oh they don't get hot when not moving, and they are only pulling a quadrant gear to move the needle on a gauge, so a very small load,
it's just when they are running on the sweep pattern, they get hot,
i know servo's should all run on around 20ms, but apparently these run much better on 16ms,
i imagine that they would be absolutely fine, as they won't be sweeping across the dial all the time when in use, one will be slowly moved to a certain position, then will vary slowly to represent air tank pressure,
the other will move fast to positions varying on brake chamber pressure indicated, then go back to zero position and stay there most of the time,
Just they are fitted inside an automotive gauge, which requires the bezel prizing off to gain access, so i'd really rather not have to open it up again in a few weeks time to replace a burn out servo if i can avoid it by changing a few parameters of the library now.
if it matters, these are 1.7g servo's, about the smallest rotary servo's you can get, i did try those featherlight linear servo's, but they were naff, lots of backlash due to the way the screw thread is mounted to move the horn along the linear pot,
Just found out these servo's are actually rated for 2.8 to 4.2 volts, so i've been over volting them a little rather than under volting them,
They come with a micro JST connector fitted, so are designed to plug into those feather light RX boards for indoor planes or small helicopters, which usually run on a single cell LiPo, and hence they 'could' have a different pulse requirment to normal servo's?
Also they have a 140 degree motion, but move 90 degrees on the 1 to 2ms pulses, needing 0.8 to 2.2ms to get max rotation.