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Balancing 12 SCT
I used a couple of standard aluminium channel 12 x 25 cut to length .. about 500mm and drilled and tapped various 6mm holes along the length. The counterweights are 60mm diameter x 20mm thick disks again drilled and tapped 6mm They weigh about 500gms each x 4 They can be stacked and located to give dec balance.
For balance in RA I find the drive arm is always heavier than the other so I drilled and tapped a 6mm hole in the west ( non drive) arm and use the same weights to provide balance. I used a similar channel to mount the guide scope ( 90ETX)
Works well for me.
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