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HomeAircraftHelicopterMain Discussion › What connectors do you use for your 12S helicopter?
10-27-2011 12:37 AM  6 years agoPost 1
Rockohaulic

rrElite Veteran

Canyon Country, CA, USA, 3rd Rock from the Sun

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I'm curious what connectors most of us are using...

I am specifically wondering how many of you are using separate 6mm bullet connectors. I got this quote today from a battery manufacturer - and I'm not sure I believe it (considering all the helis I've seen at fun flies):
Everybody that is serious about power uses separate 6mm or 6.5mm bullet connectors. It's the only thing that works reliably.
I'm asking because we don't use separate bullet connectors at out field. A few of us have abandoned Deans and gone to EC5 connectors though.

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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10-27-2011 12:51 AM  6 years agoPost 2
red_z06

rrProfessor

Dumont, NJ

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That depends on the discharge rate. If you deplete the packs in 2min, I would say go with 6mm or EC5. We get 6min on the KDS Innova 700, and Dean is fine on it.

If a 6s5000 Trex600 burns through a pack in 3.5min, and 12s5000 Trex700 does the same in 4min. Which do you think sees more current in the lines or connectors?

That is correct. But, most 600 that you see use Dean or EC5. Thus 12s5000 will be just as good using them.

For your reference,

4000mah(80%) burned in 6min has 40amp avg current.
4000mah(80%) burned in 3min has 80amp avg current.

Shorter duration peak of 2-3x avg current should not be a problem.
I believe Deans can handle 80-90a continuous. So at 4min or lower flight time, I would consider using something more HD.

www.JustinJee.com

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10-27-2011 12:55 AM  6 years agoPost 3
Steff Giguere

rrProfessor

St-Eustache, Quebec, Canada

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I've seen guys with Deans, man what a loud spark. I use EC5's and think they are much better for 12s.

Team Synergy, Rail blades, Team Scorpion, V-Team

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10-27-2011 01:00 AM  6 years agoPost 4
red_z06

rrProfessor

Dumont, NJ

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I've seen guys with Deans, man what a loud spark.
While I use Deans, I do use inline sacrificial spark connector made from a male and female 4mm bullet. Typically, bullet tip gets damaged but the mid contact area stays intact.

www.JustinJee.com

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10-27-2011 01:05 AM  6 years agoPost 5
Zaaaguy72

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MN

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EC5's work great all around for me.

Team Sanjel!

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10-27-2011 01:55 AM  6 years agoPost 6
kouasupra

rrApprentice

Fresno CA

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Anything 12s should be run with EC5 connectors.

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10-27-2011 02:04 AM  6 years agoPost 7
red_z06

rrProfessor

Dumont, NJ

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Anything 12s should be run with EC5 connectors.
Why is that?

www.JustinJee.com

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10-27-2011 02:09 AM  6 years agoPost 8
ncarbon

rrApprentice

Kalispell Montana

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Initially
I had Deans on 600EFL, but the spark was pretty intense at times and the soldering alittle tough too. I saw some posts on Anderson Power Poles, and really like them! So the Deans stay on the batteries and Power Poles on the ESC.

Ned

It is............what it isn't!

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10-27-2011 02:11 AM  6 years agoPost 9
Dr.Ben

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Richmond, VA, USA

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I use EC-5's.

HV set ups of 10S or greater generate a particlarly strong arc/spark on first contact, so the primary contact area of a Deans really takes a beating. I've seen guys have to replace Deans on packs in the middle of their lifespan. I have one set with 175 cycles on it, and the primary contact areas of the EC5's are fine.

To be fair, the characteristic of the primary contact area of the connector being spared at plug in is not an EC5-only thing; it's a general bullet connector attribute.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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10-27-2011 02:21 AM  6 years agoPost 10
da20driver

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Midland, TX

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Bullets
I recently switched my 600 and 700's exclusively to Deans 6.5 bullets. WHY? They're cheaper than anything else! Besides the fact that they are super easy to solder, easier to connect up two packs in serial, and are more robust and rated higher than just about anything else we use.

