Electricity has finally come to Control Line!
Maybe control line flyers are a little bit more traditional than other species. After all - the capabilities of the human body and brain have been developed over millions of years and do not undergo changing cycles as fast as present day technology revolutions. Nevertheless the electric drive has been accepted within our circles, and there are some strong arguments to use this kind of technology.

     
Contest flyers generally do not immediately switch to new gadgets just because these are available. After all their placings depend on their equipment. Only when this has been developed to a level which at least can keep on par with existing methods, new equipment will be considered. Quite understandingly so, since there’s still a lot of development to be done.
. But there are also those for whom experimenting is a prime factor in their modelling world. Thierry Saunier ( France ) is one of those who have accepted the challenge and has managed to use this power source quite successfully. Being a creative mind he didn’t choose a common beaten path, but instead decided to mix a combination of state of the art design concepts, semi scale appearance, and modern electric power technology. And quite convincingly, at that!
At a contest in Italy we found some time to talk about his endeavours. Thierry very freely gave away full information about his equipment. For an “electric blank” like myself the necessary information is difficult to obtain, so this kind of information is invaluable. I’m sure for many people it can serve as a starting point for own attempts in this “current circuit”. The table below will give all the details.
     
   
airplane Morane-Saulnier MS 1500 "Epervier"
design aerodynamic layout is influenced by the Beringer school of design and very close to these dimensions and proportions ( wing shape, flap size, tail moment arm, etc.
weight 1750 gr ( including 50 gr noseweight )
motor AXI 2826/10
propeller

Graupner Cam Prop 12,5 x 6 . Also used APC 13 x 6,5 electro

battery LiPo Polyquest 4S 3700 , weight 382 gr
controller Phoenix 60 preferred for safety ( to control temperature ). Also used Phoenix 45
timer

JMP programmed for three flight phases:
1) 15 seconds low power while walking to handle
2) sufficient power to fly schedule up to Squarel Eight
3) after Square Eight power is slightly and continuously increased
until end of flight

used current 3000 mA
charging at 0,5 C, at about 2 A. Each battery is used only once each day. Each charge is marked on battery to control number of cycles.
charging time 2h 20 min for 100 % full charge
flight time 5:30
current draw 36 A checked on the ground. In flight about 32 A. More at the end of flight.
   
  While for some the soothing sound of a strong combustion engine cannot be simply replaced by any invisible and inaudible electrons, the electric way might just be the only possible one for many of us in the future. So - not only out of curiosity but for real sound ( sound! ) reasons we should throw a keen eye on this development.
And after all - why not !