Hey Delbert Pierce,
Sry to hear abot your loss

we all crash, its on of the annoying parts of the hobby. [:'(]
As for your reciever pack, im surprised it was starting out at 5.2volts and dropped to 4.6volts. I thought i heard somewhere that most reciever packs, the standard ones that is usually shouldnt be flown below 4.8volts or so. Not sure if the reciever pack dropping below this "safe zone" might of caused a problem or not, but its definetley possible.
I know the receiver packs i run are just the standard ones that come with the transmitter when you buy that, i think its a 4 cell 4.8volt 650mah or something like that, a nicad pack. Mine when fully charged on the wall charger after 12-15hrs of charging are usually up to 5.85volts. After 4-6 flights at the field without any extra charging, ill return from the day of flying and check and they usually dont drop below 5.24-5.40 So im wondering if maybe the reciever pack might of played a part in the problem and the crash? Just my guesstimation as to what might of happened, id definetley get a new receiver pack tho

sorry again to hear about the crash man.
-David