Aurora 9 tail setup.

[daveman]

Hi,

I got a T-rex 550e for Christmas and because it is the first helicopter I have properly set up, as well as a first using the Aurora 9, I am having some problems. My tail control is set up in some way that if I move the rudder stick a touch in any direction the pitch slider will move to its limit and will not neutralize until I give various stick inputs to get the slider in the middle again. How much rudder input I give only determines how fast the slider moves. The tail control works fine in rate mode so I presume that it is something to do with the gyro? I know this is probably pretty hard to understand so I attempted to record a video. I take it this isn't normal so can any Aurora 9 owners please give me some help.

Thanks,
David.

[Steve]

Your gyro is in heading hold mode. This is normal behaviour.

Think about it - if you apply a tiny bit of rudder stick when the heli is sitting on the table, the tail slider will start to move, but the heli isn't turning, so it will move a bit more, but it still isn't turning (it's sat on the table remember), so the slider will keep on moving until it hits the stops. In heading holds mode, the gyro works on a rotational rate, so it tries to rotate the heli at a rate determined by the amount of rudder stick input - the more you push the stick, the faster it rotates.

In 'normal' or 'rate' mode, the tail servo will centralise with the rudder stick, and will follow the stick which ever way you push it, including letting go and the stick goes back to middle. In 'rate' mode, the gyro acts as a large damper rather than trying to maintain rotational velocity, so it just dampens out unwanted rotational movements.

[daveman]

Wow, thanks very much, that clarifies things a lot. Rc choppers is still a learning curve for me and it is people like you who make it much easier.

Thanks again,
David.