Nylint Mercury XR4 Toy Outboard - Modified

I added a nylon shim to the propshaft to tighten up the gear lash and added carbon brushes to the end bell to allow this motor to run on higher voltages than the 3V it was originally designed for. The electric motor is now essentially a RC-260 (was originally a RE-260). Tested with a 6V pack and it ran well, churned a lot of water. Ran it with a 7.2V pack and it emptied my test tank!