To the OP - Given the scarsity of single-engine airplanes with rudder trim, it's no wonder so few people know how to use it properly. Allow me to explain: If you poke your nose around the Cherokees' little rudder trim adjuster gismo in the cockpit, (down on the floor, between the rudder pedals, if my memory serves) you'll probably see that it has a marked 'takeoff' range...just like most elevator trim wheels. So, just set it for takeoff already. After takeoff, once you're in a nicely (elevator-trimmed, steady speed) climb, you'll probably notice you have to hold - some - rudder pedal pressure to accomodate the outrageous P-factor produced by that monster 235hp engine. You know, just enough pedal pressure to keep the airplane pointing straight, like it's on rails. Note: if a wing feels heavy, it's probably because you aren't holding enough rudder. Could even be left rudder, if you've put too much righ rudder trim prior to takeoff. With me so far? So, while you're keeping the airplane straight, while looking over the nose, slowly reach down - don't look at it, keep looking over the nose - and turn that little black knob so as to reduce what little rudder pressure you're holding on the pedal to zero. Just like you do with the elevator trim...while you're holding the airplane steady, slowly trim the pressure out of the controls. Contrary to some of my fellow posters, I am not a big proponent of using the ball...it can lead you astray. If the wings of the airplane are level - zero bank - AND the heading is constant, the ball should be dead nuts center...if it isn't, the ball is wrong.
