Rob replied to the topic 'DIY Flatfield Dustcover with RPi' in the forum. 4 years ago

Typical servos are designed with aircraft control surfaces in mind so are always limited in their range of motion to prevent linkage binding. There is however another class of servos designed for robotics and sail winches with 360 degree or even free motion. Might be worth doing a search using these search terms.
with such a large range of movement and direct drive you could bring the flap all the way parallel with the OTA to minimise windage.

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