Tailfin

Doh! Can’t believe I forgot to mention this in my last post but on my 550 I have the same vibration in the tail fin that a lot of people have been having (see here) so I have changed my 550 tail fin with one from the T-Rex 600.

550 tail with 600 fin

550 tail with 600 fin

I also changed the tail supports to the 600 ones as they are stiffer, though you do have to take the horizontal fine off or the tail blades will clip it.

600 tail supports on 550E

600 tail supports on 550E

The current theory is that the 550 fin is quite thin and is resonating to the natural frequency of the heli. As the 600 fine is thicker it should resonate to a different frequency.

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