I would like to say if I didn't update my website for a long time it is because i was working hardly on a new plane....or should i say on a new project...In few words the aim of it was to fly with counter rotating motor on f3p plane and use it for the F3P French Championship 2011!

I thought for the first time to use a such system two years ago but without enough experience and skills the project was reported...last year we made the first test with Donuts Model. The first motors worked well but it were too heavy, in despite of that the first feeling in flights motivate me to follow in this way, I keep it hot and was looking for a way to reduce takeoff weight....

The main advantage of a counter rotating motor is to reduce all torque effects which are so important on indoor planes. But over that I was hopping more...from my point of view on an indoor plane this system is really interesting for many other points, which are different compare to what is look for on full scall planes:

• It provides a good airbrake in down line thanks to the two props.

• Flight attitude are similar on knife edge right and left  both, which is very interesting when you see how many manoeuvres are drawing drom knife edge flight.

• Changing of roll direction is easier and faster than with a one shaft motor...

I was still looking for tips to reduce the takeoff weight when I saw a plane of Martin Muller on which he used mylar film....after some test  by myself the airframe was lightest than an 3mm deprom milled airframe...but take off weight was still to heavy! And the only way founded  to reduce again the weight was to use 6mm depron on a airframe make up with thin beam....Thank to CATIA I made the first drafts and weight estimations!

I built four planes and 4or5 motors betwen december 2010 et end of March 2011. Bellow a quick resume of upgrad and tips test on each one.

V1....At this moment I was still looking for a name for this plane:

The motor was about 40g and props came from rctoys.com. Thanks to weight the stability was good but it flew fast!!!!!

Flight atittude was the same on both knife edge....but the no symetric fuselage made it not so easy to control.

V3...and The Spies is born after a funny story of spying!!! I used this plane for the IITOP, Lithuanian Championship and Wall-Halla. I designed again a new fuselage, to improve yaw control, new SFG and used 2 servos for ailerons. But I made a new motor with lighter rotor and stator, by this way the takeoff weight was about 150g....which is better!!! This version was acceptable, but quiet heavy for small hall, prop was noisy and the transparent airframe made the plane hard to see in flight.

Here a flight in a small hall during the wall-halla cup in Germany...

V4....built few day days before the F3P french championship...for it I safe weight on the airframe, made new home made props less noisy, designed to provide better airbrake, lighter and more efficient. The aiframe was fully painted and stabilisator, SFG and fuselage were slightly modified...And i can say that is the best f3p plane i ever used!!!

In resume, i can say that this project was one of my most interesting experience in my RC-Life and  I won the F3P French Championship 2011 which is the cherry on the cake!!!

I can't tell everythings about this project here...but we are preparing commercial applications of the motor and plane, I will say more about it his summer.

By the way of this website, I want thanks all people who help me on this project...they know who they are ;-)