A few questions...

[jasonb751]

I have been vaping off and on for about 6 months, but have now been completely off analogs for about a month. I just recently got into rebuilding, and have a technical question.

A little back story about me, I have been an electronics technician for 20 years, and completely understand all things electrical and know what is safe and what isn't.

Now on to my question. I built a dual 26g Micro coil on my Igo-w at exactly .5 ohms. One thing I notice is the mod gets warm while chain vaping. I have that rda on a v2 magneto and purple ifest 35a battery. Do you guys think it is just heat from the rda getting the mod warm, or do you guys think the battery could be getting warm? I know at .5 ohms I am nowhere near the maximum amperage of the battery.

What do you guys think?



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[Flaggonmalley88]

I have no idea, I am new too, but I just had to say MMMMMM DONUTS!!!

 

[Butters80]

I think if it heats up that much you might slow er down a bit. Even if one of my regulated mods gets a bit warm from my topper I set it aside and grab a different setup to let it cool. It's hard when you're getting a great vape though.

 

[Doghead]

I think your chain vaping and the cap is getting warm. mine gets warm pretty quick with a 1 ohm single. I'd say your fine. Of course, if something blows up, I could be wrong. But I'd think those coils are just putting off some heat.
And congrats on kicking the stinkies!


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[DKP#]

The mod, switch, and battery all have resistance which becomes more significant with lower coil resistances and higher currents.
Check the combined voltage drop of all three by checking mod output voltage no_load and under_load to calculate the resistance and power dissipated by them.

With a 0.5 ohm coil, a 0.05 ohm mod/battery/switch resistance will be using about 10% of the total power.

 

[Karltinsly]

How do you measure voltage drop under load (said the noob)?

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[DKP#]

How do you measure voltage drop under load (said the noob)?

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Measure the voltage at the coil when it's being fired. (V_load)
Measure the voltage with no coil attached (V_no_load)
The difference between these two is the voltage dropped (lost) by everything but the coil.
V_loss = V_no_load - V_load

Calculate the current with the voltage under load at the coil and the coil resistance
I = V / R
I = V_load / R

Multiply the current by the voltage loss to find the power loss
P = I * V
Power_lost = I * V_loss

Hope this made sense.

 

[Karltinsly]

Yup. Thanks!

 

[classwife]

Moved to APV Discussion from the Modding Forum

 

[TheBeardedMann]

After chain vaping and you notice it getting hot, immediately take out the battery and feel that. If that is getting super hot, you might have problems. If not, it's just your coils heating that top cap.

 

[twgbonehead]

After chain vaping and you notice it getting hot, immediately take out the battery and feel that. If that is getting super hot, you might have problems. If not, it's just your coils heating that top cap.

This ^^^.

It's not unusual for the base of the head to get pretty warm when vaping with that kind of coil setup. But if any other part of your mod is getting warm you either have a bad contact, or you're overtaxing your battery.

 

[jasonb751]

The battery isn't getting hot by any means, just a bit warm to the touch.

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