Quote:
Originally Posted by thercman
SkyViking,
Those cage trusses are 12" long so I could make a large angle...lol How far appart do you think I should space attachment points on the trusses? The block in the picture above will be 3" x 2" x .5" aluminum. The cut outs will be .25" deep. The larger holes are just for lighteneing reasons...
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I'd say a 45 degree angle is optimal from a theoretical point of view. That will give you maximum stability. I guess your inside tube diameter will be some 14"-15" to acommodate a 12.5" mirror, so with 12" cage trusses you would get pretty close to 45 degrees if you attach the strings at each end of the truss.