Model Forum / Radio Controlled / Air Models / June 2009

Flew my Greensleeves electric glider today, with a new battery, new (2.4)
receiver.
I bought the new LiPo (3 cell) to replace a heavy NiCd/NiMh (7 cell).
New battery was charged last month but never flew (weather too bad).
So I discharged it a bit. And recharged it fully this morning.
Flight was OK but no lift whatsoever so it was pretty much on full power for
the whole flight.
Suddenly, with no warning, I had no control, no power, no nothing.
Felt like someone had unplugged the battery.
Normally when the battery gets low the ESC turns off power to the motor but
I still get control to the flying surfaces (is this the BEC thing?). But
today I had nothing.
Luckily the landing was better than I usually manage when I do have power!
and there was no damage, except a bent spinner.
Now at home I've recharged the battery OK; I now have control but no motor
power at all. I did get one little blip, for half a second, but no more.
My current theories are
1. dodgy connection at the battery, switch or r/x.
2. dodgy brand new, expensive receiver.
3. I've burned out the motor using 11V instead of 8.4V (but why the total
loss of control?)
4. none of the above.

Any clues?