Is lower gain better?

[trillian]

I have just changed out the tail assembly on a 450 heli. With the same gyro and tail servo it now needs less gain to work properly. At the gain setting it had before it was now wagging and I reduced it considerably until the wagging stopped and it seems to be holding well so far with about 10% less gain than before.

So, does this mean the mechanical setup is more efficient, less efficient or not a measure of how well it works anyway?

Interestingly I changed the entire rotorhead first with the old tail (same main blades) and had to reduce a bit of gain just from that, then had to reduce it again when I changed the tail assembly.

[ddracer]

There are lots of reasons the gain will change, tail blade lengh, blade profile, headspeed etc. Usually the better the mechanical setup (Smooth moving, linear, servo speed) the more gain you can run. However longer servo arms and greater travel you have then the gain may need to go down.

I aways try to set up to run as much gain as possible, but if its holding all is well.