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wiper motor selection and Pot mounting?

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by supraman, Jun 12, 2015.

  1. supraman

    supraman Member

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    So I am finally taking the plunge on building a game rig, one of the first things I wish to address is the wiper motors I will be using and the best way to mount the Pots. I am looking at buying two brand new motors from work as I am a parts guy but I want to know what are the best bang for buck wiper motors, and also the best way to go about mounting the pots.

    it would help me alot to see a step by step kind of thing, I had looked at the one in the tutorial section about wiper motors but he didnt really expain that part the best imo..

    any help would be appreciated, any pictures will be browny points haha

    thanks guys and gals!
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  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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  3. supraman

    supraman Member

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    @noorbeast This is the set up style I am interested in on mounting the pots, it seems like with this set up it will allow me to have a full 360 degree rotation if needed. I dont however understand what he did to the case to be able to put it there? none of the wiper motors I am fining have an opening like that on the back side.

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  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Honestly a flexible coupling is a simple way to connect and protect a po and they come in all different sizes to fit almost any shaft: http://www.xsimulator.net/community/attachments/pit-jpg.14097/

    I am not sure what you mean by "have a full 360 degree rotation if needed". A hall sensor wont break if over rotated, if that is what you mean. How you mount it is just a bracket and it depends what you are attaching that bracket to.
  5. supraman

    supraman Member

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    @noorbeast hmmm how can I explean what I mean haha, ok in this first picture you can see the shaft where your rod would be attached to and on the opposite side you can see where they mounted the POT. Now in this second picture you can see that on the reverse side of a typical wiper motor it does not have an opening to the shaft, so how do you mount to POT there?
    image 1
    [​IMG]


    image 2
    [​IMG]

    I hope this makes more sense and you can see what im trying to say..
  6. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    There are a number of options then, though keep in mind the lever should not rotate 360 degrees in the first place unless something is seriously wrong.

    You could use gears to offset the pot and that is a good option if using a traditional pot, as it will add precision. Or you could make the bracket big enough that it clears whatever length lever you plan on using.

    My advice is to study all the available information and follow it, check everything carefully and be conservative with initial testing. That way a 360 rotating lever should be a non issue.
  7. supraman

    supraman Member

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    wait I think I am just over complicating this in my head... Please correct me if I am wrong @noorbeast , the POT does it just monitor the angle of the shaft coming out of the wiper motor? if so then all I would need to do is flip that bracket around and set my motor in a way that I get the desired angle for my POT and then mount it correct?

    sorry this all very new to me but I am very eager to learn.
  8. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Yes that is correct, and there is nothing wrong with asking questions. There is a lot to get your head around but also a good deal of existing documentation, FAQs and existing member builds to use as resources.

    Keep in mind we tend to use the term pot loosely here to refer to both traditional potentiometers and hall sensors. Like many others I use hall sensors as they are simple to direct mount, are very accurate without gearing and won't break if over rotated.
  9. supraman

    supraman Member

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    @noorbeast

    how would one go about mounting a hall sensor? or even If you could point me to a thread that would be great.
  10. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    A hall sensor looks like a normal pot and is mounted the same way, on a bracket attached to the motor, preferably with a flexible coupling to the motor shaft. That is a hall sensor in the picture of my 60:1 setup you posted earlier: http://www.xsimulator.net/community/threads/wiper-motor-selection-and-pot-mounting.6985/#post-80207

    This is how I mounted the same hall sensors on 25:1 gearboxes, which conveniently had 2 spare holes at the back of the gearbox to which I bolted the simple aluminum brackets: http://www.xsimulator.net/community/threads/dx-racer-compact-simulator.5866/page-5#post-65728

    I used 25x2mm thick aluminum for making the brackets, they just need to position the pot not be super rigid.
  11. supraman

    supraman Member

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    does anybody have any part numbers of the wiper motors they have used? I am having a hard time finding some like the ones I have seen on here..
  12. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

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    This is another option , please excuse its not using SimTools , lol very old vid.



    Another old one using window winders from a car which failed very quickly but as demo units still run today.

    Lever option is an easy way of connecting the pot but has one bad issue if motor does get out of control and spin 360 deg it can break stuff.
    A emergency off switch to kill power is a must on any simulator for the "Oh No" situations.
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  13. supraman

    supraman Member

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    thanks for all the input guys it all really appreciated keep it coming :)
  14. bsft

    bsft

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    There is no particular model for wipers, unless you buy them off ebay or something.
    As I have many car wrecking yards fairly local to me, I rang around to ask for no particular model and cheap. Eventually I found a place that sells the odd ones out for $10 each.
    When it came to earth isolating them, a must, I didnt pull apart the case, but managed to figure out which wire outside did. If it didnt earth isolate, its was $10 wasted, but thats not too much. Out of 5 wiper motors purchased, I think 1 did isolate.
    Just look for 12v, maybe from large passenger car.
    Mind you , these days I use the larger 12 200 watt motors, that are isolated from factory, and a lot faster spinning.
    • Informative Informative x 1
  15. supraman

    supraman Member

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    yea I decided against going to wiper motors but thanks for all your help so far :) I have decided to go JRK @bsft
    • Winner Winner x 1