An important feature is being overlooked in these tests and the debate.
PCM (and I think IPD) are programmed to go into fail safe when the voltage
level drops below 4.8 or 4.7 volts. PCM rx's emit a low battery warning which
if ignored, will deploy the fail safe mode. For those of u using 5 cell packs
this is rarely a problem.
But those on 4 cell packs have tempory and short voltage dips after heavy
servo use while in flight. This often goes below the programmed minimum
level. I understand that a lot of the power pilots use 5 cell packs with a
voltage regulator set at 5.7 volts, which eliminates the temporary and short
deployment of the fail safe modes.
Seems like the manufacturers should not be selling PCM except for use with 5
cell packs (I don't know the minimum voltage level for IPD or even if it has
the low battery warning that Airtronics PCM's have).
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