Aileron differential with elevons ? Trim shift ?

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DonaldNZ
Posts: 14
Joined: Tue Sep 27, 2016 11:29 am
Country: New Zealand

Aileron differential with elevons ? Trim shift ?

Post by DonaldNZ » Wed Oct 05, 2016 9:47 pm

Turnigy TGY 9x

SUN : er9x-r762
VERS: V1. 5655-erez
DATE: 14.05.2012
TIME: 20:50:26

continuation of elevons with knob to adjust servo travel ? SORTED
viewtopic.php?f=102&t=9241&p=119402#p119402

Flown the glider a few times, going close to ok. The trim shifts with any adjustment of P3.
Got any ideas how to eliminate this trim shift ?

Got any ideas how to set up aileron differential
on this Elevon set up ? so more up aileron than down start at say 60 / 40 ?


CH1
+25 ELE
+35 AIL
*100 CH8
CH2
-25 ELE
+35 AIL
*100 CH8
CH8
+35 P3 100 Offset
+30 FULL

Kind regards
Donald

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MikeB
9x Developer
Posts: 15565
Joined: Tue Dec 27, 2011 1:24 pm
Country: -
Location: Poole, Dorset, UK

Re: Aileron differential with elevons ? Trim shift ?

Post by MikeB » Wed Oct 05, 2016 10:54 pm

More recent revisions include differential in the mix options. With the revision you are running, you need to apply a curve to the aileron mix. Try a 5 point curve with points at -80 -40 0, 50, 100. That will reduce the movement on one side to 80%.

The trim changes are a bit more difficult. When you use a weight less than 100%, or combine a multiply mix, then the amount of trim is also changed.

You can pick out the trim value by using another channel:
CH9: +100% Aileron
-100% Aileron (No Trim)
This will give you channel 9 with 100% of the trim. You may want less than this, your current mixes for the aileron give you just 35% of the trim. If that is what you want, change to +100% to +35% and the -100% to -35% on channel 9.
Now on your existing mixes, remove the trim from the AIL entries, and add +100% CH9 at the end (after the *100 CH8).
Repeat using channel 10 for the ELE trim, and add +100% CH10 to CH1 and -100% CH10 to CH2.

Mike.
ersky9x/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

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