I know this is a Multirotor forum,BUT:
I had bought & installed a Savox mini servo in my R/C oval car for a big
race at the Daytona Speedway Spectacular race a couple of years ago.
The servo made a ton of noise while turning. After 2 laps,it would shut down
my whole radio system. Nevertheless, I never finished the whole weekend.
Found out later that the current draw on their servos was so ridiculous, it was
sucking all of the power away from my ESC.
I ended up going back to a Futaba servo & never looked back.
Stay away from those Savox things!!!
-George