So after waiting such a long time, now time for testing, because I had serious doubts about the strength of the servos Hitec HS 805BB. The piston I have designed is obviously something that use a lot of torque, if I could work out to make "supermodified" servos all my doubts would vanish. I have not enough electronic knowledge for to do that yet.
Anyway I was happily surprised when I first plugged the arm and saw that it actually pulled up the whole thing at once.
