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How-to: Maintaining your Brushless Motor (LRP X-12)

Discussion in 'Batteries - ESCs - Motors Section' started by Martijn, Jul 11, 2012.

  1. Martijn

    Martijn Well-Known Member

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    How-to: Maintaining your Brushless Motor (LRP X-12)

    Your motor is important when it comes to racing. If your motor doesn’t work like it should, you will never win the race (or you have to be very lucky).
    Most people think a brushless motor is maintenance free. But there are actually a couple of thing that you should do to keep your motor in the best possible shape.

    What you'll need:
    • Hex screwdrivers
    • A brush or toothbrush
    • Bearing oil
    • Rag or paper towel
    • Compressed air (optional)
    Here is a picture of the motor disassembled, each part of the motor is named, I will use these names in the article so you will know what part I mean.

    [​IMG]

    Step 1:
    Unsolder the wires from your motor and remove the sensor cable.

    [​IMG]

    Step 2:
    Remove the gear cover so you can access the gears.
    Remove your pinion and the screws that hold your motor.

    [​IMG]

    Step 3:
    Take the motor out your car and clean it with a brush.

    [​IMG]


    Step 4:
    Remove the middle screw and take the plastic endcover of the motor.
    There could be some dirt in there so take your brush and remove the dust/sand.

    [​IMG]

    Step 5:
    Loosen the 3 screws that hold the motor together and remove them.

    [​IMG]

    Step 6:
    Take the front housing of and take the rotor out the stack, clean them both with a brush.

    [​IMG]

    Step 7:
    There will be some dirt on the bearing in the front housing so first remove the dirt and then lube the bearing with 2-3 drops of bearing oil.
    Let it sit for a minute and wipe the bearing with a clean rage or paper towel so the left over oil won’t attract dirt.

    [​IMG]

    Step 8:
    Remove the ‘PreciSensor Assembly’ and clean it with a brush.

    [​IMG]

    Step 9:
    You can pop the bearing out of the stack, also clean it first with a brush and then lube it with bearing oil, let it sit and wipe off the oil with a rag or paper towel.

    [​IMG]

    Step 10:
    Assemble your motor back together, don’t forget the little shim(s).

    Just to let you see what dirt and sand can be in a brushless motor.
    This is the amount that I managed to get out my motor.

    [​IMG]
     
    NioNai likes this.
  2. LeeSc10

    LeeSc10 Well-Known Member

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    Very nice write up. I will be cleaning my motor this week to go to my first race this sunday.
     
  3. Martijn

    Martijn Well-Known Member

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    Thanks, if you find any error (English, grammar, verbs..) tell me ;)
     
  4. LeeSc10

    LeeSc10 Well-Known Member

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    Will do. :thumbsup:
     
  5. tmail61

    tmail61 Well-Known Member Factory Member

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    Step 1:
    Solder the wire of your motor and remove the sensor cable.

    Should be :)

    Step 1:
    Unsolder the wires from your motor and remove the sensor cable.

    ===

    Step 4:
    Remove the middle screw and take the plastic endcover of the motor.

    Should be :)

    Step 4:
    Remove the middle screw and take the plastic end cover of the motor.


    =====

    I always forget this part!!!!! :)

    wipe the bearing with a clean rage or paper towel so the left over oil won’t attract dirt.


    ===

    Step 10:
    Assemble your motor back together, don’t for get the little shim(s).

    Should be :)

    Step 10:
    Assemble your motor back together, don’t forget the little shim(s).

    I just did the same thing in >>>> I always forget this part!!!!!
     
    NioNai likes this.
  6. Martijn

    Martijn Well-Known Member

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    Thanks for you help. :D
    LRP says its endcover..
     
  7. tmail61

    tmail61 Well-Known Member Factory Member

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    Maybe I should email LRP! :biggrin:
     
    Martijn likes this.
  8. Martijn

    Martijn Well-Known Member

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    Hahaha :p
     
  9. NioNai

    NioNai Well-Known Member

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    Thanks for the write up.

    I didn't see anything, so I wanted to ask, about how often should one clean there motor?
     
  10. Martijn

    Martijn Well-Known Member

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    I do this every month
    Depends how much you drive also..
     
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  11. tmail61

    tmail61 Well-Known Member Factory Member

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    and where!

    You would think carpet isn't as dirty as dirt/clay, BUT I have never had to clean dirt/clay out of my shocks like I have with carpet (fibers) tracks.

    Oil is the problem, fibers stick to the bottom and get worked into the shocks. Same thing with motor bearings.

    So, I like the rag to wipe off extra oil from the bearing! <<< see how I got back on track with the thread!!! ;)
     
  12. AERacer

    AERacer Administrator Staff Member Moderator Factory Member

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    I ran in a gymnasium last winter... Holy %"$"%$ a little of white micro dust everywhere....
     
    Martijn likes this.
  13. ucl

    ucl Active Member

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    Thanks for the info!
     
  14. Bill Justice

    Bill Justice Member

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    Cool, nice post. I love this web site.
     
  15. ucl

    ucl Active Member

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    How does stator or rotor size effect motor performance? Can you use it in the 17.5 class?
     
  16. Martijn

    Martijn Well-Known Member

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    Smaller diameter = higher RPM, less torque
    bigger diameter = lower RPM, more torque
     

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