Since we're into carbs again at the moment I'd like to bring up the sticky at the top of the page with all the good set up info. It's throttle linkage again and those that have throttles using a lot of expo or mixes need to go there. What brings this up is two planes in the last two days.

One was a 35% that had the throttle servo binding so bad from excessive travel it snapped the servo output shaft clean in half on a JR high voltage servo. The owner was wondering why engine RPM was cycling up and down in flight... That was a dumb way to ruin a very expensive servo. Not to mention no throttle ever needs a servo that fast.

The second was a 40% today where the throttle stick was REAL sensitive. Got inside the cowl and saw the rod was connected at the outside lever points at each end of the servo. Checking the travel adjust at the transmitter showed the travels had been dialed back to about +/- 40% travel to make it work. Twitchy throttle response with a little stick making big changes. Spent a little time moving the throttle connect at the servo to the inside and left the carb end alone at the outside. When all was said and done the travel adjust was 100%-100% open to close and no mix needed anymore. The throttle trim was now effective for setting a great idle and for starting and shutting down the engine. Could not do that prior.