So today I took my new baby out into the backyard for a quick activation test - I 'm not even go...

[G+_Donald Burr]

So today I took my new baby out into the backyard for a quick activation test - I'm not even going to call it a maiden flight, since all I wanted to do was see if the thing could get off the ground.  And it did indeed lift off.  And stayed aloft.  For a grand total of about 30 seconds.  Then one of my propellers flew off.  Oops.  Fortunately, the prop flew off in the opposite direction to where I was (I was wearing safety goggles anyway so if it did happen to hit me, it wouldn't have damaged much other than my pride) and the quad didn't fall very far, and I was testing on grass, so there was no damage to myself, my quad or any other life forms or inanimate objects nearby.  This puzzled me as I used lock-tite to make sure the prop nuts (whatever those things are called) stayed on.  Anyway after doing some Googling I ran into this video.  Sure fit my experiences to a T.  My props even showed signs of erosion from contact with lock-tite.  Anyway I took a look at our local hardware store and was able to find the lock nuts and washers he recommended, and they cost me all of $4.22.  (And that includes about 8 extra sets of lock nuts and washers, "just in case.")  Everything fit together nicely and so far my props have stayed right on the shafts where they belong.  (admittedly I didn't have much time to test since by the time I got back from the hardware store it was pretty late in the day and the daylight had almost gone.)

[G+_Wayne Black]

I'm I missing something? Don't most props of this type (not the self tightening threaded type like on the Walkera Scout) use a bullet nut with a small locking set screw? This somehow doesn't look right with two motors spinning in the "unscrew" direction. Are the props pinned to the motor shaft?