SERVO safety question

  1. #1
    Luis's Avatar
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    SERVO safety question

    If I leave the servo in the ON & UP position, or DOWN.. will I risk breaking it? The reason is I have a 3 way switch. If I leave it in the neutral position the servo gives out some slack and moves my RF.. So its no longer 90degrees..

    I hope I make some sense..

    Thanks!
    Luis

  2. #2
    Turtle's Avatar
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    Re: SERVO safety question

    In order not to burn a servo out you will need some type of end point adjustment. This can be done with a potentiometer adjusting the over all "throw" of the servo. If you are operating on a transmitter signal you can set up individual end points for both ends of the throw. There are a couple ways to do this, it just depends what you have so far.

  3. #3
    Luis's Avatar
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    Re: SERVO safety question

    My servo goes 180 degrees. I got it from salamanderking. How can I set it up to go just 90degrees?

  4. #4
    Turtle's Avatar
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    Re: SERVO safety question

    Luis said: View Post
    My servo goes 180 degrees. I got it from salamanderking. How can I set it up to go just 90degrees?
    There are two options get a potentiometer and trim the throw levels down. Or just swap the servo out to a different one. Chances are it was a pretty "inexpensive" servo you got anyway. You can hit up the local hobby store and get a metal gear standard sized servo for 20 or 30 dollars. The good thing about replacing the servo is it will be a 90 degree throw servo. A lot of servos throw 90 degrees the other servos are made for either robot projects, airplanes, RC sail boats, etc.
    Last edited by Turtle; Oct 11, 2011 at 1:00 AM.

  5. #5
    Luis's Avatar
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    Re: SERVO safety question

    Oohh.. would you know If tamiya makes the 90 degree metal gear servo's? Tamiya is the only shop I have thats close.. thanks a lot!!

  6. #6
    Turtle's Avatar
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    Re: SERVO safety question

    Tamiya is not really know for their electronics, they are more a model and RC kit company. Just to help you, where are you located?

    Also it does seem the standard size servo is a little tall, a low profile would be the more optimum choice. The one thing I am unclear on is the speed the servo needs to travel at. I imagine something that travels 60 degrees at .011 of a second is a bit fast. But something around 120 ounces of torque I imagine should work fine...?

    Anyone who has one of the existing kits know the ratings on the servo?
    Last edited by Turtle; Oct 11, 2011 at 1:02 AM.

  7. #7
    Luis's Avatar
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    Re: SERVO safety question

    Im from Sunnyvale CA. Thanks for the help.

    Is there a way to make it a 90degrees? Im a complete newbie in the servo world..

    This is the servo Im using right now from salamanderking. it says RC-2 servo, its also low profile

    http://www.thedentedhelmet.com/attac...447d1263381511

  8. #8
    Fettered's Avatar
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    Re: SERVO safety question

    I'd like to piggyback onto this if I might. I think my question fits the discussion.

    My concern is over the speed of the servo. The one used in the cool zip-zap tutorial seems nice, but in the video I think it is way too fast. My research indicates that in the absence of some computerization the servo speed cannot be properly slowed down (that is, simply adding resistance can have a negative effect on the servo as a whole--it does not simply slow it down). I have some electronics experience, but zero experience with servos and servo controlling.

    I'm not even certain what my question is yet. It depends on whether or not servo speed can be easily slowed. If so, how? If not, what should be sought out in servo specs?
    Thanks!

  9. #9
    Fettered's Avatar
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    Re: SERVO safety question

    Anyone with servo speed suggestions?

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