In this section we will walk through the setup of a DLG. See also youtube for Taranis and Horus.

It is assumed that you have installed the servos with the center trim corresponding to center flaperon TRAVEL. This means that your flaperons will point down when the servos are in their neutral position, and that the lower flap position (full brakes) will correspond to one endpoint of the servo's, and the upper aileron position will correspond to the other endpoint of the servos.

The easiest way to achieve this is to use a servo tester with center, min and max outputs during build, but you can also use the transmitter if you know how to set it up for that purpose.

We will use the modelSim (thanks Miami Mike on RCgroups) to show and illustrate the process, and we will use the helpfiles and menu's to walk you through step by step.

So let's Go!

Let's start with the servoOrder.

After having used the 'restore' function in the model selection screen (Taranis type) to create a new model, or the 'copy model' function in the model selection screen (Horus type), we can start checking and adjusting the servo order using the custom GUI. In order to start the AppMan to access the model setup screens, you can long press 'menu' or 'system' to get into the radio setup. Then, press 'page down' until you are on the SDcard browser page. Now scroll down and select the AppMan.lua and long press 'enter' to select 'execute". The screens shown here are from the Horus type radios, and contain exactly the same entries as on the Taranis type radios:

Scroll to the servoOrder menu item.

With long press 'Enter', you call the 'help' screen on this menu item:

Scroll down to see the rest of the content:

Click 'enter' to go to the servoOrder page:

Now, by clicking one time on 'enter', the 'FLapeL', left flaperon output, will start to blink. With 'plus' and 'minus' (Taranis) or 'left and 'right' on the scrollwheel (Horus), you can shift this output around.

When done, click on 'Menu' once, and you get back to the previous page.

Of course you can also switch the cables to get the same result. We thought this was easier.



Ok, once the outputs are set up in the proper order, we can start adjusting the physical imperfections of our install.

Pull the SC switch completely towards you. A fast beeping sound will start to repeat, indicating you entered 'trim' mode. Also, pull the 'Multi' switch 'SH' towards you. It will activate the 'servo neutral' mode. Your perfectly build plane should look like this now:

Pay attention to the notification of TRIM on the transmitter.

When pulling down the throttle, we activate the fullflap deployment WITH INVERSED FLAP TRAVEL (because the 'Multi' switch is still pulled), showing the maximum upper position of the flaperons.

If neccesary, inverse the servo direction in the trim settings.


When returning the 'Multi' switch 'SH' to the upper position, leaving the trhottle stick in the full flaps position, the flap travel inversion is cancelled, and we get the lower flaperon position:

My builds are not that perfect from scratch, and look more like this on initial power up:

Now, use the trim page to change first change the CENTER trim positions, for the flaperons in their CENTER TRAVEL position. Preferably by using the 'ppmCenter' setting:

After setting the 'ppmCenter' right for all servos, you can adjsut the endpoints in a similar way.

When returning the trim switch 'SC' back to the upper position, we enter the flightmode 'Cruise'. Your Flaperons will probably be a little off on the intended position for Cruise, so your plane will look somewhat like this (Zoom 10 x to make it more clear) 

In order to correct that, we go to the flaperon settings.

In the main menu, go to the 'BasicsPlus' menu item, and long press 'enter' to get the 'help' page:


And scroll one down to 'Flaperon' and long press 'enter':

Now click on Go! and adjust the flaperonOffset:

The flaperon offset will correct the servo center position to have the ailerons in the neutral position for the flightmode 'Cruise'.

Now the basic setup is finished for the wing part, and we anly need to set the camber and elevator preferences for the different flight modes.

Ok, now that the ailerons are set up properly, we can adjust the presets for the different flight modes. 

Make sure all switches are in the up position, and the put the 'SA' switch in the middle position. This will select the 'speed' mode, used for returning from a downwind thermal chase. The plane should look like this (10 X zoom to make it more visible):

As you can see, there is a negative camber (reflex) of 2.4 mm, and an elevator preset of 0.9 mm. These are just example values, and in no way meant to fly with without checking!

Now, in the menu, go to the 'camber' menu item, and long press 'enter' to get into the 'help' screen:


As you can see, there is the 2.5 mm reflex and the elevator preset of 0.89 mm. Adjust them to your liking.

Then, return the 'SA' switch to the upper position, and you will see the neutral setup for the cruise mode:

Whe selecting the 'Thermal' mode, some positive camber will be applied:

Your plane would look like this:

The small differences in the surface deflections are due to rounding errors.

Ok, nearly there. Basic flight modes are set up!

The Launch mode is activated by pulling the 'SF' switch. In launch mode, we have disabled the flap stick, by setting the flap throw to zero. You can check that in the 'wing' menu item:

long press 'enter' to get into the 'help' menu:


As you can see, you can change the aileronThrow and the flapThrow for any flightmode. 

For Launch, the flapThrow is set to zero. When activating the launch mode, the camber settings will be something like these, with some up elevator to get the plane in an upward turn:

The plane should look somewhat like this:

When releasing the 'SF' switch, the 'fast' mode gets activated. In the Fast mode, the flaps are still disabled. However, the elevator preset should be much less, and there would be some reflex, to have the plane go straight up:

In the camber settings it would look like this:

To return to the normal flight modes from the fast mode, you NEED to put the flaps stick to zero flap position, and then move the elevator stick forward to 'push' the plane over. 

Flaps will be activated again in any normal flight mode.


In order to make a quick turnaround, just keep the launch switch pulled from the moment you catch the plane, until just after the moment you release the plane. Pulling theluanch switch will disable the flaps, and during the rise of the plane in the fast mode, you have all the time to return the flaps stick, and to select a flight mode that will be active after you push the elevator over :).

You can easily adjust the camber presets during flight, without using the menus. By putting the trim switch in the middle position, the throttle trim will adjust the camber preset, and the elevator trim, will adjust the elevator preset. Off course, this will act on the currenty selected flightmode only. So don' forget to KEEP the launch switch pulled when adjusting launch presets! A beep will sound to notify the trim switch is not in the inactive position.

Without the trim switch in the middle position, the normal trim settings are active. These are defaulted to follow those of flightmode 0, and changing the trim will affect ALL flightmodes. If neccesary, you can off course change this setting in OpenTX to have a different trim setting per flightmode. This is probalbly only usefull for small aileron and rudder trims for the launch mode. On some planes these need to be trimmed to launch straight.

Have Fun and Just Fly!