What's the difference - inner hole or outer - tail control arm

[thefrog]

Recently I've been battling with tail authority against torque and one of the things I looked at was using the outer hole on the CF tail control arm (KSM40-T09).

I seem to have resolved the source of the tail issue but I never quite figured out why the tail control arm has two holes as it didn't seem to alter the resolution at all.

Anyone know?

[Mercuriell]

In theory the outer hole should give a bit more resolution, less tail movement for the same degree of servo movement. In practice I agree it doesnt see to make much difference. The outer lines up a bit better so i tend to use that

[thefrog]

Originally Posted by Mercuriell

...less tail movement for the same degree of servo movement. ...

Not more tail movement?

[scotte]

As Gav explained it to me , gives the gyro / servo more resolution & smoother tail reponse. Also lines up better as John has said - making it smoother . Only used the outer hole so carnt comment sorry

[Mercuriell]

Originally Posted by thefrog

Not more tail movement?

Being the outer hole it has a greater circumference to travel on an arc for the same degree of movement as the inner hole on a lesser radius ie less angle moved for the same distance moved. Less angle moved = less tail movement. (Unless I've totally lost the plot !!!!)

[thefrog]

Nope, you haven't lost the plot - I just failed geometry for a few days.