The Jupiter Duck in it’s original design has a 25″ wingspan. I decided to double that to 50″. So the question came up about what motor / ESC combo to use. The wing without the power pod weighs just under 4 oz. So it’s going to be a light weight. The 200% Ducks that I found on the Internet did not have any information about power. So I decided to try a Park 400 motor. The recommendation is to use a 10-20 am ESC. The Park 400 comes with 3.5 mm bullet connectors while the 10 amp Eflite ESC comes with 2 mm connectors. Now what? As it turned out after a fair amount of internet snooping around I discovered 3.5 mm female to 2 mm male bullet adapters. Bought the last two on Amazon. Almost every 10-20 amp ESC that I found had 2 mm connectors. Just seems like the Park 400 should come with the same size connectors as most recommended ESCs. My 2nd grade teacher, Mrs. Schnitzer, used to say that solving problems make you smarter. They do. Embrace them.