1. Mechanical & Airframe Effects¶

Effects driven by the mechanical state of the aircraft (engine vibration, moving surfaces and doors, damage, hydraulics) in the order they appear under the Mechanical\Airframe section of the Settings tab. The badge lines and sub-setting tables are generated from the application’s settings catalog, so they always match the app.

1.1 Controls Lock¶

MSFS · All devices

For aircraft with a control lock (gust lock). While the configured sim variable reports the lock engaged, TelemFFB holds the controls in the locked position. The stick and pedals lock at center, and the collective locks fully down.

When the lock engages, a centering spring pulls the control to the locked position. Once the control is there, TelemFFB holds it with detents and stops the spring. On a device without detent support, the spring stays on and holds the control by itself. A damper also runs for as long as the lock is engaged. When the lock releases, TelemFFB returns the controls to their normal forces.

• Controls Lock Force sets the strength of the detents and the centering spring.
• Controls Lock Damper adds damping while the controls are locked. Very strong detents can make the stick bounce or oscillate; the damper settles it.

Changes to either setting apply at once, even while the controls are locked. The Monitor tab lists the lock’s effects as Controls Lock Spring, Controls Lock Lower Bound, Controls Lock Upper Bound and Controls Lock Damper.

The variable can be an L:Var, a SimVar, or an MSFS 2024 input event written as B:EVENT_NAME. See Input events for how to find the name of a cockpit control.

The built-in profiles for these MSFS aircraft include a control lock: the Saab 340, A2A Piper PA-24, Black Square A36 and B36TP Bonanza, Baron 58, Duke, Grand Duke, Turbine Duke and Commander 114TC, Flysimware C414AW, Pilatus PC-6, Wilga, and Taog’s Hangar H500C and OH-6A.

1.2 Heli Engine/Rotor Rumble¶

DCS BMS MSFS XP · All devices

Helicopter engine and rotor vibration, driven by rotor RPM and blade count.

1.3 Afterburner Rumble¶

DCS BMS MSFS XP · All devices

Rumble while the afterburner is lit, scaled by afterburner stage where the telemetry provides it.

1.4 Engine Rumble - Shake Telemetry (IL-2)¶

IL2 IL2 Korea · All devices

IL-2 exports its physics engine’s own computed engine-shake amplitude and frequency. These effects (one for props, one for jets) render that telemetry directly: startup lope, roughness, and damage arrive in the shake automatically. They are an alternative to the RPM-based rumble effects below: enable one or the other, not both.

1.5 Propeller Rumble¶

DCS IL2 IL2 Korea BMS MSFS XP · All devices

RPM-driven piston-engine and propeller vibration. The two RPM/intensity pairs work together: at the Low RPM value the effect plays at Low Intensity, ramping toward High Intensity at the High RPM value. These are not floor values: below Low RPM (engine start, shutdown) the intensity keeps increasing above Low Intensity.

1.6 Jet Engine Rumble¶

DCS IL2 IL2 Korea BMS MSFS XP · All devices

Turbine rumble scaled by engine power, at a configurable base frequency.

1.7 Canopy Motion¶

DCS XP · All devices

Vibration while the canopy is opening or closing.

1.8 Damage Effect¶

DCS IL2 IL2 Korea BMS · All devices

A short bump in a random direction, at randomized intensity, each time the aircraft takes damage; some hits land harder than others by design.

1.9 Flaps Motion¶

DCS IL2 IL2 Korea BMS MSFS XP · All devices

Vibration while the flaps are in motion.

1.10 Fuel Boom/Door Motion¶

DCS · Joystick

Vibration while the refueling boom receptacle or door is deploying or retracting.

1.11 Gear Buffet¶

DCS BMS MSFS XP · All devices

Aerodynamic buffet from extended landing gear, growing with airspeed between the low- and high-intensity speeds.

1.12 Gear Motion¶

DCS IL2 IL2 Korea BMS MSFS XP · All devices

Vibration while the gear is in transit, with clunks at the ends of travel.

1.13 Speedbrake Buffet / Speedbrake Motion¶

DCS BMS XP · All devices

Buffet while the speed brake is deployed, and vibration while it is moving.

1.14 Spoiler Buffet / Spoiler Motion¶

DCS BMS MSFS XP · All devices

Buffet while spoilers are deployed, and vibration while they move (motion effect currently F-14 only).

1.15 Stick Shaker¶

DCS BMS MSFS · Joystick, Pedals

A stall-warning stick shaker: the distinct high-frequency square-wave shake of the real device, separate from the aerodynamic AoA/Stall Buffeting. In MSFS it triggers from the sim’s stall warning; DCS/BMS use the configurable AoA threshold.

1.16 Tailhook Motion / Wing Fold Motion¶

DCS · Joystick, Pedals

Vibration while the tailhook or wing-fold mechanism is deploying or retracting.

1.17 Low Hydraulic Pressure Effect (Experimental)¶

DCS BMS MSFS · All devices

Simulates the heavy, sluggish controls of a failing hydraulic system: as the aircraft’s hydraulic state falls from the configured threshold toward zero, the damper and friction forces ramp from their normal values toward the levels configured here.

1.17.1 Custom Hydraulic Variable (MSFS)¶

TelemFFB reads the aircraft’s hydraulic state from HYDRAULIC SYSTEM INTEGRITY. Some aircraft model their hydraulics in their own variables and never change it. For those, enable Custom Hydraulic Variable and enter the variable that shows the hydraulic state: a SimVar, an L:Var or an input event (B:).

The effect needs a value from 0 (no hydraulics) to 1 (normal). A switch, or a value that already reads 0 to 1, works as it is. For anything else, enter a Transform to 0-1, with x standing for the variable’s value. The syntax is the same as the Scale field in the overrides editor:

The Monitor tab shows the raw value as HydSys and the result as _hyd_health. A transform TelemFFB cannot read is reported as a configuration error. The built-in profiles for the FlyInside Bell 206 and the CowanSim R66 already set this variable.

1.18 Vibration from Telemetry (FlyInside)¶

MSFS · All devices

For FlyInside helicopters in MSFS: renders the vibration data exported by the FlyInside flight model directly. See FlyInside Helicopters.