Here's my new twin, called the Double Sonic. I was made from 2 Phoenix Models Sonic 25 ARF kits.
-Power: 2 OS .46LAs
-Wing Span: 65.5"
-Wing Area: 655 sq in
-Weight: 7.52#
-Wing Loading: 26.45 oz/sq ft

Design & Construction Details:
-Wing: A new center section 13" wide was constructed. The wing panels from one kit were joined to it. A plywood dihedral brace extends through the center section and out the distance of the original stock dihedral brace.
-Ailerons: Since I wanted more control, the stock ailerons were removed and replaced with 2" wide aileron stock with 1/4 tri-stock on the LE for beveling. Dual servos are used.
-Flap: A flap, same width as the ailerons, was added to the center section.
-Fuselage: In the stock configuration, the tanks are too low, so the engines were side mounted using Great Planes Adjustable Engine Mounts. The right cheek cowls were removed for clearance.
-Stab & Elevator: The inboard stab tips were trimmed so they butted against each other when the plane is assembled. They are held together by 1/6 ply tabs and button head screws. The elevators are stock width.
-Rudders: The rudders were enlarged to a 3" top chord and a 4" bottom chord.
-Engines: My luck with 4 GMS .32s has led me to keep them on single engine planes-they just don't seen reliable enough for a twin. I have 2 OS .25FXs on a delta twin and I don't think they would be enough power for this twin. I do have 2 OS .46AXs available, but they would make the plane nose heavy. OS or Webra .32s seemed to high priced for this project. This led to me to the LAs. The .46s aren't much heavier than a ball bearing .32 so I bought 2 of them.
-Radio: JR 9303 with 9-channel PCM receiver on 50 MHz.
-Servos: 9 total. 2 micros on throttle, 2 Hitech 5245 mini digitals on ailerons, 2 HS-5245 digitals on ruder & nose wheel, 2 HS-425 ball bearing standards on ailerons, 1 low profile on flap.
-Radio Set-up: Throttles on different channels mated together, Ailerons on different channels mated together, Elevators on different channels mated together, Rudders on a Y-connector, flap is single servo. throttles are set using the dual throttle curves on the 9303. Flight Mode 1 is low rate. Flight Mode 2 is high rate. Flight Mode 3 is high rate with crow. Stunt flaps (flap opposite to the elevator) are on the Mix switch.
-Flying: I put 2 flights on the plane today. The first flight used 10-7 MA props and the 2nd flight used 11-5 APCs. As expected, the 10-7s are faster and the 11-5s climb better. The engines only have 5 tanks through them so they probably aren't up to full power yet. Take off is excellent. The plane trimmed easily. Landing is excellent.
-Roll rate is excellent. I'm glad I installed the extra wide ailerons.
-Full stick elevator on high rate will cause nibbles to a stall in a tight loop. With the stunt flaps on, the plane loops tightly with the bobbing stalls.
-Outside loops are OK. The plane has a semi-symmetrical airfoil so it isn't as tight inverted.
-Snaps are fast, both upright and inverted.
-The plane will spin, but not go flat.
-Knife edge is excellent. There is some pitch and roll coupling, requiring only a little correction. I went back and forth across the field a couple of times in knife edge making knife edge turns. The plane will climb fairly well in knife edge, but the coupling becomes worse.
-Crow doesn't seem to slow the plane much. I may need to use more deflection. When landing with crow, the plane wants to sit down pretty quickly. It doesn't fall, but it sure doesn't float.
-Bottom line: Good twin. I'll be flying it at Multis-Over-McDonoughin late June.