vertical tail fin stabiliser

[rob12770]

heres a small clip, sorry, its not very good , not sure if its wobbling or not, the tail section was a little squint, so i straightened it and tightened..how does it look wobble wise ?
sorry first time using me yi cam on my head.. not very close..
any large movements are me yawing ,, it was windy with many hazards..
i will film tomorrow in an open space and upload it,.. just thought id post this anyway

cheers Rob

[tomatwalden]

Not very easy to tell, but doesn't look that bad to me. What gain value have you got, and have you tried any others?

[rob12770]

Not very easy to tell, but doesn't look that bad to me. What gain value have you got, and have you tried any others?

im not going to lie mate.. im not sure what tail gain is, or where to find it..
is that in vstabi settings ?

[tomatwalden]

im not going to lie mate.. im not sure what tail gain is, or where to find it..
is that in vstabi settings ?

The tail gain sets how aggressively the gyro attempts to keep the tail in line! Too low a gain and the tail will feel loose. Too high a gain and you'll get high-speed wagging (hunting) of the tail.

It's set in the transmitter normally ... https://www.youtube.com/watch?v=BQZoTeE1KP4

[rob12770]

Thanks Tom, both rates say 50.0% is that ok ?

cheers.

[tomatwalden]

Thanks Tom, both rates say 50.0% is that ok ?

cheers.

Hmm. I don't think so. IIRC on a DX6i, 0 to 49% is rate mode, 50 to 100% is heading hold. So if I'm right, you've got an effective 0% gain of heading hold.

Try a value somewhere between 65 and 75%. Try 65% first and see if it flies OK. Keeping moving the gain up in 1 or 2% increments until you start getting fast wagging on the tail.

EDIT: I will add though that I'm not a vstabi / vbar user, so I reserve the right to be wrong on this one.

[rob12770]

thanks ,im guessing that when i start getting fast wagging on the tail, i back it off ?

[tomatwalden]

yup ...