@Bigbloke:
Funny that you should ask...I have just worked this out in the last few days!!!
The boat is an A Class with two separate Hitec HS785HB drum winches, one for jib and one for main. I have been sailing the boat for some time with a "Y" cable controlling both winches on one channel and it has worked great.
However, it occurred to me that it would be great to be able to adjust the slot between the sails while sailing by tweaking the jib in or out a bit relative to the mainsail - I seemed to be forever adjusting this and it has quite a bit of effect on performance upwind.
The end result I have is both sail winches operating together on the left stick up/down (non centring). The slot adjustment is left stick left/right (centring) - it works great, all sail control on one stick. I have rudder on right stick. This setup is my preference, if you have a Mode 1 then it is just the same but the sticks are reversed (right stick is non centring on mode 1)
I am using a Turnigy T9X mode 2 with the later software (unit is recently purchased from HobbyKing).
The key to set this up is "ELEVON" mode. Elevon mode apparently only works on channel 1 and 2 so I am told, I have not confirmed this but is seems likely as there is no chance to choose what channels Elevon applies to. Apparently Elevon is commonly used with delta wings where the one control surface is both elevator and aileron.
The details:
Connect jib winch to channel 1
Connect mainsail winch to channel 2
Select a new model memory.
Select ACRO mode.
Set up the sticks so your non centring stick is channel 1 and 2 (Mode 3 for me)
You may need to reverse one or both channels depending on your personal winch setup.
Get into Elevon menu and ACTivate it
AIL1 015 015 (use the stick left/right to select the second number)
AIL 2 000 000
ELE1 100
ELE2 100
So now the controls are:
Left stick down hauls sails in - left stick up sail out (elevator)
Left stick left - reduces slot. Left stick right - increases slot (aileron)
That's all there is to it... you will probably need to adjust the values according to your travel and the amount of slot change you want.
I like it..