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3s Lipo connecters good enough for modded stampede?

Lipo batteries stampede overvolt

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#1 MagnusBuildsComputers

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Posted 19 October 2016 - 04:12 AM

Hi nerfers!

 

So I was getting tired of the weight and danger issues of running 10 AA batteries in my modded stampede and decided that I was going to make the switch to lipo. I've done some research and apparently some connectors for lipos will not work well and light on fire when used with high drain Nerf guns, such as the stampede. My question is, will the connecters that come stock on this lipo (they are called JST-XH connectors) be sufficient in a overhauled stampede? (Don't worry, I've rewired my stampede with 16AWG silcon wire, so no problems there)

Thanks

-Magnus

 


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#2 shandsgator8

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Posted 19 October 2016 - 05:39 AM

I think the JST connectors refer to the balancing wires, not the "main" wires.


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#3 MagnusBuildsComputers

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Posted 19 October 2016 - 06:54 AM

*facepalm*

Sorry about that, my bad, but will the connectors provided be good enough?


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#4 DjOnslaught

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Posted 19 October 2016 - 08:03 AM

*facepalm*
Sorry about that, my bad, but will the connectors provided be good enough?


If you know the draw of your modded stampede, you should be able to find specs on the connector on the lipo either threw the manufacturer of the batteries website or by posting a picture of the connector on this thread and finding out if it is a XT60 or something else and research it from there.
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#5 Aeromech

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Posted 19 October 2016 - 02:29 PM

As stated, the JST connector is the charge wire connection, not what is actually supplying power to the system. The XT60 connector, which should provide power to the system, from what I have heard, is a hobby king specific connector, so if you do choose to purchase this battery, you might want to see if they sell matching connectors to go with it. I ended up cutting off the connector it came with and went with properly rated Molex connectors you can pick up from Radio Shack.

 

Zooming out for a second... you mention some connectors like to light themselves on fire when used with Lipos. Yes, this is true, if you push too much energy through something that is typically the result. So unless you have a basic understanding of electricity, you really shouldn't be messing with this stuff. I recommend this wonderful website: http://hyperphysics....ase/hframe.html but really if you google around for basic circuits and electrical laws you can find all this out for yourself, perhaps I take this for granted with an engineering background. If all else fails, look for connectors that are rated for the current draw at the voltages your motor is pulling (basically, calculate the power your system is pulling and see if the connectors are capable of supporting AT LEAST that number of watts). This means you'll have to invest in a multimeter. They're like 5-6 bucks at harbor freight.

 

However, the argument of weight reduction is more or less invalid with your battery selection. One AA is roughly 23g. 10 batteries * 23g is 230g. The LiPo you've selected is 346g according to the datasheet. So the weight of the replacement LiPo is 50% heavier than your current power supply, peripheries excluded. It's only a 1/4 pound difference, but hey weight is weight.

 

TL;DR Get a multimeter, do math.


Edited by Aeromech, 19 October 2016 - 02:31 PM.

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#6 MagnusBuildsComputers

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Posted 22 October 2016 - 02:23 AM

Right, thanks for the advice!

Stampedemastarace4thewin


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#7 custom3dnerf

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Posted 22 October 2016 - 09:16 AM

It really depends on personal preference, I prefer Deans or EC3 over XT60 simply because they're easier to solder ans assemble. Personally, I think XT60 would be easy to reverse plug in, so I don't use them. Whatever floats your goat though.


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#8 DjOnslaught

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Posted 23 October 2016 - 02:26 PM

It really depends on personal preference, I prefer Deans or EC3 over XT60 simply because they're easier to solder ans assemble. Personally, I think XT60 would be easy to reverse plug in, so I don't use them. Whatever floats your goat though.


How when the ends are totally different on the xt60 on is flat and 1 have a triangle on it. You can't plug it in backwards at all.
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#9 MagnusBuildsComputers

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Posted 31 October 2016 - 07:36 PM

Nope, the connectors on the XT60 will go either way, the triangle is just to indicate it. 


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