PowerJive 120 Setup?

[#1RCHelifan]

Have the PJ 120 and recently placed it in a Compass 7HV operating on (2) 5000 mah 6S Gen Ace lipos. I'm running Futaba BLS 451 on cyclic and Align DS 650 on tail. The motor is the newer stock Compass version. All I do is scale type flying with absolutely no 3D whatsoever. Will the PJ 120 internal BEC be sufficent for my setup or should I look at running a separate BEC or RX battery? I've heard that the BLS 451s draw few current, not so sure about the Align DS 650.

[dl7uae]

It will be sufficient:

12A pulses @1kHz continuous.

15A pulses @1kHz --> switch off after 5..10 seconds.

After an overamp condition have been detected: BEC voltage comes back after 250ms.

pulse: fifty-fifty

Don't fly anyway without a buffer: EMF voltages by servos may force the BEC to switch off (if 7V exceeded). BEC comes back 250ms after overvoltage condition has gone. Without a buffer that voltage gap would be already enough for brownouts in components that contain a MCU.

The above (250ms) for JIVE firmwares 9+.

[Wh1teAfr1can]

As long as you run both the slave and master wires it will work perfectly
It will be fine without a buffer pack but it is always an added safety feature as Tom suggested. On 4 futaba HV servos which usually draw a bit more current I'm seeing spikes to 10 amps with a continuous of 2-3 amps for all 4 servos.
Now if you adjust the bec up to 6v then I would make sure you have a buffer as it puts more stress on the bec at that voltage

[Rc Zombie]

Im thinking about buying the jive 120 I noticed the bec is only 5-6 v will it run servos on 7.2v or do I need to supply the reciever with its own pack

[linus]

Hi

the JIVE BEC can do 6Volt max. It is not recommended running HV servos on the JIVE because of 2 reasons:

a) HV Servos can cause the JIVE BEC to reset --> Buffers are a must!

b) HV Servos do not perform great on 6V

So, get either normal servos (the most classic Futaba BLS45x/BLS25x seriex 6V servos still perform great!) or a additional BEC.

Linus