Here is my Electric Baby Clown. It is a stock Brodak ARF with the following modifications; fabricated balsa/ply motor mount, increased wheel size to clear an 8" prop, installed horizontal stab in line with wing for equal up and down elevator authority, cut pocket in wing to match the battery and provide correct CG. It is flying well on 40' . Lap times are typically 3.5 sec with a governor.

Because I can't do 3.5 sec lap times due to dizzyness I fly it RC style around a pylon (Weighted Camera tripod). That is why it has an RC receiver and elevator servo.

John
I get too dizzy for anything leass than baout 5 sec lap time so i fly it RC style around a pylon (weighted camera tripod). If I didnt get dizzy I would use a handle.

(I added this info to the original post)

I think he has it tethered to the pylon, and flies it from outside the circle with the radio link to the elevator.  A more modern way to do what some have done with hideous mechanical linkages.

John

Here is a video that shows another plane setup with my tripod.
Click the image to play the video.



For the Baby Clown I use a 40' line of 20 lb test monofilament. My current power setup which flies the 3.5 sec laps consists of
1. A BP Hobbies 2217-9 outrunner with 950 kv
2. A 20 amp ESC with governor.
3. A hyperion 3S 850 mah battery
4. Either an APC 8x8 prop or 8x6 prop.

I found a minimum of 40' is required for the Baby Clown to have sufficient "airspace" for stunts.
To get good line tension on overhead 8s I need the 3.5 sec lap time. To get this performance the battery power is about 100 watts. I am still experimenting to optimize the motor and prop combination but this setup is entirely satisfactory and is probably what I will stay with. The weight on the tripod to keep it from being pulled over is 15 lb.

Yeah, a young guy by the name of Bob Underwood designed a plane and had it published that could be control line, tethered with the radio for the throttle and elevator.  Then the same plane could be flown strictly RC.  Can't remember the name of the plane.  He was District VI VP for years before moving to headquarters.  He was the one I went to to get control line mentioned in his articles as Swope Park was in his district.  I live in district IX and could nothing out of our VP.  Having fun,  DOC Holliday