It's 2018 and they are still selling the Super Sports Senior. I bought one to get into a larger plane, and I needed something to mount a Saito FG-30 in, which I bought to replace a 2-stroke that I decided to leave in place in another plane. After reading and researching a little, I discovered that the Saito weighs about 16 ounces more than the engine the plane was designed for. I was concerned about the CG, and also about the shaking, as the plane looked to be somewhat lightly built. The provided motor mount is a complex multipiece build with vibration islolators, so apparently World Models also considers vibration to be an issue. So in the end I built it as an electric model, which worked out extremely well. I used the setup I had in a crashed plane--an Eflite Power 60 470KV, Castle Talon 90, and 5500 and 5000 6S lipos with a 15x8 propeller. I mounted a battery tray that allowed the lipos to be slid as far forward as possible. To mount the motor I used a motor box from a Tower Hobbies Kaos 60. I needed weight up front to balance, perhaps about 4 ounces. The plane flew seemingly a little tail heavy, so I added a little more weight, which made no difference. Then I figured out that the issue was downthrust, not nose weight. I added two washers to the top of the motor mounts, and the plane flew perfectly, so I removed I removed some of the nose weight.

The Kaos motor box put the prop at the same location as the manual shows for the IC engine. But if I built another electric, I'd use motor mounts to extend the motor out a little and require less or no added weight. This would also allow the fiberglass nose to be screwed in where there is thicker wood behind the holes.

Plane is great fun to fly. I really like the larger size. It has plenty of power--it has as much vertical as I like for hammerheads (during which motor pulls about 75 amps, the max I've seen). For laid back sport flying, cruising, and slow passes, I can fly 20 minutes; 15 minutes for more aggressive flying. I have telemetry that tells me the mAh usage as I fly, so I don't have to guess on the time. I do use a timer I can fly to 80% drained. I do have to unscrew the wings to change the battery, but that hasn't been an issue because I get several flights per battery.