Engine

Most likely it's your throttle control servo or the linkage. Also, check your transmitter to see if you have the trim set right.

Actually, all kidding aside, before you change your O2 sensor, have your ignition coil tested. Your O2 sensor could probably be removed entirely and your engine wouldn't necessarily run rough. Your car computer would correct for it. The coil - bad spark, is the one thing is simply too fast for the computer to correct.

Now fix that thing so you can cart your airplanes to your flying field.

-- Ray

Is this happening on the ground or in the air? You might be carrying a a little too much weight for the wingspan.

You must be really stupid or a damn troll. What part of rec.models.rc.air relates to your problem?

He uses a Tahoe to get his RC planes out to the flying field?

Just a guess.

My bet is the former. Get a clue, OP.

Lighten up, guys. Everybody makes a mistake now and then. No harm done.

Actually the OP just didn't put OT in the subject line. He did ask a knowledgeable group a question and got one good answer(and mostly BS replies) If he's a troll, who got hooked? All of us who replied. :) mk