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    D class Dog Boat
    by Muskrat ๐Ÿ‡ฌ๐Ÿ‡ง ( Warrant Officer)
    ๐Ÿ“ฃ










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    20 Posts 19 Replies 1 Photo 12 Likes
    ( Newest Posts Shown First )
    stevedownunder
    Commander
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฆ๐Ÿ‡บ Australia
    Online: 7 minutes ago
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    Great result Jon.

    Cheers,
    Stephen.
    1
    Rowen
    Commander
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡จ๐Ÿ‡ฆ Canada
    Online: 12 hours ago
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    Think once it using the water and under load it will probably quieten further
    Good luck
    1
    Muskrat
    Warrant Officer
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 2 hours ago
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    Hi Dave, I have had a play with the wiring this afternoon I wired the motors in series and bravo 80% quieter I can put up with that. I should think with the decking fitted it will be really quiet.

    Cheers Dave much appreciated Thank you. ๐Ÿ‘
    1
    j a Easter.
    dave976
    Sub-Lieutenant
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 10 minutes ago
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    Hi Jon
    Hope you can find an acceptable solution. If you have a 12v battery you could try that and see if the higher voltage reduces the whine.
    dave976
    1
    Muskrat
    Warrant Officer
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 2 hours ago
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    Hi Dave I have a new 400 motor at my Dads garage i will that a go and i will give a go wiring at wiring the motors in series. As you say having the deck on will help a lot to keep the noise down, i will try both ideas and let you know either way.

    Thanks again for your help Jon.
    j a Easter.
    dave976
    Sub-Lieutenant
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
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    Ok. Try connecting the motors in series and see if there is any difference. Do you have another motor you can connect to see if the noise is still present? I have looked on line and seen other posts with the same or similar problems. I suspect the motors are causing the noise but it will do no harm and may not be noticeable on the lake and is reported to reduce at higher speeds, which I suspect is how you will be running your model. Mounting the motors on rubber mounts is said to reduce the resonance but I suspect you will always have some noise. I would ignore as far as possible and with the deck on the noise may not be so noticeable.

    Dave976
    1
    Muskrat
    Warrant Officer
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 2 hours ago
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    Hi, It is a little quieter with one ESC disconnected, disconnecting one motor makes no difference and of course with both there is no noise. i did the same with the other one and no difference on the other ESC and motors.
    j a Easter.
    dave976
    Sub-Lieutenant
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
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    Ok so I think we need to start a process of elimination. Disconnect one esc and see if the noise is greater or smaller. Then disconnect one of the motors and see if any change. Do the same with the other Esc and its motors. Please advise what results you get so we can progress to the next step
    Dave976
    Muskrat
    Warrant Officer
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 2 hours ago
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    Hi Dave, I am using four Deans marine Kestrel five Motors 4.8 to 12 volts, Two Viper marine 20 ESC controllers, I have wired two motors joined together in parallel to the one ESC. I have also used a Y lead to join the two.

    Cheers Jon
    j a Easter.
    dave976
    Sub-Lieutenant
    ๐Ÿ“ D class Dog Boat
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
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    Hi Jon
    The sound is caused by the frequency used by the ESCs. Used to be a problem several years ago with some ESCs. How have you connected each motor to its ESC - are they in series or parallel? The number of windings will affect the frequency (noise) produced so changing from say series to parallel may reduced the noise level. It would help to know the make and size of the motors and ESCs.
    dave976
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