The Electra that's hanging on my shop wall is about to get an upgrade. I'm replacing the the Goldberg 550 motor with a geared Master Airscrew 500. I'm also going to take out the old AM Futaba with the speed control built into the receiver, replace the two servos with HiTec HS81's and go to LiPoly batteries. That is not going to be the cheapest thing I ever did but the airplane flys so well with the old stuff including a battery that weighs over 1#. I think it will be worth it. It is one sweet flyin' bird.