What connector for 8awg wire?

[WickedFog]

Okay will do. When I get up to 6s and 8s in the future what connectors should I use?

I don't have any 6s packs, but on my Kraton 6s which uses two 3s batteries, I am running EC5's with no issues. So until I go over 6s, I will be running EC5's. If I ever get the X-Maxx done I'll probably run them on that as well, which will be 8s. But I may opt for QS8's on it. Not sure yet.

 

[Lukedavis]

I don't have any 6s packs, but on my Kraton 6s which uses two 3s batteries, I am running EC5's with no issues. So until I go over 6s, I will be running EC5's. If I ever get the X-Maxx done I'll probably run them on that as well, which will be 8s. But I may opt for QS8's on it. Not sure yet.

What’s the max amperage for them? Also what would xt120s be used for?

 

[Greywolf74]

IMHO you can use EC3, XT60, or any kind of Deans for 2S and 3S.

For 4S - 6S Id say EC5, XT90 or genuine Deans.

For 8S Id Use EC5 or XT120. I've used genuine Deans on 8S in my Kraton 8S and havent had one fail yet but they do get pretty warm.

If I was doing something with high Amp draws like speed runs or No Prep Id use like EC8, QS8 or the biggest connectors I could find for the lowest resistances.

 

[WickedFog]

You can google any of the connectors and get the specs for them. XT120's are the same specs as EC5's I believe. So if you wanted to stay with XT, you could use them instead of EC5's.

 

[Greywolf74]

You can google any of the connectors and get the specs for them. XT120's are the same specs as EC5's I believe. So if you wanted to stay with XT, you could use them instead of EC5's.

If you're looking for amperage specs though make sure you are comparing the same brands. A lot of these Chinese manufactures will have a lot of variance for the same plug. For example if you're trying to determine what the amperage difference is between XT60 and XT90 make sure both connectors are AMASS or the from the same manufacturer. If you look up XT90 on Aliexpress for example youll find multiple companies making different claims for the same XT90 connectors. I'm not sure if thats from differences in manufacturing or just differences in the way they test them but there can be some big differences. EC connectors are the same

 

[WickedFog]

If you're looking for amperage specs though make sure you are comparing the same brands. A lot of these Chinese manufactures will have a lot of variance for the same plug. For example if you're trying to determine what the amperage difference is between XT60 and XT90 make sure both connectors are AMASS or the from the same manufacturer. If you look up XT90 on Aliexpress for example youll find multiple companies making different claims for the same XT90 connectors. I'm not sure if thats from differences in manufacturing or just differences in the way they test them but there can be some big differences. EC connectors are the same

I only ever look at Amass. All others are just crap.

 

[Greywolf74]

I only ever look at Amass. All others are just crap.

I do like me some Amass, except their Deans. I mean their Deans are nice for generic Deans but not as good as the original

 

[WickedFog]

I do like me some Amass, except their Deans. I mean their Deans are nice for generic Deans but not as good as the original

That's ok. Deans suck

 

[Greywolf74]

That's ok. Deans suck

only the generic ones!

***MOM! KEVINS PICKING ON ME!!!***

 

[WickedFog]

only the generic ones!

***MOM! KEVINS PICKING ON ME!!!***

Lol. They all suck for me. I can't ever get the durn things apart, even after trying the rolling fingers trick. And the old RC's I had with them, the spring in them would start to get thin and wear out. But I drove RC's every day back then.

 

[Jerold]

+1 on the QS8. I've run 500+ amps through them and they are solid. However, they are a pain the butt to solder and the connections are VERY stiff. Make sure you have them fully seated or you will burn up the connectors.

If you need a high current anti-spark connector that's what I would go with.

You can also use 8mm bullets. They are less expensive, much easier to solder and work with. However they are not a secure and are not anti-spark.

 

[Lukedavis]

+1 on the QS8. I've run 500+ amps through them and they are solid. However, they are a pain the butt to solder and the connections are VERY stiff. Make sure you have them fully seated or you will burn up the connectors.

If you need a high current anti-spark connector that's what I would go with.

You can also use 8mm bullets. They are less expensive, much easier to solder and work with. However they are not a secure and are not anti-spark.

What does anti spark do? Sorry if it’s obvious lol

 

[WickedFog]

+1 on the QS8. I've run 500+ amps through them and they are solid. However, they are a pain the butt to solder and the connections are VERY stiff. Make sure you have them fully seated or you will burn up the connectors.

