📡 Failsafe
A receiver safety setting that cuts throttle (and applies brake) if the radio signal is lost, so a runaway car stops.
Always set your failsafe — an unset one can send the car off at full speed.
What it actually does
The failsafe is what the receiver does when it loses the transmitter signal. Set correctly it brakes the car to a stop and centres the steering. Set carelessly — or not at all — a car that loses signal can carry on at whatever throttle it last had, which is how models end up in roads and ponds.
In practice
Most modern receivers let you set failsafe positions by holding the controls where you want them and pressing a bind or set button. Set throttle to neutral or braking and steering to centre. Test it before you rely on it, by switching the transmitter off with the car safely raised off the ground.
Worth knowing
Re-check the failsafe after any rebind, and after changing receiver or transmitter. Binding often resets it to defaults that may not be what you want.