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i can't comment on those exact models of servo but generally servos are quite tolerant of different refresh rates as long as the actual pulse is the correct width when it comes.
as you slow down from 50Hz you tend to get less torqe from the servo but the same resolution.at 25Hz you typically have a servo that can move to position but not carry any sort of real load.
i have not experimented with the limits as you increase the pulse rate that far. 60Hz would be fine. i have no idea about 80...these guys would definitely know: http://www.rcgroups.com/diy-electronics-199/
Anybody has successfully run a Futaba s3003 at ~40Hz or ~80 Hz instead of the common ~50Hz?
[...] if its too fast, your servo risks burning itself out. I have some micro futaba servos that start to burn out around 13ms (77Hz).
[...] 12F615 with the Capture/Compare/PWM module. Virtually the same cost.
Thanks, but how would that solve this issue?
It will allow you to run either servo pulse output or ignition timing capture as an independant hardware process without your white gloves. See dunk's last post.