Just a reminder to keep an eye on your electric trim.
As I was taxiing to the runway I was setting the trim for take off with the wheel, which I always do to check for binding or what not. I could not move the wheel very easily. After a second I noticed that the left half of the split electric trim switch was stuck down, I centered the switch and could freely move the trim wheel now. I ran the trim full up and full down on the electric trim, everything performed nominal.
I took off and did some local flying. When I returned I decided to a touch and go, not to start a debate about touch and goes, but on the roll out I set the trim for take off then set the flaps for take off, and applied full power. As I was watching the airspeed come up to 65 MPH I was launched into air by a big "irregular SFC" aka heave in the runway, "SGU RWY 01/19 BTN 2000FT S APCH END RWY 19 AND 3000FT N APCH END RWY 01 IRREGULAR SFC".
I figured I would just accelerate in ground affect and climb out, only to my astonishment the plane tried to nose drive into the ground!
I had to apply a good deal of back pressure to stay level, as I accelerated and began to climb out the airplane just wanted to nose dive. I glanced down and saw that the trim had run full nose down! The switch had stuck after I trimmed on the roll out. I got it back into trim, went around the pattern and decided to call it a day.
I sprayed the switch with contact cleaner and that took away the stickiness.