Lew, the paragraph in which I used the Tri-Planar reference was talking about noise from anti-skate (AS), not azimuth adjustment. Sorry for the confusion. The noise comes from the pivoted AS lever rubbing against the stationary pin attached to the armwand. On a microscopic level, you may as well be rubbing two files together even if one surface has a plastic tube on it to diminish friction. Having all those cantilevered units hanging out vibrating like a tuning fork does not help either.
Nikola, I wondered how many would catch the missing counter weight. You are one of the few. I did have a counterweight "walk away" at CES one year so I do need one...
Trying to explain the bearing system with words only for the 3P is not easy. It certainly is not a true uni-pivot although the horizontal movement is in fact controlled that way. The top horizontal control bearing carries a secondary frame that also houses the two side bearing cups. The two side bearings are mounted directly to the armwand. The side bearings control only the vertical movement. The top bearing cup is mounted such that a cam action can be activated by the small lever located in front of the top bearing. This azimuth adjusting lever will rotate the position of the top bearing side to side and in turn, will rotate the secondary frame. That action will adjust azimuth. Remember, the top bearing carries the entire armwand/secondary frame weight and that assembly is ultimately controlled by the single top bearing. Does this make any sense? I could never be an instructor. It might help when looking at the 3P pictures if you knew the side bearings were pointing down, not sideways as the 2A.
Hope this helps.
Nikola, I wondered how many would catch the missing counter weight. You are one of the few. I did have a counterweight "walk away" at CES one year so I do need one...
Trying to explain the bearing system with words only for the 3P is not easy. It certainly is not a true uni-pivot although the horizontal movement is in fact controlled that way. The top horizontal control bearing carries a secondary frame that also houses the two side bearing cups. The two side bearings are mounted directly to the armwand. The side bearings control only the vertical movement. The top bearing cup is mounted such that a cam action can be activated by the small lever located in front of the top bearing. This azimuth adjusting lever will rotate the position of the top bearing side to side and in turn, will rotate the secondary frame. That action will adjust azimuth. Remember, the top bearing carries the entire armwand/secondary frame weight and that assembly is ultimately controlled by the single top bearing. Does this make any sense? I could never be an instructor. It might help when looking at the 3P pictures if you knew the side bearings were pointing down, not sideways as the 2A.
Hope this helps.