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    Motor identification.
    by Martin555 ๐Ÿ‡ฌ๐Ÿ‡ง ( Lieutenant)
    ๐Ÿ“ฃ










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    9 Posts 8 Replies 1 Photo 6 Likes
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    DodgyGeezer
    Midshipman
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 46 minutes ago
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    I keep mine. They are good for something. We just have to find out what.

    There are quite a lot of complaints about unknown motors for model boats around - because, with the huge boom in power tools and power everything, there are quite a lot of these unknown industrial motors around.

    I don't know what kind of boat you want to drive, but I would look at the motors to see if they look to be good quality - 5 or 7 poles would be more expensive - and then test them out for revs, heating and power drain to see if they would suit the job you have...
    2
    Martin555
    Lieutenant
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 3 hours ago
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    Hi DodgyGeezer,
    Thank you for the information.
    I think I will follow the instructions on the video .
    Thanks again.

    Martin.
    If it looks right it probably is.
    DodgyGeezer
    Midshipman
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 46 minutes ago
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    Oh dear - they look like some Johnson can motors. Johnson is a company which specialises in industrial DC motors for power tools, car windows, etc. It does a bewildering variety of them - as do many other companies, but I tend to think of them as generically 'Johnson'. See https://www.johnsonelectric.com/en/product-technology/motion...

    They are often hard to identify, and will be good for the thing they are designed for, which may be nothing like a model boat engine. In particular they may be designed for intermittent use, low or high torque, high drain...or anything else. They may be good for a boat - they may be useless. And it depends on the boat - if they are ex-drill motors they may rev quite fast...

    Check the number of poles - more than three and the motor may be a better quality one. Do the revs on your battery match what you want (between 5000 and 10,000, usually)? Is the no-load drain below 1A? Then the motor might be useful. Otherwise, see the video below: https://youtu.be/pNw0IWrn0hU


    I recall that Mayhem were very scathing of unknown can motors a little while ago - spool down to the bottom of this page https://www.modelboatmayhem.co.uk/Common/Electrics/How%20Fas...

    P.S - does the one on the left look like a turntable motor?
    https://www.johnsonelectric.com/en/product-technology/motion/dc-motors/automotive-dc-motors/low-voltage-dc-motors
    ๐Ÿ”—
    https://youtu.be/pNw0IWrn0hU
    ๐Ÿ”—
    https://www.modelboatmayhem.co.uk/Common/Electrics/How%20Fast.htm
    ๐Ÿ”—
    โ–ถ๏ธ
    1
    Martin555
    Lieutenant
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 3 hours ago
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    Hi Doug,
    I have just asked the wife to photograph some and she said there is absolutely nothing on them.
    If it looks right it probably is.
    RNinMunich
    Fleet Admiral
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฉ๐Ÿ‡ช Germany
    Online: 12 hours ago
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    Hi martin,
    If nothing is printed / engraved on the can start by taking a close look at the end caps.
    Often at least the manufacturer's name, maybe also a type number may be embossed or engraved (plastic/metal) on the terminal end.
    Doug
    PS post some pics!
    Young at heart - slightly older in other places ๐Ÿ˜‰ Cheers Doug
    Martin555
    Lieutenant
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 3 hours ago
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    Sorry senior moment again.
    My question was for electric motors.
    I have a few lying around with no markings on them and was wondering if there was an easy way to find out what type they are.

    Martin.
    If it looks right it probably is.
    DodgyGeezer
    Midshipman
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 46 minutes ago
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    Wow - that's a bit of a wide requirement! I assume you are having difficulty finding some data?

    Are we talking I/C motors or electric here? Brushed or brushless? ....

    If the item has ANY markings you can usually look it up on the Web - though you may need to translate from Chinese. The big companies are easy enough to get English data from, but smaller ones may pose a problem. Recently I had to photograph the characters on a box of hydrometers, get that automatically translated from, I assume, Simplified Chinese, look up the company name in Latin characters, download instruction sheets with likely pictures attached and then translate those....

    A lot of things, including electric motors, are now made in China as 'clones' - that is, as copies of an original design, often sourced from the West, perhaps with a few modifications. Such items often come with very little info from the manufacturer, and may be made as a short run with a 'one-off' badge on them.

    Under these circumstances the only way you will get information is to have enough experience in the field to be able to recognise the item as being a copy of a known item and work from there. Often specialist forums have people who can help you here...
    1
    RNinMunich
    Fleet Admiral
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฉ๐Ÿ‡ช Germany
    Online: 12 hours ago
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    A good way to start is looking at manufacturers websites.
    Such as this from Mabuchi
    https://www.mabuchi-motor.com/product/knowledge/
    They may want you to buy minimum 1000 ๐Ÿค” but at least you can find out what to look for at their distributors / model shops / Ebay etc.
    Cheers, Doug
    https://www.mabuchi-motor.com/product/knowledge/
    ๐Ÿ”—
    1
    Young at heart - slightly older in other places ๐Ÿ˜‰ Cheers Doug
    Martin555
    Lieutenant
    ๐Ÿ“ Motor identification.
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 3 hours ago
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    Hi Doug and fellow modellers,
    One of my pet hates is the lack of/no information on the motors that we use.
    Are there identification charts available?
    I know there are many different manufacturers but with the lack of information on them I would not know were to start to find the information.

    Martin.
    1
    If it looks right it probably is.



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