Some unexpected result, the XM20A actually didn't perform as well as the littlebee... The difference isn't massive, just a few grams of different in peak thrust, but efficiency also isn't any better...
Me and Konrad both tested these ESC, with different thrust equipment and motors, same conclusion.
theoretically, the advantage of using XM20A is the capability of running higher FC looptime and ESC refresh rates more effectively (i.e. raceflight and multishot, resulting in better flight characteristics), as well as handling higher eRPM.
However with what we tested, I don't think it's necessary for everyone to upgrade to the XM20A though. For example someone who is happy with 2K looptime with oneshot, on some 2300KV motors running on 4S, might be better off to just stay with the good old Littlebee
See my full review:
http://blog.oscarliang.net/xm20a-esc-f396-review/
Me and Konrad both tested these ESC, with different thrust equipment and motors, same conclusion.
theoretically, the advantage of using XM20A is the capability of running higher FC looptime and ESC refresh rates more effectively (i.e. raceflight and multishot, resulting in better flight characteristics), as well as handling higher eRPM.
However with what we tested, I don't think it's necessary for everyone to upgrade to the XM20A though. For example someone who is happy with 2K looptime with oneshot, on some 2300KV motors running on 4S, might be better off to just stay with the good old Littlebee
See my full review:
http://blog.oscarliang.net/xm20a-esc-f396-review/