A TRACKING SOLAR CONCENTRATOR
HUB AND ARRAY MOUNTING
Mount the hub assembly complete with its drive system on your support structure. Remember, the spindle (104) points North. In fact, if it had a hole bored through its length you would be able to sight through it to the North Star. If you have made an error in alignment, it will become obvious when we try to track the sun later and this is where the elongated holes will come in handy.
Unless you have access to hoisting facilities, I recommend mounting the mirror array at this time before we make it heavier. There is still a bit of welding to do on the wheel (107) for the tilt drive system, but we found it more convenient to have things bolted down when installing it.
If you have been following the order of assembly, the wheel and shaft (109) were left assembled to the mirror array bearing plates (008). Adjust the bushings (110) to center the wheel and lock the set screws down. Find some help and set the mirror array on the hub after you have made sure that the shaft (109) is aligned to the mark previously put on the drum and bolt it down with the lug nuts. At this time the array is unbalanced and feels a bit insecure because of the lack of a tail assembly. Don't try the motor drive yet. Next, we'll build a tail and counterweight system
