Power Distribution Board

h7snk9 · Mar 4, 2018

Hi there,

I have 4 50A escs that I am trying to wire up to the battery. I do not have a power distribution board but was wondering if it would be a working solution to bundle up the 4 leads from the escs together (both positive and negative) and connect those directly to battery?

mozquito1 · Mar 4, 2018

It would work but it's very dirty.
I would advise atleast one 35v 1000uf capacitor. 50amp esc's, what series lipo are you using to warrant 50a.

The pdb was self made from old copper clad board,it's a bit neater, but still needed a capacitor even though the esc's have them on.
What other components have you got as 50amps or above 5S certain parts are not compatible. Matek make pdb's that are rated 180amps. You should atleast get one of these or higher amperage if possible.

h7snk9 · Mar 4, 2018

Hi thanks for reply. I have 4s lipo battery but had the 50A escs just in the back room from a while ago. The motors have a maximum current draw of around 10A.

I have limited time to finish the project so was wondering if these specs would work with just soldering all 4 esc wires together

Thanks !

mozquito1 · Mar 4, 2018

Are they opto esc's or do they have capacitors & supply 5v through a bec. ?
How will you power an fcb directly off a 4S Lipo, the only way I could think is off the Lipo's balance lead.
I wouldn't advise adding any fpv gear unless it all high voltage, or via an LC filter.

h7snk9 · Mar 4, 2018

These are the ESCs they have a 5A BEC

mozquito1 · Mar 4, 2018

Beefy

Power the cam off one if it's 5v.
Power the fcb off another.
Vtx are 5v & if not should be pretty clean through an LC filter off the main lines.

holtneil · Mar 4, 2018

If your not running FPV you should be able to solder all the power leads into one set of leads for the battery ,you need to be good at soldering so not to get a dry joint
Power boards are cheap If you have the time to get one it will make a nicer job of the build
The bec from the esc will power the FCB

GJH105775 · Mar 5, 2018

If you are neat about routing your power it can be almost as neat as PDB. I had a 270mm tilt-rotor build a while back that it was easier to run the wires through the arms and didn't have enough foom for a PDB (was pulling 200 amps as well so most PDBs would not work). It could have been neater, but if I had it to do over I'd still solder up the wire harness. If you have the room and money a PDB will make life easier, if not it isn't a big deal.

mozquito1 · Mar 5, 2018

Although you would be spending money, buying a pdb will probably save you money. Although you have low ESR Capacitors on the esc's I would have one directly on the battery + - pads.
Those esc's will crank up the motors to the max so check for heat. What motor do you have.

Power Distribution Board

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