Ali
It's very nice to think of me, but I can not help you with your balancing system.
I think propeller manufacturers can do that, and they can do the necessary tests, which I would not do on my plane.
There is an Aeroclub in Chatillon, near you, I think you can talk to them, they will put you in contact with propeller manufacturers.
I do not make any modifications on my plane, except those authorized by the administration, the manufacturer of the plane or the engine manufacturer.
I think you thought of me because I solicited this forum, as it was his goal, already more than three years ago.
I do not think this forum will be a great help to help you design or experiment with a new balancing system.
There is no rejection on my part, with respect to you or your system, I just think this conversation needs to be put back on track, which will allow you to move in the right direction.
Note, moreover, that here is a forum on the problems and correct uses of the Rotax 912/914 engine.
Thank you for your future understanding, and thank you for respecting my decisions.
Jacques
