Here are some photos of my Demon Cortex installation on my new "Fly Navy" KingCat.
I always mix the rudders to the nose gear steering. .
The ailerons are on separate channels, the rudders are on a "Y" harness, and the elevators are on a Matchbox. The Matchbox only uses one channel.
The gyro is mounted on a platform extending from the left hand fuselage side above the receiver, which allows for simple and short wiring from the receiver to the gyro, and from the gyro to the control surfaces. No foam rubber pad is below the gyro case, as it is tied down tight with a short length of Velcro and button head panel screws.
The platform is made from 1/8" light ply which is filled and painted to match the airframe. After the paint was dry, I sanded the faying surfaces and glued the platform assembly to the fuselage side and canopy rail with BVM Aeropoxy. The decision to hard mount the gyro as opposed to using the supplied pad was based on a conversation with Dustin. He heartily recommended hard mounting it. Since our turbine powered jets experience vibration only during take off and landing, why not hard mount it to keep it from moving around?
The gyro is plugged into AUX 2 on my 12X, and selecting "GYRO" in code 17 on AUX 2, gives you control of code 44, so the gyro sensitivity is adjustable in all three flight modes. My sensitivity settings are: Flight Mode 0 (Gear Up, Flaps Up, no Crow): 35%; Flight Mode 1 (Gear Down, Flaps at Take Off, no Crow) 60%; Flight Mode 2 (Gear Up Flaps at landing position with Crow) 60%. The Flight Modes are controlled by the flap switch.
Dustin made these sensitivity adjustments while I flew the airplane, and they worked out absolutely perfect. Take off did not require any nose gear steering correction at all! The nose wheel stayed on the center line until lift off. During the first landing roll out, at brake application the right hand brake grabbed a little more than the left hand brake, causing a yaw to the right. .we could see the rudders and nose wheel steer to the left in opposition to the brake induced yaw. The yaw was reduced somewhat.
Overall, I am very satisfied with my Demon, and look forward to many more great flights!!