Motor heat part two

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  • DPeterson
    Senior Member
    • Apr 2007
    • 842

    #1

    Motor heat part two

    OK - the other motor heat thread imploded. I am still curious about a few technical things. My questions have nothing to do about either racing associations rules or spec motor selections. Can we keep it this way please.

    I think we can agree - the obvious - motor mass, quality of wire, quality of varnish and wire separation allow us to run a particular voltage through a motor before meltdown.

    So - the questions:
    1. What is the difference between 2,4 and 6 pole motors relative to heat. Is it a given that a 2 pole will always run cooler than a 6 pole? Also reference was made that once you mix up pole counts in a spec motor situation you loose parity. I have not seen this yet so I am curious as to why this would be. I am under the impression more poles have more torque and less poles are more rpm/efficient. This is not what we experienced when we ran the 2030 against the TP. So now confused.

    2. I think this got answered for me already but I will ask it here. Some esc's ask and are programed to run with motors of a particular pole count. The answer I got was that this is mainly for data logging. Is there any other effect on efficiency and or heat generation?

    3. I know from experience that increasing the timing to a motor will generally create heat. Is this mainly true for higher pole count motors? My 2 pole Lehners loved high timing. Is this a pole count related issue or an issue across all pole counts?

    4. When I tested the TP 3630 motor in my P-Limited mono I tried to burn it down by over propping it something stupid and running it way longer than I should have. As I went up on prop size I could see the boat slow distinctively. What is the technical reason for this? I would have expected a faster boat or an out of control boat and then a puff. I am building a new mono so I didn't care.

    Looking forward to learning more.

    Doug
    Doug Peterson
    IMPBA 19993
    www.badgerboaters.com
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