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Question on trolling motor's mechanism
Folks,
I am a total novice in this field. Please pardon me if my questions sound stupid. Trolling motors typically have three main parts. The propeller assembly, shaft, and a device attached to the handle for navigation. My questions are as following: 1. Where is the actual drive motor residing? Is it in the propeller assembly itself or is it in the device attached to the handle, and the power is some how being transferred to the propeller using some kind of gear mechanism? My guess is that the motor is connected to the propeller itself. 2. I am looking for a used DC Motor controller. I intend to buy a small trolling motor with small (9-11 lbs torque). Can you advise, what specifications should the controll have (Amps). Will a 15 AMP controller do? 3. I am sure controllers for marine applications are much more robust and built to last. Can you please suggest a good source to buy a used controller. Thanks so much. Ash |
#2
posted to rec.boats.building
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Question on trolling motor's mechanism
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#3
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Question on trolling motor's mechanism
Mr. Swarts,
Thanks so much for your valuable input. Ash On Jun 19, 10:56 am, R Swarts wrote: wrote: Folks, I am a total novice in this field. Please pardon me if my questions sound stupid. Trolling motors typically have three main parts. The propeller assembly, shaft, and a device attached to the handle for navigation. My questions are as following: 1. Where is the actual drive motor residing? Is it in the propeller assembly itself or is it in the device attached to the handle, and the power is some how being transferred to the propeller using some kind of gear mechanism? My guess is that the motor is connected to the propeller itself. Most trolling motors consist of a direct drive permanent magnet motor in the lower housing of the motor where water helps keep it cool. Conventional motors may also have resistors or "speed coils" in the lower unit that are placed in series with the motor by the controller in the upper unit to diminish the thrust and, to some extent, the current. The controller in this case is simply a switch. The prop is connected directly to the shaft of the motor. 2. I am looking for a used DC Motor controller. I intend to buy a small trolling motor with small (9-11 lbs torque). Can you advise, what specifications should the controll have (Amps). Will a 15 AMP controller do? As a generalization, most 12 volt trolling motors draw around one amp per pound thrust. A 15 amp controller should do for an 10 pound thrust motor. However, unless you plan to spend a lot of time at less than full thrust, a pulse width modulating electronic controller is scarcely worth the time or effort. 3. I am sure controllers for marine applications are much more robust and built to last. Can you please suggest a good source to buy a used controller. Used controllers, I don't know. But new ones are available from suppliers of parts for scooters, mopeds, etc for considerably under $100. Thanks so much. Ash- Hide quoted text - - Show quoted text - |
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Question on trolling motor's mechanism
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