(source - all photos © Drive&Fly Model Club)
I wonder what exactly the RELIGHT push-button is for. It's clearly not the 'reheat' control (another word for afterburner, which is not fitted on the Viper, apart from some amateur variants...)
I would guess it controls the engine ignition for use in case of flame-out, but then I noticed this other photo, showing what appears to be the starter/ignition controls (located in front of the throttle):
so my question is: what exactly does the relight button do, as opposed to the starter/ignition controls?