Saturday, 27 August 2016

Hexacopter MK3 - Updates

After some more test flights and some more crashes I have made some additional changes to the 3d printed parts. https://www.thingiverse.com/thing:2895964

Primarily two items:
  1.  Beefed up the Hub slightly to allow for less flex
  2. Added location rods to the end motor mounts to ensure positive lock. I had super glued the motor mounts to the arms however with the vibration they could come loose and cause havoc to the copters flying characteristics :(.

Hub Changes:

Old/New (Orange)
Running FEM analysis suggested a 20% increase in strength just by increasing the filet radius.


Motor mount changes:

Location pin through top of arm securely locks the motor mount in place.

Some pics...

 

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