Little RC Pusher Tug

thingiverse

This is a compact pusher tug Its 275mm long and 100mm wide, with a displacement of approximately 650g. I designed this using Tinker cad. It was an enjoyable easy build and handles surprisingly well. The hull is printed in two halves on its side so you need a print area of at least 275x100x100mm. Use your slicer software to mirror the right hand hull half. It utilizes a brushed 385 motor running on a 3-cell LiFe battery, but anything of similar size would work. I have used a 15A speed controller but this could be smaller; I have a 5A fuse in it which hasn't blown yet. The rudder servo is something I already had, but any small servo should suffice. The hull is built too heavily due to the way I designed it, so use as little infill as possible (5%). The hatch and cabin are printed with a single layer wall thickness to add lightness above the waterline. The prop-shaft can be installed before gluing the two halves of the hull together with CA glue. Installing the motor was very difficult due to limited access and could be improved. Sailed briefly in the wind and rain, the large cabin means the boat gets pushed away from the 29/09/2019 Sailed better with the ballast weights removed to bring the bow up I was thinking that the hull could be printed as a bow and stern half possibly without support, which would enable it to be printed on a smaller printer