RE: ESM 50cc Corsair
The Zen G62 weak ? This engine has been routinely flying Warbirds as heavy as 40lbs for many years. I have had quite a few of them and have one now in my TFGS Corsair in the 30 lb range. You will also need the added weight of the G62 in this application. I have never ever yet had one to dead stick on me. You should further research your decision. One way to do that would be to look in the gas engine section and see which engine people are having trouble with. Just refine the search at the bottom and type in any engine you want and you will get your answer. Good Luck, Kevin.