Colin, that's great, but consider a beginner trying to make some sense of all that. I am an engineer and some of it really taxes my pea-brain There has to be an easier way.

Phoenix... yeah, I've seen that too, which, to me, is very helpful when trying to see what will work with a certain type of plane. Unfortunately, a lot of us fly planes that weigh in at 5 + pounds. Try to figure out what the equivalent electric power for that would be, if that was what one was looking to do.

Most of the electric power is useful for lighter aircraft. Consider a recent topic about the Goldberg Progege. Yeah, it's out of production, but supposed a person had one that he/she wanted to convert to electric. There are several factors that come into play here, and all are very expensive propositions. But, aside from that, what would a person need to do to fly this plane that has a range for glow from an OS .55 to an OS .75.. that is quite a range of power options. What electric conversion would work for that?

It takes quite a bit of calculation to get it right, and if a mistake is made, then what?

Jeffe.. yes, watts per pound for flying style is a great place to start. But, that's not the point here. What is the point is trying to make sense of what is offered to us for options.. there are way to many options with electric power... there is no real consolidation of what is available. If you know a manufacturere, for instance, and stick with them, you are ok. But there is no comparision between manufacturers. With glow, for instance, a .46 two stroke from just about anybody, is pretty much a .46 glow two stroke and you can go wiht that with anything that recommends a .46 two stroke glow engine!!! Not so with electric.. as far as I can see, anyway.

As I said, there should be some easier way to do this.

CGr.