Some nice work and love the water.I would suggest in the future to use a potentiometer in the future between the motor and power source.This will get a more realistic scale speed.I used one on a 1/24 scale Hurri years ago on the side of the plane hardly see it and put the switch for "off" and "on " on the bottom.It work for years (5-10) with the battery permanently sealed in the fuse.Cheers