3GX Tail Drift....

[tourerjim]

This week I'm going try to get to the route of the tail drift so just need to know what heli that's effected, if your using sub trim possition of 3GX.

I have tail drift on my 450v2 but not on my 500 elf both use sub trim so I think it rulls that out but I now know 3GX stores sub trim in its memory so if you setup your heli with sub trim this can be set back to tx default once you've gone through 3GX v2 DIR mode so what im thying to work if i try the above will i still have tail drift i also know that you cannot use sub trim outside DIR mode 3gx doesn't like this so i've few other ideas of correcting tail drift which weather permitting will have an answer sometime this week will keep you all post.

[coolice]

Hey buddy.

Have you used any sub trim on the tail servo? For me the tail rotor is the easiest control to setup without any, as you can in most cases use a servo wheel which allows multiple control ball positions.
If you are using some to level the servo arm, remove it and try a wheel.

However with the above said, tail gyros do work a little differently to the FBL side and actually learn their neutral position on power up. Hence why you must initialize in heading hold mode and not move the helicopter or control sticks.

Tail drift can be caused by many things as you know;

1. Vibration is a problem, on electric heli's its less of a problem but can still be present and give issues.
2. Tail rotor slop, stickyness etc in the control movement.
3. A poorly govenor, kicking the tail rotor with power fluctuations.
4. A slipping auto hub.

Where is your 3GX mounted on the model? Also what radio are you using?
.

[Made2Fade]

My first port of call would be to look at mounting... ie what sticky pads you are using/whether you have it strapped down/location etc etc Next id look at slop in the tail (usually quite a bit on a 450 sev2 mind). Make sure the control rod is silky smooth. Apart from that mechanically there is little left. Only other problem could be electronic... ie bad tail servo, ESC effecting it (governor) etc
Ian has pretty much summed it up tbh.

[AlastairC]

Was having problems with the tail drifting on mine (as well as the backwards drift problem). For the tail I found I had slight binding with the control links on the tail. This got worse under load (rotate the tail blade and stop main from rotating.. then move slider)

I put this in:
KDE Direct Performance Tail Upgrade New V2 Version AT450/450P-PTU
and the tail has much less drift (can leave it alone for 20-30 secs in a hover..not as good as my quark but not bad)

[tourerjim]

Hey buddy.

Have you used any sub trim on the tail servo? For me the tail rotor is the easiest control to setup without any, as you can in most cases use a servo wheel which allows multiple control ball positions.
If you are using some to level the servo arm, remove it and try a wheel.

However with the above said, tail gyros do work a little differently to the FBL side and actually learn their neutral position on power up. Hence why you must initialize in heading hold mode and not move the helicopter or control sticks.

Tail drift can be caused by many things as you know;

1. Vibration is a problem, on electric heli's its less of a problem but can still be present and give issues.
2. Tail rotor slop, stickyness etc in the control movement.
3. A poorly govenor, kicking the tail rotor with power fluctuations.
4. A slipping auto hub.

Where is your 3GX mounted on the model? Also what radio are you using?
.

I should have said backward drift, no probs with tail