Assembling and Waterproofing the Thrusters

Materials

 * 3x Brushless Outboard Motors
 * 1/8" heat shrink tubing
 * 1/4" heat shrink tubing
 * 3x 1/2" x 1/4"OD x 1/8" ID Nylon Spacer
 * 18ga wire

Tools

 * Razor or Xacto knife
 * Soldering Iron
 * Hot glue or epoxy
 * 1.5mm hex wrench
 * Liquid Electrical Tape

Preparing the Motor

 * 1) Take off the snap ring from the base of the motor (the snap ring looks like a C).
 * 1) Slip off the outer shell of motor.
 * 1) Using a razor, make an incision down the length of the heatshrink on the three wire leads and remove it.
 * 1) In the same way, make an incision along the length of heatshring that is on each of the three individual wires and peel it away each wire.  Be careful not to damage the magnet wire underneath the tubing.
 * 1) Desolder the wire leads from from motor.  Note: The three conductors on a brushless motor can be hooked up in any order- if the motor spins the wrong direction for a given input, any two of the wires can be switched and the motor will spin the opposite direction with the same signal.  For this reason, it is unnecessary to keep track of which color wire-lead went to which terminal on the motor.
 * 1) Cut your new wire to the correct length (65cm). See  for an idea of how much wire you will need. Alternatively you can leave them extra long and cut them later. Note: the color of the wire in your kit may vary
 * 1) Now, solder the three wires onto the motor leads.
 * 1) Apply liquid electrical tape to each solder junction using a brush. This will help prevent shorting between the wires during operation. Hanging the motor by its wires or clamping the motors and letting the wires dangle will help make application easier. Wait a few minutes then reapply the liquid electrical tape, being sure that all exposed solder gets covered. Do 2-3 coatings.
 * 1) Take this opportunity to tighten the two set screws in the motor mounting bracket with a 1.5 hex wrench.
 * 2) Once the last coat is a little tacky but not fully dry, place heat shrink over each of the three individual wires.
 * 1) Then, apply about 2" of heat shrink to the set of three wires together.
 * 1) To reduce corrosion, spray the motors (both inner and outer part) with silicon spray (see deployment).
 * 2) Repeat these steps three times for each motor

Attaching the Propellers to the Motor
These instructions are for attaching the Propellers are for v2.4, for v2.3 see this guide here. You will need these parts for these steps; a motor bell, a nylon spacer, and a propeller


 * 1) Take the nylon spacer and press it into the prop hole on the flat side of the prop
 * 1) Press the nylon spacer flush into the prop face by pushing it against a flat surface or using a hammer to tap it in
 * 1) Now on the other side of the propeller shaft hole, there should be a gap where the nylon spacer doesn't reach; fill this gap with hot glue or epoxy until it just starts to overflow
 * 1) While the glue is still fluid, press the shaft on the motor bell into the hole so that the shaft goes through the center of the nylon spacer, and the top of the motor bell pushes into the overflowing glue and up against the prop
 * 1) Wipe off the excess glue that has come out of the hole on the front side of the prop, but leave the blob of glue between the motor bell

'''Note: the nylon spacer is really only there to keep the shaft and the prop concentric. The glue is doing most of the work bearing torque and longitudinal forces '''