Quote:
Originally Posted by Mark Suchting
These SDM upper clamps are from Astrosytems:
http://www.astrosystems.biz/utlltl.htm
Unfortunately they break the ideal rule that the truss rods be tied directly together as possible to the cage.. If you haven't done up the clamp real tight you can see that leaning on one pole will cause the other to swing around the clamp axis, multiply that X 4 truss connection pairs and the situation is bad for collimation. However do up the clamps nice and tight and you can get away with it.
Mark |
I think that any flexure in the poles must be converted into a negligible rotation about the clamp - but having never played with one like this I can't be certain.
One thing is for sure, it must be harder to run power up the poles to the UTA given that wood isn't the best conductor in the world!