Hello Bax,

I'm trying to set up flaps by using the three-position switch "C" on my 9C (I'm not using flaperons).

I'm using channel 1 for right ail., channel 7 for left ail., channel 5 for left flap and channel 6 for right flap.

This particular aircraft requires a mid-flap position of 1 1/2 inches, and a full-flap position of 3 inches. By using the electronic trims, I was able to attain the neutral (full-up) postion and the full-down 3 inch position. It's that center (switch) position that's driving me nuts.

I just spent about 2 hours looking through the 9C manual with no results. I can find no way to set (or adjust) that center position to attain a 1 1/2 inch mid-flap setting. When I position the switch to the center, both flaps wind up at 2 3/4 inches down. I haven't got a clue why they drop to 2 3/4 inches.

I also skip through this Futaba thread from time-to-time and remembered you may have already answered this same question, but I'll be darned if I can find the post. From what I remember, you mentioned something about a primary mid-switch mechanical position ???

Most likely it's something small I'm overlooking. Can you help me out ?

Thanks,

Joe M.

What I think you might be looking for is an Offset mix.
I recreated your set up and then added two offset mixes with Offset as master in both, and Gear and Aux1 as slaves, I set this to around 20% with Switch C in the Center postion.


Sincerely,
Krysta
Product Development & Support Specialist
Futaba Service Center USA

Joe

If you want to use C as your flap. Select C for flap operation. Use your center switch for your take off flap. put your switch in the center and adjust the horn and linkage so that your center switch position has your flap in your take off position(1 1/2 inches). Then adjust your ATV for your flap up and flap down positions/limits.

Krysta,

Thank You very much for your time, but after some tinkering, I came up with a fairly simple fix for my flaps. What I was missing was you must first set Switch "C" to the center position and then mechanically set the center flap position. Once this mechanical (center) position is set, all of the other electrical flap adjustments are very easy.

This is what I did:

1. Turn on the radio and receiver.

2. Set switch "C" to the center position.

3. Position the servo arms on both flap servos to 90 degrees to the side of the servo case (either at a right or left angle).

4. Install the flap servos to the wings. At this time, DON'T move switch "C" to either the up or down position........leave it in the middle. Moving the switch now may cause too much servo arm throw which may cause possible linkage, flap or servo damage (I found this out the hard way).

5. Install all flap linkage and adjust it to where you want the "center" switch position to be. In my case it was 1 1/2 inches down-flap. Again, DON'T move switch "C" to either the up or down position........leave it in the middle.

6. Disconnect the linkage at one end (either at each flap or each servo).

7. Flip Switch "C" up. Using the "end-point" feature, reduce the amount of "up" throw on both servo arms about 75%. The reason I did this step was to prevent too much servo arm throw which may cause possible linkage, flap or servo damage.

8. Flip Switch "C" down. Using the "end-point" feature, reduce the amount of "down" throw on both servo arms about 75%. Again, the reason I did this step was to prevent too much servo arm throw which may cause possible linkage, flap or servo damage.

9. Reconnect the servo linkage (on each servo).

10. After reconnecting the linkage, flip switch "C" up and use the "end-point" function to electrically set the flap up position (neutral).

11. Flip switch "C" down and use the "end-point" function to electrically set the flap down position (in my case it was 3 inches).

If need be, you now can easily adjust the center flap position using the "sub-trim" function, or, the up and down position using the "end-point" function.

Thanks Again Anyway,
Joe M.