I think I'm going to change the angle 4 times a year to maximize power. I calculated the angles I will need for spring/fall and summer. My winter is around 66 deg from horizontal, spring/fall will be 40 deg, and summer just under 15 deg. I kept that in mind when I built the rack, so each corner of that triangle (seen from side profile) can pivot to change the angle. Panel angle change can be done either by shortening the rear leg or moving the rear leg bottom connection fore or aft. The non-winter angles I need will require sets of shorter legs. So I'll make up a set of spring/fall ones soon since they recommend changing to that setting on February 27. I'll need a shorter set by april 20th.
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