ORIGINAL: captinjohn
If the guy with the throttle that stuck wide open, had a servo on the choke he could have closed the choke enough too slow the airplane down and got the airplane in a landing approach...then placed the choke on all the way and stopped the engine for a good landing. A good save of engine & airplane ! Capt,n
I have never liked the idea of choking the engine to stop it. Had enough trouble starting flooded engines to to make me leery of flooding one on purpose. I'm not big on putting throttle servos inside the cowl either. I like 'em behind the firewall. Not as much heat, vibration and oil back there. I've not yet used an optical kill switch; always used a small servo and a microswitch in series with the manual ignition switch. Seems like I always have a spare servo around. I'll go the optical route next time. Easier to install, I guess.
Bottom line is I like being able to kill the engine from the transmitter at will; both for safety and convenience.
CR