Any benefit to supplying a Vector with a backup 5V BEC?

[Billy_boy_2010]

Hi guys

Im fitting a vector to my venturi and previously i have never bothered with a backup voltage supply.

However, in the event of a current sensor failure- i could fit a backup 5V supply from a BEC. is there any benefit to this?

I know it used to be the done thing but do people do it now?

Any advice would be great thanks.

[SnoozeDoggyDog]

Subbed ...

[BlueFlyer]

I know it used to be the done thing but do people do it now?

I think you're getting 2 different things mixed up here:

1 - Using a separate BEC (drawing power direct from the flight LiPo) to provide 5v to the RC receiver and servos, as a contingency in case the ESC blows.

2 - Using a separate 5v power supply to provide backup power to the Vector OSD in the event that the Vector's own PSU/Current sensor packs in.

They're not the same thing. You only need to consider No.2 if you have a Vector OSD so I wouldn't say it's "the done thing".

However, if you're concerned (I wouldn't be) it's really as simple as using a jumper to connect the middle pins of the RSSI/5V port and the AUX2/M6/TEMP port.

The AUX2/M6/TEMP middle pin is on the "servo power rail" and will therefore be getting it's 5v from however you're powering the rest of the servos/RC receiver... whether that be your ESCs built in BEC or a standalone BEC... as is "the done thing" No.1 above ;)

[SnoozeDoggyDog]

Unsubbed, brain meltdown ....  :o

[Billy_boy_2010]

You're dead right blue I was confusing the two

Normally people use a bec I case the ubec from the esc fails. Given the vector doesn't supply the servos, it seems quite sensible to have a backup source from somewhere still.

But that makes perfect sense- I can provide a backup to both the servos/Rx AND the vector with one stand alone bec and a small jumper. Ideal thanks! :)

On a side note- im a little concerned by the vectors current sensor limit. I'm using a beast of a motor and wouldn't be surprised to see 80A at times. Is this going to fry or overheat the thing!?