Since the post, i have made a design decision change for the latitude adjustment. I will be using various lengths of threaded rods 10mm for rigidity and use rod end bearing to mount them. I have to wait for the rod end bearing to come in first. Unfortunately for Australian supplier they cost 3 x more than overseas suppliers so i have to wait.
This is the only project at the moment i am willing to spend a bit more money on as the DOB has been awaiting use for a long time and i want to get back to planetary imaging and if stable enough narrow angle deep sky as well.
I may also use the drive mechanism shown in this thread -
http://www.iceinspace.com.au/forum/s...ad.php?t=85597 although not sure what I will do for 360 degree RA adjustment.