How to update the FrSky EthOS firmware on the X20 and X20S

How to update the FrSky EthOS firmware on the X20 and X20S

FrSky's EthOS system offers most of the power and flexibility of OpenTX in a more straightforward graphical user interface. But EthOS also goes through constant upgrades as additional features are added and bugs removed. Updating EthOS on your FrSky X20 and X20S radios is relatively easy, and you can see how to do so below.

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Offsetting flaperons on a DLG

Offsetting flaperons on a DLG

RC sailplanes strive for efficiency, especially competition models like discus launch gliders. Efficiency comes in many forms; it can be in launch height, how well the glider floats and penetrates, or even the setup of the linkages. Offsetting flaperons on a DLG uses all of the servo's deflection to maximize the control surface throw, torque, and accuracy.

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1s lipo batteries for dlg discus launch gliders

Using 1S LiPo Batteries in DLGs

The most popular batteries to power discus launch gliders (DLGs) are single-cell lithium polymer (1S LiPo) batteries. The typical battery capacity is 250-650 mAh, depending on the model's usable space and weight requirements.

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