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    Followers
    New radio- strange behaviour.
    by ianed57 πŸ‡¬πŸ‡§ ( Sub-Lieutenant)
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    28 Posts 27 Replies 0 Photos 75 Likes
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    CB90
    Sub-Lieutenant
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 5 days ago
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    Hi ianed57 and Shipmates,
    Reading through the post I think it could simply be poor main batteries, If his battery pack is not in good condition or or has poor connections under load the supply voltage will drop the ESC's BEC will not be able to maintain a voltage to the receiver the Mtroniks ESC needs a minimum of 6v to operate correctly (BEC).

    On your first post you mention AA batteries, I assume they were his main power supply, if he only has 4 in series his max voltage will be 6v, and could easily dip under that, under load, causing problems to the receiver supply from the ESC.
    Regards
    Roy
    2
    Ianh
    Midshipman
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡ΏπŸ‡¦ South Africa
    Online: 3 hours ago
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    Another suggestion and please don't take it the wrong way. Try earthing the motor case to the brass propshaft.
    3
    Only old in years not mind or soul.
    Scratchbuilder
    Sub-Lieutenant
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 4 hours ago
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    Hi Ian.
    This is a strange one and causes a little scratching of the old grey matter.
    Importantly,it’s annoying for your friend and no doubt yourself.
    I don’t thing anyone is being abrasive in the true sense.
    We all express ourselves differently and sometimes like text messages on phones things can be taken out of context.
    Is he sailing on the Exeter flood relief system or salt water.
    Look at the possibility of a dry joint as I suggested before,and Yes the motors should be suppressed.
    Good luck.
    Regards Bill
    2
    Bill
    Martin555
    Fleet Admiral
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 47 minutes ago
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    Hi ianed57.

    It is a shame that your friend is not a member on this site as he would be able to test and answer all the suggestions and questions that have been put forward.

    I don't think anyone is intentionally being abrasive i just think they are just getting there point across.

    It is very good of you to try and help your friend with his problem, and hope he manages to find the solution.

    Although it would be interesting to know how this problem gets solved.

    Please keep us informed.

    Martin555.
    2
    If it looks right it probably is.
    ianed57
    Sub-Lieutenant
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 26 days ago
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    IanH,

    You're bit late as all this has been discussed ad nauseum.

    It's not my boat, I always suppress my own motors and I can't be certain my friend hasn't suppressed his, but I expect he has done knowing him.

    And I can't quite see the need to be so abrasive.πŸ€”

    Ian
    ToraDog
    Chief Petty Officer 2nd Class
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡ΊπŸ‡Έ United States
    Online: 23 hours ago
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    Looks like a motor needs to be suppressed.
    1
    Ianh
    Midshipman
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡ΏπŸ‡¦ South Africa
    Online: 3 hours ago
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    Graupner motor aren't supplied suppressed😊😊
    1
    Only old in years not mind or soul.
    Ianh
    Midshipman
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡ΏπŸ‡¦ South Africa
    Online: 3 hours ago
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    You should always suppress a motor even if you are running 2.4Ghz Consider the other people!
    2.4Ghz maybe considered an " I'm alright Jack" but consider other modelers and never get a 2.4 Ghz below the waterline
    1
    Only old in years not mind or soul.
    ianed57
    Sub-Lieutenant
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 26 days ago
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    Hi ToraDog,

    Yes, when we were sailing together on Monday he range tested by walking about 100 ft away and all was well. It was only in the water that things went south.

    When I passed on ideas from this forum to him I suggested that changing the motor might be a quick and relatively cheap way to either pinpoint it as the trouble or eliminate it but he seems keen to just change the radio over- and I don't blame him really.

    I didn't really clock the type of universal joint he was using but I expect it was one of the red Huco types. I very much doubt if it was an all metal job.

    Ian
    1
    ToraDog
    Chief Petty Officer 2nd Class
    πŸ“ New radio- strange behaviour.
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    Country: πŸ‡ΊπŸ‡Έ United States
    Online: 23 hours ago
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    Ian,
    Just for giggles, has your friend range tested his boat, out of water? It would be interesting to see if the issue arises, especially if the motor in the model is not run. It is very easy to get sent in the wrong direction at times and going back to basics can be a mind saver.
    Here is another thought from my archives, what kind of u-joint does the boat run? Metal, plastic, combination? If it is an all metal u-joint, similar to the old Octura units, they have been shown to create EMI, hence the plastic(Delrin) units with metal spiders. Just a thought.
    2
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