Titan E325 - Can't get rid of that dam tail wag

[usherwdp]

Hi,

Thanks to the help I've received from this forum my e325 had its first hover over the weekend.

During the hover I noticed that the tail moves from side to side during the hover with the nose stays out to the right a bit. I haven’t played with the trims yet so the nose position could be that I guess?

I've tried moving the gain through 65-0. When the gain is about 15 the gyro really seems to gives up and the tail becomes uncontrollable.

Although its not the same Gyro I followed the Bob Finless videos for setting up a gyro.

I've checked the tail gear and initially it did bind a bit, but I’ve rebuilt and it seems a lot better.

The red HH light on the gyro is coming on, so I’ve selected HH mode on the transmitter.

I've reset the gyro by following the gyro instructions.

Any thoughts?

Futaba FF7
Saturn digital tail servo S620
Airtrix A500-G Heading lock Gyro


Cheers,

Peter

[comeflywithme]

I have an Airtrix A500 Gyro on a Twister 3D and found it to be fairly poor. It makes a flip turn into more of an unintentional Piro-Flip :? It alright for what it is but if you want to do 3D or fly in windy conditions a GY401 is much better. I also found the GY401 to hold the tail much better in hovering.

On the Mini-Titan, I found greasing the tail shaft reduces the tail wag significantly - even on a standard mini servo.

Are you sure you are using enough gain?. I'm not sure about FF7's but on my Tx the Gain range 50-100 is equivalent to 0-100% HH. Therefor when it says 65% on my transmitter, it actually means 30% HH gain. Might be different on your TX though.

[EricW]

I was building the kit this weekend and noticed that the tail assembly needs to be lubricated, so this could be a cause imo.
Tried to adjust the play on all the joints but it was still binding a little in the ends of the travel, and sometimes in random spots.
Got a synthetic lubricant by Robbe specially made for Plastic/steel moving parts.
Now it's as silk.
Still have to see how it hovers though, maybe next weekend :)
Eric

[murp]

I had a similiar problem with the tail pitch slider binding in random spots - added some grease and problem solved. I should really have been greasing the tail and main shafts as part of my regular maintenance before I fly :oops: