Kirby looks like he put a tray of some sort rite under the motor.As for batteries taking off the cowel to change the battery packs looks easy too. This one thing that I lookat when I do a big size plane conversion.I LIKE TO FLY,"NOT WEIGHT FOR MY BATTERIES TO CHARGE![:@] Like when I fly my sig s/e I bring 3 16 packs to fly with.(sorry to get off the subject).andy120 I say go for it!!! have fun,stefanP