Non BEC wiring for fixed wing

[Captain Video]

Hi
I have a couple non BEC ESCs and want to use them in fixed wing applications. I am at a loss how to wire them up with or without a power distro board. Any advice?
Thank you in advance.

 

[ElectriSean]

You need some sort of external BEC or regulating PDB to supply you with 5V to run the receiver and servos. Generally these will take a wide range of battery input and output 5V. PDB's with regulators are the easiest to make the physical connections, but are kind of overkill for a fixed wing as most are designed for multirotors. A simple splice at the battery connector or ESC power input pads is how I would do it.

 

[w1lp33]

I pick up step down regulators for like $2 at my local electrical shop, and just add a second set of wires off the esc power pads to power them.

 

[w1lp33]

Like this:

 

[thenated0g]

i usually order a few 5v ubec's to keep on hand in case i have one of these. You could also go gasser style and use a 5v nihm pack. As mentioned step down regulators also work fine soldered off your main battery leads.

 

[Captain Video]

On an FT Racer if i were to power it on 5v nihm pack, how long would use expect the pack to last under "normal" flight conditions?
Thanks

 

[thenated0g]

Probably an hour+

 

[Captain Video]

Thanks for your reply. Do you think I could use a 7.4v cell safely instead of the 5v nihm pack?

 

[donalson]

Thanks for your reply. Do you think I could use a 7.4v cell safely instead of the 5v nihm pack?

usually the RX won't care... but servos are limited to about 6v...

 

[Captain Video]

Thanks for the information.

 

[thenated0g]

You can find high voltage servos. In my 2 second google search i came across these that have a range of 6-8.5v
https://alofthobbies.com/jr-ds821-high-voltage-high-torque-digital-standard-servo.html

 

[FoamyDM]

Thank you I've been wondering this so as to work with the twin gremlin pack. (I don't remember seeing a BEC on the ESCs) or re-purposing the gremlin motors with their ESCs that work.