- 1). Grease the O-rings using white lithium grease, which is preferred or, as an alternative, with Vaseline. A light coating is all that is necessary.
- 2). Run your finger around the edge of the delay insulator tube to tamp down the factory-made edge. Insert the delay and the delay spacer until flush with the insulator tube.
- 3). Insert a greased O-ring into the forward insulator. Then, insert the previously constructed delay element into the forward insulator, with the delay component closest to the small end of the forward insulator.
- 4). Tape the two pieces of the propellant together, making sure to align the two grooves. Insert the combined propellant into the propellant liner, then that entire assembly into the reusable engine case.
- 5). Insert an O-ring onto the top of the propellant assembly, then twist the previously assembled forward insulator unit into place at the top of the motor.
- 6). Insert an O-ring into the other end of the engine assembly, away from the forward insulator unit. Insert the igniter into the groove in the propellant until it reaches the forward part of the engine and stops.
- 7). Place the nozzle over the igniter, then secure it down with the closure and screw it down tightly.
- 8). Place the ejection cap on a level surface, tapping one end so the powder shifts to the bottom. Remove the top portion of the cap, then take the motor assembly and place the forward end gently into the powder-filled ejection cap.
- 9). Cut a groove into the top of the ejection cap that was removed in Step 8. Place that cap over the igniter to secure it in place. The motor assembly is then ready to be installed for launch.