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Opinions on king motor brand servos?

Discussion in 'King Motor Baja' started by RustyMiata, Mar 27, 2017.

  1. RustyMiata

    RustyMiata New Member

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    Just experienced my first runaway on my KM 5B due to the throttle servo being stuck wide open.
    Car was brand new and has only just been broken in.
    I heard on other forums that king motor servos ( especially the throttle servo) are junk.

    Has anyone else here had similar issues with king motor brand servos?

    ( as a result of the runaway my car spent 4 days at the bottom of a deep river and is pretty wrecked :mad:
     
  2. 92 vert

    92 vert Active Member

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    Sorry to hear....
    I would not run with the km servos.
    Grab a good brand name servo with a killswitch and your all set.
     
  3. oskygt

    oskygt Well-Known Member

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  4. Scruffy

    Scruffy Well-Known Member

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    Never run without a good remote kill. Lesson learned :)
     
  5. oskygt

    oskygt Well-Known Member

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    Get some hitec servos and a killer Rc kill switch, perfect combo
     
  6. RustyMiata

    RustyMiata New Member

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    just found out that when I purchased the car I bought a years insurance (accidental cover and faulty components) so looks like my car will be up and running again soon.

    definitely going to install a KILL SWITCH and Savox brand servos so this never happens again

    thanks all for your advice
     
  7. Paul G

    Paul G Active Member

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    Yeah same thing as Rovan servos. Happened to me shortly after I got my fist Rovan 5t. Probably shouldn't run near water either. The advice should be well taken as these guys and myself have already been there so you don't have to suffer. Lol
    Do the upgrades and enjoy it.
     
    #7 Paul G, Mar 28, 2017
    Last edited by a moderator: May 7, 2017
  8. crankestein

    crankestein Well-Known Member

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    Exactly the same thing happened to me, I brought it up with Dan from King Motor / Rovan and he looked the other way, to the point of banning me from never buying from them again. Runaway)1.jpg
    Runaway)2.jpg
    https://www.largescaleforums.com/threads/king-motor-baja-30-5cc-ksrc-001-rtr.21591/

    Post #4 of the link provided.

    ** If I were you open a claim with PayPal, this way he can see its not only one or two, but many kits are coming with defective throttle servos. Of course its win win for the company. Its legally stealing, sell a product, RC goes berserk against a wall or a lake/river like in your case, and one ends up spending 100 dollar more in parts.

    Rovan King Motor did not provide a discounted price, nothing, give me that credit card once again. Not everyone goes to the forums to read and then purchase. One of the reasons I opened the thread is to make other people aware of this problem, and maybe Rovan is monitoring this site and take action, or accept complaints are legitimate. I did have a Kill switch but it happened way too quickly, as the wall was way too close. It hit the side of the wall, and flipped losing one of the dog bones, so it stayed revved up for a brief period of time in the grass, else would have gone toward a tree line. Which may explain the premature failure of the top end, not even broken in and revved to the moon during the runaway. I recommend to buy a roller and build it from the ground up.

    For throttle, any Hitec, Traxxas (are very good as well). Once you have it, believe it or not, it does work, get clear nail polish, and cover the servo board, apply a thin coating along the edges of the servo lid, and cable run into the servo, apply on the outside where parts are together and bolts before screwing them in. Remove the top of the servo cover, put thick grease around the gear neck.
    I have sprayed with water the Baja after a day of mud dirt bashing, and no water intrusion into the servo.

    For steering on a budget,

    http://www.rovanrc.com/lt-4wd-truck/lt-slt-rs-2050d-50kg-digital-steering-servo/ RS-2050D
    Its a beast of a servo for the price. Its solid metal, also did the same thing of the nail polish to all internals and edges. I bought the bottle at Dollar Tree, find the one with thinnest viscosity, so to apply a heavy amount between the electronic components (the more layers and letting it dry, the better)

    IMG_20170129_194510.jpg
     
    #8 crankestein, Mar 28, 2017
    Last edited: Mar 28, 2017