Testing Thruster
Before launching the EchoBoat check the thruster motors for proper operation.
These thrusters are lubricated by water and should be wet for the following test.
Do not run the thrusters for more than a few seconds out of the water.
B
Refer to propulsion system calibration procedures if you notice the thrusters
are not spinning evenly, or if the propulsion system does not operate as outlined in
the thruster test below.
Note: the thruster motors are designed to be counter rotating. With forward thrust
both propellers should rotate inboard, that is, port propeller rotates clockwise and
starboard propeller rotates count-clockwise (as viewed from standing behind boat).
With reverse thrust the propellers should rotate outboard.
C
Forward Thrust Test: While holding a piece of paper approximately 6 inches aft
of each thruster motor, slowly push throttle joystick on remote control unit straight
forward. The paper should be pushed away from the thruster motors, that is,
thruster motor will blow air aft of the boat. This indicates forward thrust of the boat.
D
Reverse Thrust Test: While holding a piece of paper approximately 6 inches
aft of each thruster motor, slowly pull throttle joystick on remote control unit straight
backwards. The paper should be pulled toward the thruster motors, that is, thrust-
er motor will blow air toward bow of boat. This indicates reverse thrust of the boat.
E
Turning Thrust Test: The propulsion systems uses differential thrust to turn the
boat, that is, as one motor provides forward thrust the other motor provides reverse
thrust.
Use the paper technique to test forward and reverse thrust of each motor while
turning port and starboard.
Turn to port:
Slowly push throttle joystick on remote control unit forward and to the left. The
port motor will provide reverse thrust and the starboard motor will provide forward
thrust.
Turn to starboard:
Slowly push throttle joystick on remote control unit forward and to the right. The
starboard motor will provide reverse thrust and the port motor will provide forward
thrust.
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