Originally Posted by
InspGadgt
Frans the issue isn't with the ESC it's with the reciever. The Spektrum systems are very sensitive to voltage and if it drops to low it shuts off. At 3.7v the reciever won't even run so you'll need a reciever pack. Other recievers have issues with that low of a voltage as well but the worst is probably the Spektrum.
Running a 6.5 on 38mm/rev (sintered rotor) without a receiver pack, I haven't had a single glitch from my Spektrum. I notice that people who have issues with Spektrum also seem to run digital servos, so maybe this is another source of current drain? I use a 9602.
A receiver pack doesn't seem to be mandatory with BL, but it does help if you find the car slows up during the last couple of minutes, but the pack has charge left, or if you get any glitching from the Spektrum. HTH
Frans how hot will be the ECS after te race???? whit a 4.5???
my LRP getting 80C whit a 4.5
My LRP Sphere 2007 is hot to the touch after a race (see motor and gearing details above) - not measured it by it is slightly hotter than the motor, or a charged pack of cells. No issues though, it just runs and runs and... HTH