The SOUND of springs failing!

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Apr 10, 2016
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Sarnia ON Canada
Just landed from a couple of 25 and 28min flights down to 10% battery and for whatever reason I just gave one of the props a spin . . made a bumpy RATTLE sound. . spun the other three and they made a soft "whiiiiiizzz".

When I got home I did it again in a quiet room . . . very obviously something wrong but after a bit of fiddling I figured out it was the springs (one hub was slightly depressed and made the blades wobble). I gently bent them back up and reinstalled the blades . . nice smooth "whiiiiiizzz" . . .so those need to be replaced immediately . . I'd say . . . not worth the risk of in-flight failure.

See if your blades sound like this: https://dl.dropboxusercontent.com/u/68014770/Blade Sounds.m4a
That second sound is the sound of bent springs (failing by staying bent and not bouncing back))
 
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You can upload your M4A file to a website like dropbox.com.
 
You should be able to zip it and upload it here.
 

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