Brain - Tail servo creeping to the left. Please help

Hi all - I was going through the setup in the Brain basic wizard setting up the tail and have followed the instructions and set the servo throws. However, when the rudder stick is in the centre position and the gyro is in HH mode, the servo creeps really slowly about half way between centre and full throw to the left (nose left) from the servo's centre position. This also happens after I have first turned the Brain on too.

I would be really grateful for a bit of help on this one as I've been scratching my head for a while now. If you need more info just ask.

Many thanks
Dave

[Raving Jim]

No trim in the radio, check transmitter screen is at 0 for centre stick an endpoints are hitting 100 either way , also gyro is compensating in the correct direction.

[dbull46]

Hello Jim - I have the trims centred. In the monitor screen the rudder value is at zero at center stick and the end points are 100 in each direction in the transmitter tab brain wizard.
I'm using a Dx9 and just had a thought, the end points in the travel adj screen are at 100 but could go up to 150.

Thanks
Dave

[Raving Jim]

You only need to adjusts endpoints in tranny to get brain to read 100 in the menu , I'd try rearming the unit and see if it behaves .

[dbull46]

Tried re-arming, no change.
I've got a Ds655 fitted on the heli and I have just tried a spare Ds615 and that is also creeping but only in HH mode.
I did notice that there is very little servo throw from full stick left to right in rate mode if this helps.

Dave

[Raving Jim]

I only use hh mode with the brain , I take it you have set gyro gain so the software reads 45 for a base setting , also if you alter in the tranny it's is moving in the software screen .

[dbull46]

One other question.
When first powering up the Brain, after a short time the cyclic and pitch servo's initialise. At this point, should the tail do the same thing because it's not.

[dbull46]

I take it you have set gyro gain so the software reads 45 for a base setting , also if you alter in the tranny it's is moving in the software screen .

Yes and Yes

[Raving Jim]

No the tail will do nothing, I'd try spooling the model an see if your tail sits in the same place .

[dbull46]

Ok I'll give it try tomorrow and see how she goes.

Thanks Jim

Dave

[Mike Sanders]

I had the same happen when I was setting up a 3gx. The advice I received was that it would be all right once it got into the air. I didn't get a chance to test it because the 3gx stopped working. It has now been repaired or replaced f.o.c. by Robbe. I will be trying it again soon.

[dbull46]

Hopefully it will be aright once it is up in the air, we'll see as soon as the weather calms down a bit.

I'm going to spool up without main blades tomorrow and see what Happens.
Hope your 3gx will be ok.
Fingers crossed.

[crash-test-tomo]

I had the same thing happen with a beastx and savox tail servo. I went to my local shop where the guy messed with my tx (dx8) for all of about 3 seconds and the problem disappeared... He said he had no idea what he had changed but it hasnt done it since! Sorry that doesnt really help other than to maybe look more at your transmitter settings

[dbull46]

Sounds like I need a touch of the dark arts magic to work on mine. I will have another look through all the settings and see if anything stands out.
Cheers
Dave

[dbull46]

I was wondering if anyone has got some dx9 settings for the Brain setup please. Just want to compare.
I've just gone through transmitter settings including channel assign etc. I've currently got switch "D" to the gyro to change from rate to HH. Also noticed in the brain gyro setting, HH mode activates at a value as low as 6. But it is set to 45 now.

Cheers
Dave