Bow thruster question

[PlanB]

Have a RT 27 OB with bow thruster. Is there a consensus as to how long a time the thruster joystick can be used before letting the motor cool down and the thruster joystick be used again? I've seen discussions to use the thruster anywhere from 5 seconds to several minutes but personally have found a short burst of 3-5 seconds hasn't been that helpful. Don't want to burn out the motor but apparently I'm not using the thruster for a long enough time. What parameters have y'all used?

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[dbsea]

from what I've read and heard on this forum, 5 seconds is about the max per use. I have run into situations (mind you I'm still a novice with a single screw boat) where I've relied too much on my thrusters and I ran the battery down to the point where they wouldn't run anymore, putting me in a bind in a windy docking situation. I think you'll run your battery down or break your shear pin before you actually burn out the motor, but I might be wrong about that 🙂

 

[SJI Sailor]

As long as it takes to start moving — which is about 3-6 seconds in my experience. If it’s a lot more than that (e.g., more than 10 seconds) then you may be better off to back out, regroup, and try again rather than fight the wind or current. As dbsea notes, prolonged usage will run the battery down and increase risk of pin shearing, etc.

 

[misinger]

Max use: S2 = 3 min. or appr. 7-10% within a limited time frame. All electromotors are protected against overheating.

Safety: Electronic time-lapse device protects against sudden change of drive direction. Electric thermal cut-off switch in electromotor protects against over heating (auto reset when electro motor cools down).
Shearpin between electro-motor and driveshaft protects electromotor and gearsystem if propeller gets jammed. If original Side-Power panel is used, the panel shuts off automatically 6 minutes after last use.
Integrated microprocessor monitors solenoids, reducing wear and risk of solenoid lock-in. Auto-stop of thruster in case of accidental solenoid lock-in or if run signal is continuous for more than 3 minutes.

https://yachtaidmarine.com/wp-content/u ... tected.pdf


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[misinger]

• The maximum continues usage time of the electrical thruster is approximately 3 minutes. The electromotor has a built in thermal cut-off switch that will shut off the electromotor if it is overheating and re-engage it when it has cooled down some. This should be considered when planning your maneuvering.

https://www.bme.net.au/wp-content/uploa ... Manual.pdf


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