Bud Faulkner

My Feedback: (1)

I have the Futaba 8U super and would like to set up flaps on seperate channels using two servos as opposed to a Y connector so I can adjust the end points to match. I have Don Edbergs book but can't figure out how to do it if it's possible. I have set it up so far to have flaps on switch C rather than the knob and would like to use the same switch for two positions on the flaps and can't figure out if that's possible too. Has anyone using Futaba done this?


Bud

LesUyeda

I have not used two/channels - two/servos but I have done what you are speaking of in terms of switch C. AND if you add a "Go slow" into the mix, you can deploy slowly and prevent the usual "bloom".

Your answer, and much more, is here.

http://www.futaba-rc.com/faq/faq-8u.html

Les

DP01

My Feedback: (1)

Flaps (CH6) should be assigned to SW C Disabling the rotary knob, and will provide 3 positions. Up, Down stage 1 and Down Stage 2. By playing with the ATV for CH6 you can achieve the movement you desire. For example I have 34% for stage 1 and 100% for stage 2.

To add the second flap servo - say CH8 - open an unused P-Mix make CH6 the master and CH8 (in this example the slave). You may need to reverse the slave servo if the linkage is on the oposite side to CH6.

Dennis

Tsutomu Mabuchi

My Feedback: (1)

Is the radio you say FF8 or FF8 Super?
I think my FF8 does not have that function, so I purchased 9ZA TX recently.

DP01

My Feedback: (1)

Tsutomu:

This is the Super but the FF8 should be similar.

Try:

PMIX 2 OFS FLP +63 (Example only could be any value) LINK OFF, SW -C UP

PMIX 3 OFS FLP +51 (Example) LINK OFF,SW -C UP/C

ATV-FL (Ch 6) SW-C UP 34, SW-C C/DN 100

This should work…

Dennis

Tsutomu Mabuchi

My Feedback: (1)

Dennis,

Yes, I now found the way from Futaba's FAQ page.
When I called Futaba in Japan, a technician answered me there is no
way by FF8 for my flap operation by toggle SW instead of the knob.
So, I used AirBrake function to lower the flap, but that function does
not utilize 100% of the servo angle, only 50%.
I bought 9Z recently since he said only 9Z can do it by trim offset and
changing SW function.
I had been interested in the servo delay function of 9Z as of that, so
what he said was not the only reason for me to buy 9Z, but I would not
buy 9Z if I had known FF8 can do that work.
I now found my FF8 can lower the flap by any toggle SW.
Thank you so much for your input any way.
This teaches me to read the instruction more carefully, I want Futaba
to make instructions more kindly though.

Tsutomu Mabuchi

Tsutomu Mabuchi

My Feedback: (1)

Dennis,

Your way of setup is perfect.
My FF8 becomes capable to lower the flaps to mid and full position
by the toggle sw-C. Position1-full up, Position0-mid and Position2-
full down. And I use PMIX-1 for FLP-ELV mix.
Thanks again.

Tsutomu Mabuchi

DP01

My Feedback: (1)

Tsutomu:

Glad it worked for you - the instruction book does not cover every possibility!

Dennis

DP01

My Feedback: (1)

Tsutomu:

If you wish, it is still possible to use the AIRBRK feature on SW-C to mix elevator. This allows the use of the delay setting if that's of any benefit.

Dennis

Tsutomu Mabuchi

My Feedback: (1)

Thanks Dennis,

I switched to AIRBRK on SW-C rather than PMIX-1 to use servo delay mixing.
I didn't think FF8 had so many flexible software functions.

Tsutomu Mabuchi

Condor

Bud,

I have the exact same problem and the exact same radio, and was wondering if you ever did get it sorted out; the Futaba FAQ page was no help

Thank you,

Juan M. Villaveces