Low tech cheap tracking could improve solar performance substantially.
Low tech tracking would be valuable in really poor countrys for solar cooking and perhaps save many trees from the cooking fires.
This instructable describes my tracker that I made from an old and ugly clock.
This is a collaboration so if you have an old clock lieing around, please set it up with a gearwheel as I did and see how sturdy it is. If we can find a strong robust one, It could be bulk ordered for appropriate tech solar timing projects.
Step 1: Stripping the clock
The hands are attached to 3 concentric shafts that are connected to the gear wheels in the clock
I had to find the wheels inside that turned the minute and second hand and cut off the pieces that went up through the middle. therefore I was left with the shaft that turns the hour hand. The hour hand is friction fit onto the shaft.
I wanted something stuck on much more firmly!
Unfortunately I dropped the clock during my taking it apart and I cracked the connection to its face.