GT5.1 FBL violent Tail shake??

[Tripler]

As thead,
I have a "violent" tail shake,, not wag, on my x50 setup.
Have moved the P and I values as per manual but just can't settle it down,Anyone else had this problem with thair GT5.1

[KevDavies]

Has it always done it or just suddenly started?? Is the tail drive as it should be?? Ie no gears broke, belt frayed etc Also just check if the servo is centreing properly, put the tail in rate mode and check the tail centres on the same spot everytime. Ive had a worn pot on the servo do the same

[Tripler]

allways done it. no broken gears, t tube tail, and don't think you can put the gt5.1 in rate mode.
only does it when the engine is running,
but cant see why the servo arm shakes, even removed the fbl unit from the heli and it still did it which points to the unit to me.
or something drasticly wrong with the setup, checked the servo speed and frequency a (ds655) ok, Tail worked well when it was FB with a gy520 gyro.

[KevDavies]

sounds like the engine may be sending inductive electromagnetism through the electrics. Ive known it on some nitro engines tor produce a light electro magnetic charge when something is worn and bashing metal to metal. Dont think thatll be your issue tho.

How is the fbl unit mounted to the heli? and do you have a metal plate to absorb the vibrations, like some gyros use inbetween gyro pads to cancel the vibes

[ady]

Hello there , if you go into the GT5 and find the D-sense on tail , try turning that to zero and having another go chap

[Tripler]

Hello there , if you go into the GT5 and find the D-sense on tail , try turning that to zero and having another go chap

Hi,
I lowered it to 5 and its still the same, spent "another" good hour today fiddling with the bl**dy thing, there seems to be somuch vibration from the wires going into the unit,
if you hold the wires it seems to help, a little,,, put two thick gyro pads under it, I even wraped the wires in foam but still un'flyable,
Thinking its got to be the unit can't handel the vibes from the heli,