ORIGINAL: Alan W
ORIGINAL: rjtw
Not sure I understand the logic here. I think what the poster is suggesting is re-setting the throttle such that full throttle on the stick would be seen by the motor as, say, 3/4 throttle,
Im not an EE, so I cant give a highly technical answer, but as stated - power through an ESC is simply on/off phasing ... less power is more ''off'' phases / more power is more ''on'' phases. From what I understand, the FET's (which do the switching) do not like to be in a state of mostly ''on'' under high current applications for long duration.
I did some checking and asking because I dont like to be the source of mis-information or appear as a troll ...
... and what I found out is that what I stated about the speed controller not liking part-throttle high amp operation is true to a certain degree. If operated within design spec's for the ESC, this should not pose a problem, but if operating outside the specs, as in huge amp draw for very little time as in F5B (where sometimes amp draw is double of mfg spec but for only a few seconds ... think 200-250a on a 125a ESC) then it is highly adviseable NOT to use part throttle as the spikes associated with the FETs on/off phase will blow them up.
It was also advised that say, you have a 2000kw system but only ever fly at 1500kw, that you should prop down instead of running mostly part throttle or using end point adjustments. Less heat is needed to be disapated by the ESC under fully on state -full throttle- as opposed to switching constantly at say 75% throttle under a considerable amp load.