CONSTANT SPEED 57 CONTROLLER

Set the RPM.
Forget the lever.

An automatic propeller governor with night mode, in a standard 57 mm cutout — your new flying companion from 800 to 9999 RPM.

Documentation →
Constant speed 57 controller

Three modes. One knob.

The device controls the propeller pitch to reach and hold the desired engine RPM. Set the number once and fly the airplane.

HOLDING TARGET
2450
RPM
+

Display rendering — night mode switches automatically with the ambient light sensor.

IAS MODE · SINGLE-LEVER OPERATION

You fly the speed. The map flies the prop.

In IAS mode the controller holds a map between indicated airspeed and engine RPM. Drag the speed and watch the propeller follow.

INDICATED AIRSPEED
95 km/h
TAKEOFF & GO-AROUND · FINE PITCH
MAPPED RPM
2600

Demo rendering — the real map is configured for your airplane and propeller.

1
On the ground

The propeller stands at its takeoff setting — full power available the moment you release the brakes.

2
Into the cruise

Accelerate, and as the IAS rises the map walks the propeller to its cruise setting. No second lever, no checklist item.

3
Ready to land

Slow down on approach and the propeller returns to a go-around-ready position — if you push the throttle, the thrust is simply there.

FAILSAFE
Hardwired manual control.

The Increase and Decrease buttons bypass the electronics — full pitch authority stays with you even with the electrical system dark.

DISPLAY
Readable in full sunshine.

We use the highest-quality displays, made for the high-sunshine conditions that are the standard in a cockpit.

INSTALL
Standard 57 mm cutout.

Drops into the panel like any 57 mm instrument, with a wide 10–28 V supply range and 120 mA draw.

SINGLE LEVER
IAS mode with LX devices.

Connected over CAN to an iris All-in-one, iris Airspeed or iris EFIS, the controller maps RPM to your airspeed — single-lever operation from takeoff to go-around.

NIGHT MODE
Auto dim, no glare.

An ambient light sensor switches the device to night mode automatically — dark background, reduced backlight, no glare in the canopy.

SIGNAL INPUT
Hall or RPM signal.

Reads a Hall sensor or an RPM signal — use the source your installation already has.

COMPATIBILITY

Made for your combination.

ENGINES

Any engine with an RPM pickup — Rotax 912, 914, 915 and 916, Lycoming and more.

Rotax 912Rotax 914Rotax 915Rotax 916Lycoming+ more
PROPELLERS

Designed for WoodComp constant speed propellers — and flying with others like DUC Hélice.

WoodCompDESIGNED FORDUC Hélice+ more

Technical specification

Size
62 × 65 × 55.5 mm
Weight
188 g
Power supply
10–28 V DC
Consumption
120 mA @ 12 V DC
Measuring zone
800–9999 RPM
RPM resolution
10 RPM
Max motor supply
8 A
Signal input
Hall / RPM

Frequently asked questions

Which engines does the controller support?

Any engine with an RPM pickup — Rotax 912, 914, 915 and 916, Lycoming and more. It reads either a Hall sensor or an RPM signal.

Which propellers does it work with?

It was designed for WoodComp constant speed propellers and flies with others like DUC Hélice — ask us or your dealer about your combination.

What happens if my electrical system fails?

The Increase and Decrease buttons are hardwired straight to the governor, so full manual pitch control keeps working even with the electronics dark.

What is IAS mode?

Paired over CAN with an LX airspeed source — iris All-in-one (certified or non-certified), iris Airspeed or iris EFIS — the controller maps RPM to your indicated airspeed for single-lever operation from takeoff to go-around.

NOT SURE YET?

Talk it through before you decide.

A free online video call with LX navigation or one of our dealers — in your language, about your panel, your aircraft, your questions.

Book a free consultation

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Complete your panel.

SINCE 1975

Built on fifty years of variometers.

From the first electronic varios to full glass cockpits — designed, calibrated and supported in Celje, Slovenia, and flown on every continent.

One less thing to manage.