The DX8 is designed to support airplanes and helicopters with sophisticated programming functions and features. Several pilots have requested programming information for full functioning sailplanes and while the DX8 does not have sailplane specific programming, by utilizing the eight available programmable mixes in Airplane mode, the DX8 can be programmed to accommodate most sailplane functions. A sailplane base-line program is now available that can be transferred to your DX8’s model memory using an SD card that provides base programming for a 6-channel sailplane with 4-servo wing offering the following functions:
Important- The provided setting on the SD card are the actual setup parameters (reversing directions, travel values, etc.) for a specific model. These setting are provided as a baseline setup only allowing you to build a setup to meet your specific model’s needs. The values and reverse settings for your model will differ and must be carefully adjusted and tested before flying.
Note: It’s recommended that this model program be stored as model #30 in your DX8 and then copied to the intended model that you wish to use. This will allow recopy to other models and have reference to the base model program if/ when needed even at the field.
Preparing Your DX8 transmitter
Before getting started it’s important to identify the switches and sticks that are used and how they function:
Basic Setup Procedures
Preparing Your Sailplane
Step #1- Install the servos leads in the receiver
A 7-channel or greater receiver is needed. Plug the servo leads into the following ports in the receiver:
Step #2- Bind the receiver
Step #3 Servo reversing- Adjust all channels servo reversing to the correct direction
Step #4- In flap system with the flight mode switch in the middle position (1) cruise adjust the mid flap value to neutralize the flaps.
Step #5- Adjust sub trim on all channels
Step #6- In flap system adjust all three preset flap settings (reflex, cruise and launch)
Step #7- Use the following mixes to adjust the remaining mix functions:
ELE > FLP- active in Cruise and Reflex mode adjust values and directions of Elevator to flap mix in this screen. Use negative values to change directions of mix.
AIL > RUD- active in Cruise and Reflex mode, Adjust values and directions of Elevator to flap mix in this screen. Use negative values to change directions of mix.
Mix 1 THR> RFL- active in Cruise and Reflex mode, This mix is used to adjust the flap travel amount and direction when Crow/ butterfly is activated. Note the offset of 90% programs stick to be at neutral at near full up position.
Mix 2 THR> LAL- active in Cruise and Reflex mode, This mix is used to adjust the ailerons travel amount and direction (usually up) when Crow/ butterfly is activated. Note the offset of 90% programs stick to be at neutral at near full up position.
Mix 3 AIL> LFL- active in Cruise and Reflex mode, This mix is used to adjust the ailerons to flap mix for full trailing edge ailerons. Travel amount and direction is adjusted here.
Mix 4 KNB> RFL- active in Cruise mode only, adjusts the flap camber when the knob is rotated in cruises mode only. Note the offset of 90% so the value is adjusted in one direction normally to add camber for thermal mode.
Mix 5 THR> ELE- active in Cruise and Reflex mode, provides elevator compensation when crow is activated. Note 90% offset to match crow mix input.
Mix 6 AX3> LAL- Always On, This mix is used to adjust the ailerons up or down when the flight mode is switched from launch, cruise and reflex.
Note: this program does not employ dual rate, differential, or Expo settings as these are personal preferences and are adjusted per the airplane and pilots desires. Adjust these values per your preference.
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