Quote:
Originally Posted by Cincy
I have an SG2100. In the instruction booklet it shows a dish clamped about half way down on the shaft. I've seen some pictures of setups where the dish is clamped high up on the rotor shaft.
It seems to me it would make a difference. Does anyone know if it does? |
Basically, it doesn't matter where, up/down on the shaft you put the dish, unless where you put it ends up having the dish bump into something. However on the version of SG2100 that I have, there are some holes on the shaft, and depending on what kind of dish mount you are using, sometimes these holes can keep your dish centered on the shaft. Ie for proper operation of the motor, the dish should be pointing away from the motor, and with some mounts, using those holes helps keep the dish oriented right. If you don't use the holes, you have to be sure the dish is tightly clamped onto the shaft so it doesn't slip, otherwise USALS won't work right (USALS sometimes doesn't work right anyway due to other factors).
Also, although it doesn't matter where on the shaft you put the dish, it is best to keep it on the straight part of the shaft, rather than up where it curves, since that will change the offset angle of the shaft, which in turn changes the angle you'll need for the dish elevation. (not sure that is clear)