There were questions about good electric 1/2A setups. I've been messing with electric 1/2A size setups for a while. It started with the Shark 202 and a Turnigy 2730-1500 motor with a 850/3S battery. This worked very well. and made me think about a B17 with four of these. The result was successful and resulted in a 595 square inch, 46 ounce machine on 63" .015" lines able to do the full pattern. The motors were the Turnigy 2730-1300 powered with a TP 2800/4S battery. This lead me to the Twin Epiphany 327 with a couple of Race Star 2730 1300kv motors. At 25 ounces, the performance is quite nice. The battery is an Ovonic 1500/4S. plenty of surplus capacity. Lines are .012" X 55". All three of these planes use the APC 6-4E props. Tractor blades on the right side, Pusher on the left side. On the twin and quad, the GP factors are eliminated, so that is a cool trick for multi engine designs.
In the single motor 1/2A size designs, I also have the Magician, and Ringmaster along with an Epiphany. All are close to 200 squares, which seems good for this size of motor, especially when coupled with my "+P" airfoil.
I thought it would be fun to show what is available in the 1/2A electric world.
Pat Johnston
1/2A Design Division
Idaho Skunk Works