F3F slope racer

24 Mar 2018 - v 5.0.0 - see version history.


F3F Slope Racer is a full-feature setup for slope sailplanes with 4 + 2 servos. It's optimised for F3F competition but is also suitable for sport flyers who want to extract that extra bit of performance from their models. This template is used by several competition pilots in the UK and abroad.

Key features :

The setup also incorporates a 'Calibration' mode, for quick and precise adjustment of control surface travel/tracking.

Taranis layout

Default interface (X9D + mode 2 shown) - flight modes , mix adjusters
Switch layout can be customised


Hardware and o/s requirements

See Download section


- For 6-servo gliders with
- V-, T- or X-tail
- Any stick mode

Flight modes

- Normal, Climb, Landing
- Reflex option in Normal mode
- Pump mode (optional)
- Voice confirmation
- Switch customisations

Trimming adjusters

- Adjuster for aileron diff
- Adjuster for camber preset
- Adjuster for snapflap volume
- Adjuster for snapflap expo
- Adjuster for spoiler compensation

Spoiler functions

- Aileron differential suppression
- Reverse differential
- Spoiler/elev comp with curve
- 'Instant Spoiler' option
- Adjustable deadband

Advanced snapflap mix ready

- Easy integration of optional snapflap Lua script

Control surface calibration

- 'CAL' mode for adusting travel + limits
- 5-point balancing curve for flaps
- Full rotation available on flap servos

F3F v5.0.0

Supported transmitters: Q-X7, X9D, X9DP, X9E, X10, X12
For OpenTx: v2.2.1

Note: this version is not compatible with OpenTx 2.1. If you're using OpenTx 2.1, then please use F3F 4.3.0


Blog: designing a transmitter setup for F3F


Feedback and queries are always welcome - I can be contacted here.