ELECTRICS MESS (part 2)

[michaelsnny]

hello folks castle pro came today more advice needed what would be better 2cell 7.4 lipo or 11.1 3cell 2 leads from castle pro 1 goes to battery in on 3gx 2 not sure. can 3gx be powerd from any spare port and lastley switch options has anyone got a suggestion how to wire a switch into this or do i scrap switches all together every ones support has really helped and saved loads thnx

[tomatwalden]

If you've bought a Battery Eliminating Circuit (BEC), it seems somewhat odd if you don't eliminate a battery with it!

What size are your main packs? On my Goblin, I have the BEC Pro wired into just one of the two 6S packs to fly the heli. Wiring diagrams can be found on the Castle Creations page : Castle Creations | CC BEC and CC BEC Pro

I don't know of anybody who uses switches.

[Grumpy]

+1 on Tom's advice, the whole point of a Battery Eliminator Circuit (BEC) is to eliminate the need for a separate battery to power the receiver/servos etc.

The two output wires from the CC BEC should go to the two horizontal sets of pins on the 3GX, the ones below the pins where you plug in the servos. One labeled 'battery in' and the other 'SBus/battery out'.

[Mark_T]

I may be wrong, but isn't he flying a nitro model?

[Phill. H]

hello folks castle pro came today more advice needed what would be better 2cell 7.4 lipo or 11.1 3cell 2 leads from castle pro 1 goes to battery in on 3gx 2 not sure. can 3gx be powerd from any spare port and lastley switch options has anyone got a suggestion how to wire a switch into this or do i scrap switches all together every ones support has really helped and saved loads thnx

You using this in a Leccy model or intending to put it in a Nitro bird ? Looks like I was a minute too late with this reply LOL.
If it is going in a nitro, maybe you ought to think about vibration issues as it was probably designed to work on electric machines.

[Grumpy]

Doh!.. Nitro...That would explain the battery for sure! But in that case you could eliminate the BEC and just use a 2s LiFe battery.

The CC BEC Pro is intended to be a HV BEC that works off the main flight battery on electric models, so you may have issues running it off a lower voltage Rx pack. The spec only goes down as far as 16v input (4s): Castle Creations | CC BEC and CC BEC Pro I'd guess a 3s LiPo would probably be ok too as long as your output was set less than 8v or so.

[michaelsnny]

thanx everyone for respone should of explaned better yes its nitro was haveing issuse supplying power for 3gx was recomended ccpro contacted cc they said would be no problem i could even run of 7.4 2 cell i know everyone has diffrent veiws on this i was running align 2in1 i was recommended ccpro or liFe battery. its bit of a mine feild on the net with what people think of diffrent setups but i will take all this into account you all are a lot more experanced than me i will let you all no how it turns out.... thnx

[bigpops]

Plenty of folks I know run a Castle BEC pro on their Nitros. Usually with a 3S 2200mah, as that's what they have from their Trex 450s et cetera.

Be sure to use both power leads. If there's no spare port for the second one on the 3GX, put it in a Y cable with one of the servos.

[Grumpy]

Plenty of folks I know run a Castle BEC pro on their Nitros. Usually with a 3S 2200mah, as that's what they have from their Trex 450s et cetera.

That's good to know. I thought it should be ok on a 3s pack but didn't like to say categorically as the CC spec only lists minimum of 16v input