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After fighting with fixing the stock AC motor for the beacons on my F14 Tomcat (not a fan of the motor design), I made an adapter to use a $15 DC geared motor (24V 100RPM, offset output shaft) from Amazon.

You need to use a bridge rectifier to rectify the AC into DC. I also added a 5W 50 ohm resistor to drop the voltage a bit - the current is very small (a little more than 100mA) so the resistor doesn't even get warm.
I also added a 0.5A fuse inline but that is probably not necessary. If you want it to spin the "stock" direction, you need to connect the motor backwards (its plus terminal to the minus of the rectifier). I didn't use a capacitor on the output of the rectifier or the DC voltage would be too high. It doesn't seem to vibrate or otherwise mind the rectified AC being fed directly into the motor.

I have attached STL files for the updated pulley (it needs a short 3/16 metal shaft pressed in to the top) and the bracket used to mount the motor to the original standoffs. The zip file also contains the solidworks files and STEP files in case you want to modify them. They can be 3D printed with whatever material you want. The two standoff mounting holes in the bracket are for mounting a cheap voltage regulator board to adjust the speed but it seemed fine without it. The overall thickness is the same as the motor flange so the existing screws and standoffs will work. At this point the pulley is pressed onto the motor's D shaft and the 3/16 metal shaft is pressed in to the top - I'm not sure if it will move over time but I'm trying for simple before trying set screws etc.


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https://www.amazon.com/dp/B08FBD6TH5?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1



Beacon Motor Replacement.JPEG
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