For many years I have been attempting to add some action to my models by animating turrets, catapults, radars, ect. The issue that I always ran into was how to achieve 180 + greater degrees of rotation when I needed it. Radars were no issue, but turrets and the like were. I am no electronics wizard and my computer skills run to opening my browser successfully. I have used gear drive and servo in the past, but they were a pain to rig.
Recently I found GoBilda servos. Available in standard or high torque versions, these units can be ordered in two different configurations, 1) as a 300 degree rotation proportional servo, and 2) as a 360 degree rotation servo with proportional speed and directional control. Here in the States they run around $28 US. I found that they can be ordered from third parties or direct from the manufacturer. I have used 8 on my current build and am really happy with how they worked. The shop I ordered them from had hardware that allowed easy direct connection between the unit and the servo. NO gears, ect. Here is a link to the manufacturer's page: https://www.gobilda.com/servos/
No, I do not own stock in the company, sell the servos, or otherwise, I just like that they are available.
One caveat: most radios will require the use of a servo stretcher in order to get the full 300 degree rotation, so that cost should be figured in to the servo cost as well.⚡