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Protecting the compass

Posted by Russell B. Sutton on April 19, 2011 at 8:30pm

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I used Black RTV Silicone to keep the compass from moving during hard landings and wrecks.  I also used 2 header plastics to make sure my compass isn't to close to the IMU.

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Comments

  • Developer
    Randy April 20, 2011 at 4:58pm
    I also doubled up the plastic header on my mounting.
  • Russell B. Sutton April 20, 2011 at 2:25pm

    Take a peace of wire bend it in half open it back up , now rinse and repeat.  Over time with out protection I could see these components becoming fatigued, especially with quads and heli's.   It's just a little CYA.  

  • ARHEXA April 20, 2011 at 1:45pm

    why ?

    why would it break on landing ?

     

    and the pins solder headers - do they also need to be flexible ?

     

    I see it valuable for avoiding the magneto approaching the IMU too much, and to keep it parallel to it,

    but i dont see too many sense in making it vibration isolated or so.....

  • Russell B. Sutton April 20, 2011 at 1:42pm
    I do see your point and agree, although I've never had a problem with it in the past.  Hot glue and Epoxy are to ridged,  something more shock absorbing is what I'm going for. 
  • Mikko Saarisalo April 20, 2011 at 3:29am

    Guys,

     

    For protecting Electronics, DO NOT USE normal SILICONs anywhere!  (Silicon may also contaminate your workshop and materials making painting and glueing a real challeng, but that is an other story.)  Silicon in electronics leads to fast corrosion as it yields acetic acid. Sikaflex or similar flexible construction adhesives are much better choice when flexibility is necessary. By default a blob of epoxy or hot glue is a good solution for mechanically securing the parts.

     

    -mikko

  • Russell B. Sutton April 20, 2011 at 1:24am
    LOL... No, I haven't even finished my quad yet.  I just noticed room for improve.  I read somewhere on here that somebody had soidered the compass to close to the IMU and it was messing with the readings of the compass,  That me the idea to double up the plastic header.   
  • ARHEXA April 20, 2011 at 12:55am

    cool.

    was it 'bending' or moving after a landing ?

    it was rather a crash, not a landing...

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