My Fury was making a clicking sound at spool down

[HeliDriver]

I was flying my Extreme the other day and noticed when I spooled the heli down it make a slight clicking noise. I only noticed it when on the ground at a medium RPM and then drop the throttle to idle would I hear the sound.

I spent the last few tank shooting autos. Afterwards I found a had one tooth missing on my main gear. I don't get how it happened. I was shooting autos before the sound started but I never had a hard landing and never flipped out of hold while at anything but idle.

I was kinda surprised the tooth got whacked. Not real sure when it happened and more surprised it didn't shread in flight after the first one let go.

I never had a hot start nor a hard landing with it... I wonder if it happened when I was landing in the grass when autoing, perhaps it kicked up a small stone that happened to land in the mesh?

[DavidH]

Raymond,
I have had the exact same thing happen a couple of times in the last few years. Just one tooth would be missing on the crown gear. Then I had a main gear that just one tooth would be missing. The surrounding teeth on both items would look like new. It is just one of those things that made me wonder how the hell that happened.

David