Electronics

Transmitter 

We use the Fly sky FST6  model transmitter 

Fly Sky      set up 

Rudder Servo

We use this digital rudder servo that we find turns the rudder very fast  Hiteck HS-5646

Standard Digital HS-5485HB also works well with the D4

D4 Rudder Servo Installation

Sail Winch 

290 EF has been most effective winch for the D4

D4 Winch Installation video

Waterproofing electronics 

Video