F3F slope racer

2022-01-09 version 6.0 released see version history

2019-03-31 winner Winter league Champion of Champions
2018-08-19 winner English Open F3F (4 out of the 24 pilots were using this template)


The template of choice for slope racers with 6 servos. It has undergone continuous development since its release in 2013, and is well proven in competition both in the UK and abroad. The template is also aimed at sport flyers who want maximum enjoyment from their moulded gliders.

Version 6 has some useful refinements including a novel and simple way of adjusting crow compensation.

Key features :

The setup also features a special 'CAL' 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



- For 6-servo gliders
- 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 crow compensation

Crow functions

- Aileron diff suppression
- Reverse diff
- New in v6: simple compensation adjustment
- Compensation curve
- 'Autocrow' option
- Adjustable deadband on crow stick

Control surface calibration

- 'CAL' mode for adusting travel + limits
- 5-point balancing curve for flaps
- Full rotation available on flap servos
- New in v6: channels 7-12 free

(Optional) advanced snapflap mix

- Lua script supplied for advanced snapflap

F3F v6.0.0

Transmitters: Any OpenTX transmitter with 2 pots or sliders
OpenTx: 2.3.5 or later


Legacy versions:

For OpenTx 2.2, use version 5.0.2
For OpenTx 2.1, use version 4.3.0


Blog: designing a transmitter setup for F3F


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