RussMall, I am the wrong guy to ask when it comes to E-Power. Go for it. The factory is waiting for someone to electrify one. They think it is a good candidate because it is so lightly loaded. Sneak around in the Electric forum, they fly some big planes too. I have not decided which engine I will use. The factory demo uses a MVVS 61 but they have proto-types powered by 46's and 4 stroke 90's. I will most likley go with a 2 stroke 56 or a 61. OS or thunder tiger. I wanted to use an RCV 91 but they get so darn much money for them. By the way, the 4 stroke in the build manual is an 80.