Band1086
Senior Heliman
Location: Kennewick, Wa. USA
My Posts This: Topic Forum | Castle is personal experience, the Kon 80HV I got off readyheli.
I agree that the internal Bec on the 80HV is probably sufficient for
the average pilot out there, but here's the quote from the V-bar manual:
"With 4 digital servos and the VBar, the current consumption of the receiver unit will be at least 50% more than when using a conventional
flybar rotor head. You may need to adjust power supply for your receiver accordingly.
The central unit houses the microprocessor and the power/voltage
supply for the V-Bar. The supply voltage is 3.5 to 9 V. Sufficient
power must be available to the central unit at all times during operation, also during peaks. The three swashplate servos ALONE may jointly draw up to 20A peaks. You must use wires which are suitably
dimensioned. (Two leads recommended to connect to the receiver.)
You must insure that the power supply used has sufficient capacity."
Now the only reason I even mention all this is because back when I was flying Fury Extremes I tried using an 'Ultimate BEC' from a 2000
2 cell Lipo. I had just gotten the lipo and needed to reduce the voltage to the receiver. I was flying pretty hard that flight, but I was staying up around 50-100 ft. I started to do a tail slide
and about 50ft up I pushed full forward on the elevator stick, it wouldn't pull out, it went straight in on the tail. It felt like the batt went dead. But when I got it back on the table the batt still had plenty of power (I had just charged it before the flight). And the servos then were working fine. So that made me think the bec wasn't supplying enough contiuous current. And I know this is a different situation but that scared me enough to shy away from using becs to power high draw servos. After that I started using the 'Arizona' and no probems since. Just a bit experience to hopefully save someone else from a needless crash . |
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