If you need a high current anti-spark connector that's what I would go with.

You can also use 8mm bullets. They are less expensive, much easier to solder and work with. However they are not a secure and are not anti-spark.

What the heck do you have pulling 500+ amps?

 

[Jerold]

What does anti spark do? Sorry if it’s obvious lol

In short the connectors have a path with a little bit of resistance (5.1Ω) that contacts first and slows the current draw. Basically the in rush current is dampened and drawn out over a longer period of time. Once the connector is fully seated it's has about 300mΩ resistance like any other connector. This post explains of how the connector works.
https://www.arrmaforum.com/threads/first-time-speed-build.58923/page-4#post-907433

This is what happens if you don't seat them completely. All the current went through the Anti-spark leg of the connector and it ... shall we say it got a bit hot.

What the heck do you have pulling 500+ amps?

It's for the portable welder on my TRX-4. I build them just like the full scale rigs.

Just kidding. This is an Arrma Limitless with a Castle XLX2 built for speed runs.

 

[Greywolf74]

Thats an impressive current spike

 

[WickedFog]

Thats an impressive current spike

Yeah it is!

 

[Jerold]

Thats an impressive current spike

It's that last bit off Juice I give it. Lots of revs and load on the motor. It would be lower if I had more space.... Or I was a better driver.

 

[Beamie]

Actually, if you don't buy Amass brand, you can get some really crap ones. I have some off-brand XT60's that I bought that are some cheap Chinese ones. They melt just by me showing them the soldering iron. Amass ones withstand a lot more heat.

You will be able to stuff 8awg into the EC5 I think, but I would go QS8's myself.
https://www.amainhobbies.com/protek...8M_CpmQ76NyD0IrUvHQgPnyGfX9OWv4RoCO_sQAvD_BwE

I first wrote this rrply on this thread, https://www.rctalk.com/forum/threads/what’s-the-best-battery-connector.137741/post-1375495
I guess no one here, chatting on this thread, ever experienced a motor drawing more amps through it that made the connector melt or get very soft. That a potential fire hazard.


We're spending too much money and time in our RC's to see it go up in smoke. I'm just trying to highlight the points and not teach a class.


The Speedrun Guys can tell you that. The better the connection the better the flow of electricity through the circuit.


Actually, little to no connection is the best.


Some people are more anal about there wiring job then others. Depending on the project that I'm doing at the time, I can be very anal.


QS10 or QS8 connectors plating are better than other connectors just like RJ45 AMP connectors are for CAT 5 - 6 ethernet cables.


How many of you are in the IT field? If any of you are, then you'll realize that a cheap RJ45 connector can rust, oxidize, and short when exposed to high humidity, but an AMP RJ45 connector hold up a lot better in high humidity than others. That's why they're so much more expensive and rated very high up on the list.


QS10 => QS8 connectors are used in boats, scale boats, that is. That's where it is the most popular.


XT90 are my main connectors I use for 4S - 6S projects. I use XT60 connectors for 2S - 3S Mods and Upgrades unless I'm running a larger pinion for a Speedrun. Then I mive up to XT90


You know AMASS do make and sell XT150 connectors that are a lot cheaper than the QS10 => QS8. Basically they are bullet connectors.


Just make sure you use the right size wire, most important, then the right connector or adapter , and a good silver solder job for the load you're putting on your electronics.


https://top5best.com/qs8-connector?...MTos2x4wteSUejTNIHcZ1OaYryCwsx-YaAr7EEALw_wcB

 

[WickedFog]

I first wrote this rrply on this thread, https://www.rctalk.com/forum/threads/what’s-the-best-battery-connector.137741/post-1375495
I guess no one here, chatting on this thread, ever experienced a motor drawing more amps through it that made the connector melt or get very soft. That a potential fire hazard.

Anyone that got into RC in the '80's experienced this. Tamiya connectors were kinda the norm, and if you went with a decent motor, they melted. I have not had that happen with any of the connectors I use today, but I tend to use the correct connector for the job, or at least I try to aim for a bit of overkill when picking my connectors.

 

[Jerold]

We're spending too much money and time in our RC's to see it go up in smoke. I'm just trying to highlight the points and not teach a class.

You make an excellent point. If you can't afford the proper connector you probably can't afford the car you're putting on.