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Can't unscrew stock arrma mega motor bolt using hex screws

Discussion in 'Granite' started by Ces'tLaVie, Sep 6, 2017.

  1. Ces'tLaVie

    Ces'tLaVie Well-Known Member

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    Need some help as I couldn't unscrew the two motor bolts attached to the stock motor of my arrma granite mega using my hex driver. The stock screws are too tight. My motor is a brushed one that's why I need first to disassemble the motor from the body and perform a break-in. I'm new to this hobby that's why I don't know other means to solve this. Please help. Thank you in advance!
     
  2. Bri26

    Bri26 Well-Known Member

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    Are you using the right size hex driver? I am pretty sure that it is 2mm.

    Best regards,
    Brian
     
    Ces'tLaVie likes this.
  3. Ces'tLaVie

    Ces'tLaVie Well-Known Member

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    Hi sir,

    Yes I'm using a 2mm hex driver. I'm thinking maybe because I bought it as RTR that's why the screws are way too tight from stock. How will I be able to unscrew this sir? Thank you for the reply sir!
     
  4. Alfalfabklyn

    Alfalfabklyn Active Member

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    If it has lock tight on it which usually it does from factory.what I do is take a hot soldering gun put the tip of soldering gun on the screw for a few minutes it melts the lock tight then try to unscrew it..or put a vise grip tight on the mm driver u using also..Hope all works out for you..
     
    Ces'tLaVie likes this.
  5. Ces'tLaVie

    Ces'tLaVie Well-Known Member

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    Hi sir, do rc straight from factory apply lock tight on the screws? If so, maybe I have to apply something hot to the screws to loosen a bit the tightness. I have uploaded the actual hex nut right now. Thank you for the replies!

    20170907_080236.jpg
     
  6. Alfalfabklyn

    Alfalfabklyn Active Member

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    Also if you have a small vise grip you can grip on the hex screw and turn it..or if you have a dremel u can make a line across the hex screw deep enough to use a flat screw driver to unscrew it..
     
  7. Ces'tLaVie

    Ces'tLaVie Well-Known Member

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    Will do sir thank you very much!
     
  8. RcDaddy

    RcDaddy Well-Known Member

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    I had the same issue on my granite. Heating them didn't work and I stripped em. I just used dremel and a regular screwdriver been using them like that ever since. Where ever these arrma vehicles are assembled they loveeeee there loctite!! All 3 arrma I own had same issues!!!
     
    Ces'tLaVie likes this.
  9. Bri26

    Bri26 Well-Known Member

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    It looks like at least the one screw is stripped out. It's really important that you uses a high quality hex driver or Allen wrench. I recommend the Dynamite hex drivers. As mentioned by the other poster. You shoudl be able to slit the screw and get it out with a flat head screw driver.

    Best regards,
    Brian
     
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  10. Ces'tLaVie

    Ces'tLaVie Well-Known Member

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    Thank you for the replies sir! Will consider all your suggestions. Thank you again!

    Regards,
    Ces'tLaVie
     
  11. Permafrost

    Permafrost Active Member

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    Arrma puts a teaspoon of loctite on those motor mount screws. I was not able to get them loose after 30 minutes of heating with 150W soldering iron, but stripped them instead. Then I put the car upside down on an anvil, making sure that only the motor mount was in contact with it. I then hammered in a torx bit, that was one size too big, into the stripped hex screw, mounted a ratchet on the torx bit and managed to get the screw loose.
     
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  12. Nietrijker

    Nietrijker Supporting Member!
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    Some hex bits have a somewhat rounded tip, others are more square (note the differences are tiny). I have several different bits, all the same size, just for this purpose, as screws are different shaped on the inside. A rounded tip in a square hex screw will only work if the screw is not very much tightened. When the screw is damaged already, the advice from Permafrost is a very usable one...
     
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  13. Ces'tLaVie

    Ces'tLaVie Well-Known Member

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    Yes sir hopefully I can fix this tomorrow as I will go to the local hobby store to pickup some body shell and tamiya paints. Thank you very much!

    Regards,
    Ces'tLaVie
     
  14. Kenblazer318

    Kenblazer318 Well-Known Member

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    I couldn't get mine off on my Granite BLX either, So I bought a new Red Aluminium one.LOL
     
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