I have a lightly-flown V1 Edge with 5645's on the ailerons and elevators. I do not notice this personally ( nothing to compare), but many people write of poor centering with the 5625's/5645's. According to Hitec's specs these servos have an eight micro-second deadband.
Has anyone on here ever reprogrammed, that is reduced, the deadband?? If so, was an improvement in centering noticed?? Is lack-of-centering truly an issue, or just an issue here in cyberspace?
I am planning a V2 of the 50cc Extra and the 5645's look pretty good, except for the deadband, on paper. Just wondering what others have done about the centering.
ORIGINAL: Pat Roy
If you've ever had a servo that did not center consistently you would find that it's a very big issue indeed. It's impossible to trim a plane with servos that do not center well. A very tight dead band is what makes good centering happen. A perfect example was the older Hitec 225mg. You could set a surface up any way you wanted and rarely see the same place twice with the servos at neutral. It can be pretty ugly.
Pardon me, my original post was written with insufficient clarity. I am aware of the necessity to use servos that center properly and repeatably.
My original post was asking specifically about the centering of the 5625/5645 servos and whether or not their reputation for poor centering was deserved. And, if the reputation was deserved, what experiences have people had with reprogramming those servos to reduce the deadband.
I ask because my V1 Edge seems to hold trim very well. Perhaps I just got a few good servos and would not want to press my luck by using them in another airplane and finding that they would, indeed, not center well enough to reliably maintain the airplane in trim.
Thanks