Quote:
Originally Posted by erick
Have you read up on a curved-bolt tracker? Supposed to have lower errors, but design is different - nut has to turn rather than the bolt. Question whether curved bolt would support the weight as well if this is to support your dob?
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A curved bolt is the most elegant way to go for a barndoor, but it might be interesting for a dob, as you say!
I could calculate what size rod would be necessary from a strength point of view if I knew the weight of the dob, radius the screw was to act at, and the maximum angle the barndoor was to operate through... but... I'm not sure what criteria to use for deflection
. So while I'm confident I could design something strong enough (without going overboard
) I'm not sure if it would be any good because it may deflect too much at high tilt angles...
Al.