I was using a 6XAS prior to the 9C. On the 6XAS, once I got the trims adjusted, I could "lock them in" and then recenter my trim tabs.

Is there some similar way to do that with the 9C that I just bought? I have flown several of my planes and have had to adjust the trim settings. I would like to lock them in and then recenter my electronic trims.

Thanks,

Terry Brown

Terry,

That's what the sub-trim function is for. It allows you to displace the centering of your servo independently of the trim button's postion. If you have a large amount of trim needed, though, make the change mechanically in the linkage. A large amount of sub-trim deflection will affect the amount of servo travel you have.

Thanks Bill,

As always great information. I will use the subtrims.

Terry

Bax,

I have checked my settings on the 9C and find that to get my Tiger 2 to fly straight I need 32 units of right aileron trim...a little warp in the wing.

If I go into the subtrim menu and add 32 units to aileron sub-trim then reset the trim (not sub trim) to zero, will that do what I want it to do?

Thanks,

Terry

Yes that will work, but depending on how long the throws are on your ailerons, it would probably be better to adjust the linkages to get closer to 0 instead of using the subtrims. This way the servo won't be sckewed in one direction (60/40 etc).

It's always a good idea to get as close to "trimmed" as possible with the mechanical linkages before you start messing with trims.

Terry,

Coomarlin is correct. You want to use the linkages to set the desired position first. The subtrims are really only meant to make fine changes. A large displacement, more than 10 points or so), should be done with the linkages first.

In your case, see how much deflection you need, center all of the trims, and adjust the links on your pushrods to get as close as possible. The next time you fly, you should only need a point or two of trim. THEN you can use the subtrims.