best choice for use on a 4-cell battery. With an APC 11x5.5E prop, this combination will yield the following performance numbers.

Amps – 50.1
Watts – 742
RPM – 11,900
Thrust – 98 ounces
Pitch Speed – 62 MPH

This is just about exactly what you need for great performance with this size plane. You can also run an 11x7E prop if you want to go a bit faster That set-up would get you these performance numbers.

Amps – 57.1
Watts – 845
RPM – 11,600
Thrust – 98 ounces
Pitch Speed – 77 MPH

With this set-up, you get the same amount of thrust, but get 15 more MPH with a 7 amp increase in current draw.

I would recommend using a 4-cell Li-Po battery with a capacity of around 3800 to 4200mah and a 70 amp or larger speed controller.


Lucien Miller
Innov8tive Designs, Inc.
1495 Poinsettia Avenue, Suite 144
Vista, CA 92081