X 400 / Zoom gyro tail wag

[equisol]

Following spool up, the tail of the heli starts to wag, I can keep it hovering at 3 feet, but the wag does not stop. Reduced the gyro gain to 20% and still no change.
Can anyone help?

Thanks

[istandalone]

check your belt tension.

[equisol]

Istandalon;

checked it and it is as per manual, and as recommended by X400 tuning.

[adam crosby]

try moving the tail servo onto the tail boom! this shortens the push rod and makes it stiffer. you need to buy a servo boom connector
adam

[equisol]

Adam;

thanks for the tip, will go to the LHS and give it a try.

Thanks

[Scottlclem]

Low head speed will cause it to wag also , it will slowy occelate back and forth if it's head speed.

[Raven_darkcloud]

I found stiffer blades help. use the trex se batwing style blades. Plus you can beat the snot out of them.

[equisol]

Raven;

could you provide me with more details on the batwing style bldes;

Thanks in advance

[equisol]

The tail slider was bent just a bit. Could not see it when turning the tail slowly, but discovered while testing if the main shaft had a bend, there was a slight wobble on the tail blades. Changed the shaft and rock solid now.

Having seen the amount of issues others have with tail wag Trex users as well), I think I will create a thread to list all the possible problems.

[Raven_darkcloud]

Sorry for missing the question. The black tail blades for the trex 450se that curve kinda like a raptors claw. http://www.grandrc.com/inc/sdetail/31127