The only downside I can find is the increased danger of somebody plugging a batts leads together.

I made a little jig to add a section of heat shrink that extends past the positive lead to protect against shorts, but is flared to allow easy plug in.

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10-27-2011 02:22 AM  6 years agoPost 11
aviation

rrVeteran

Quebec Canada

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Connectors
I also use EC-5's as opposed to the bullet connectors or this could easily happen to you. With the EC-5's it is impossible for this to happen, so take care.

aviation

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10-27-2011 02:23 AM  6 years agoPost 12
red_z06

rrProfessor

Dumont, NJ

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I had Deans on 600EFL, but the spark was pretty intense at times and the soldering alittle tough too.
This is true. The trick on 8-10 gauge wire dean soldering is;

1. tin both dean contact and wire.
2. Put the tinned wire in vise and reshape the profile to rectangular shape.
3. solder flat part of the wire to flat part of dean to maximize contact area.

You see the burned tip of the 4mm bullet that is used to handle the spark. The Deans never see the spark (unless I forget to disconnect the bullet).

www.JustinJee.com

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10-27-2011 02:24 AM  6 years agoPost 13
red_z06

rrProfessor

Dumont, NJ

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this could easily happen to you.
I have seen this done to a local pilot as well.

www.JustinJee.com

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10-27-2011 02:27 AM  6 years agoPost 14
jgunpilot

rrKey Veteran

Pollock, LA

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I use PowerPoles on 10S and it works well. The spark area is not the normal contact area, and they'll handle amps that will melt the wires first.

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10-27-2011 02:35 AM  6 years agoPost 15
red_z06

rrProfessor

Dumont, NJ

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The point I was trying to make is that, one can use any (dean, ec5, pp, bullet) on a 4-5min flight 12s setup. If you choose one, that should be because that is your choice but not because it is needed.

When using Dean, however, use of sacrificial bullet (as in the picture) is recommended to retain the Dean contact integrity.

www.JustinJee.com

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10-27-2011 02:40 AM  6 years agoPost 16
Steff Giguere

rrProfessor

St-Eustache, Quebec, Canada

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Aviation the exact same thing happened to me when I was using bullets, on a 12S battery.

Team Synergy, Rail blades, Team Scorpion, V-Team

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10-27-2011 02:41 AM  6 years agoPost 17
Band1086

rrElite Veteran

Kennewick, Wa. USA

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I use PRC 6, 6mm bullets...the largest shrouded connectors available. 200A rated. They seem to give little or no resistance. Benny, I'm surprised your using Deans, they are one of the highest resistance plugs out there...not good, esp for high power setups such as 700 12S setups, and even 600 12S.

http://www.progressiverc.com/prc6-c...rs-2-pairs.html

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10-27-2011 02:41 AM  6 years agoPost 18
Stephen Born

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USA

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I also use ec5 plugs with 5mm bullets. Have had no negative issues.

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10-27-2011 02:48 AM  6 years agoPost 19
red_z06

rrProfessor

Dumont, NJ

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Band,

If I started using EC5, then I would stay with it. While they are a bit old, they serve us well. Most of our packs are for multi use.

As stated above, what matters is how much flows (current) through the contacts not at what pressure (voltage).

I can make a 3s or even 1s application that Deans won't be acceptable.

www.JustinJee.com

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10-27-2011 02:53 AM  6 years agoPost 20
aviation

rrVeteran

Quebec Canada

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Connectors
This happened to me who has a lot of experience and a little distraction with a 12S battery set up as well. Pictures sometimes are worth a 1000 words and get the point across a lot faster. And yes it can happen to you with bullet connectors. I am even more experienced now and a who lot smarter.

aviation

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HomeAircraftHelicopterMain Discussion › What connectors do you use for your 12S helicopter?
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