I only have the one electric, the new one is built or framed up but all the gear from the first one is going in the new plane so I know no more about electrics then I did when I built the first one. I went over to watt flyers and read the above post then got on the beginners forum for more info, super bunch of people and I learned enough to get me going. To date I have never seen a chart for complete cross over. I have seen some over the years but nothing complete. Some of the motor manufactures have cross over charts but you have to search them out. Joining the watt flyer forum is the best way I found to locate information and ask questions. I still don't understand much but my plane sure flew good and had way more power then I thought it was going to have. I like electric but it just isn't something I would do 100%, it lacks that wonderful noise of a real engine but I sure like the no clean up and instant starting and flying!!!