Dual Coil iClear 30 1.8 ohms - voltage?

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PBOB

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Good afternoon all!

I bought an iClear 30 1.8 ohm and am attempting to find the optimum voltage (or range of voltages). I am using a eGO C Twist 650 mah battery. So is the 1.8 ohm the total resistance for the whole or is that per coil? Or am I even asking the correct question. I am using a voltage chart I found online and cannot figure this one out.

:unsure:
 

jSquared

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Don't ignore the numbers either!

1.8 ohms is the overall resistance you get from running two 3.6 ohm coils in parallel. The voltage chart you're using won't be much help with dual coils - you can push them to much higher voltages than single coils. The advantage of a dual coil setup is that you have twice the heating area of a single coil and, therefore, you get more vapor. If it's more heat or "kick" you're after, you're going to have to crank up the voltage.

JJ
 

vicflo

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yeh 3.7 ÷ 1.8 = ~2 amps which is roughly the sweet spot for your average vaper... but dual coils would divide the current to 1 amp per coil.

so to elaborate on previous posters for you and whoever else reads.

Going by the chart with dual coils: You essentially find the corresponding power level for the battery voltage and your atomizer resistance on those charts and then cut that power level in half... or to make it simple on yourself just look up the numbers for 3.6ohms (double your dual coil resistance).

Just keep in mind the 3 amp limit of the twist if you ever decide to get a 1.6ohm or lower dual coil. Getting decent throat hit from normally low TH juices like fruity or low nic ones will take a lot more voltage (4.2+ usually). So keep that in mind if your battery life and longevity is important.
 

jSquared

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Amps have nothing to do with the "sweet spot" - thats watts! The mysterious "sweet spot" is said to be between 6 to 8 watts for the average vaper. Now, let's say I like to vape at 7 watts. I can get there any number of different ways:

1.5 ohms @ 3.24V = 7W (2.16A)
2.0 ohms @ 3.74V = 7W (1.87A)
3.0 ohms @ 4.58V = 7W (1.52A)

You can see that, as the resistance of my atomizer increases, the current draw (in amps) decreases. Lower resistance atomizers will allow you to get higher wattages at lower voltages, but put more strain on your battery in the process.

Also, the Twist has a 2.5 amp limit (not 3.0 amps), but, in reality, eGo batteries don't like being pushed quite that high. Perhaps that is what you meant when you were talking about 2.0 amps being the "sweet spot"?!

JJ
 
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InTheShade

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LOL, what a lot of numbers and math lessons. All valid, some good info - but...

Just start low, turn up your twist until the taste is right for you. It's all very well looking at charts and calculations to get a starting point, but honestly, just start at the lowest setting, vape a bit, turn it up, vape a bit more and enjoy it.
 

TafkanX

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I run mine at 13-13.5W or about 5.3V depending on what mode I'm using as they seem to give me the best flavor/vapor ratio (haven't run the math, but going off of my taste buds they seem roughly equivalent). That seems a bit higher than what others run it at though. YMMV.

Edit: So I did the math and it seems these ratings are very close. 5.3V / 2.1Ω = 2.52A => 5.3V * 2.52A = 13.36W (approximately). Go taste buds!
 
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Katya

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A 1.8Ω dual coil is actually two 3.6Ω coils running in parallel. So, even though the combined resistance of the atomizer reads 1.8Ω, you are dealing with two 3.6Ω coils so the wattage should be calculated accordingly. If you put a 1.8Ω coil on 3.7v, you'll get 7.6W of power--very high, indeed, for a stock atty. A 3.6Ω coil on 3.7v will get you a paltry 3.8 watts--that's pretty much in the unvapeable territory... However, a dual coil will produce more vapor because with two coils you have twice the surface area to vaporize the e liquid.

So, you really should use dual coils at much higher voltages than single coils require, but there is a catch. If your PV can't supply the amps required, and you can't change the resistance, of course--your voltage will drop.

I'm a low (moderate) wattage vaper, so I can use the Aspire at ~4.2-4.6 volts (roughly 5-5.7 watts). I feel that the increased vapor production makes up for the lower wattage.
 

Katya

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I run mine at 13-13.5W or about 5.3V depending on what mode I'm using as they seem to give me the best flavor/vapor ratio (haven't run the math, but going off of my taste buds they seem roughly equivalent). That seems a bit higher than what others run it at though. YMMV.

Edit: So I did the math and it seems these ratings are very close. 5.3V / 2.1Ω = 2.52A => 5.3V * 2.52A = 13.36W (approximately). Go taste buds!

Yeah, but you need to calculate your wattage based on 4.1Ω resistance of individual coils, not on the 2.1Ω resistance of the atomizer. :)

You're actually vaping at 6.7 watts. ;)
 

dice57

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Personally I vape at the higher end of things. I kick it at 15 watts mostly. Sometime I take out the kick and vape in the low 30 watt range to test out my builds and wicking. But vaping at higher watts comes with a price, more juice is consumed and you go through batteries much quicker.

With a twist, max power shouldn't be a real concern, and finding the taste that's best for you will be just a matter of cranking it up or down till you find what you like. Pretty simple really. It either taste good or it doesn't. If you start to get a slight burn taste just turn it down.
 

dice57

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Yeah, but you need to calculate your wattage based on 4.1Ω resistance of individual coils, not on the 2.1Ω resistance of the atomizer. :)

You're actually vaping at 6.7 watts. ;)

Not to disagree, but yah I disagree. I'm kicking at 15 watts, if I have a dual coils you are saying I am actually vaping at 7.5 watts. per coil. well that makes sense but I still have a total watt output of 15 watts 7.5 + 7.5 = 15. So what am I vaping at? And then I will swap out a single coil atty, my setting is still the same 15 watts and lo and behold the vape is the same temp and consistency as the dual coil set up. Sure each of his coils may only vaping at 6.7 watts but times 2, that's 13.4 watts total. You can't just leave the equation half solved. If I am using two blow torches at 1500 btu's focused on one item I am burning a total of 3000 btu's. If I have two outboard engines on the back of my boat that are 75 hp each, I am not running at 75 hp, I am pushing 150 ponies, otherwise why would I bother if one engine worked as well as two.
 

Katya

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Imagine you're vaping two 3.6Ω atomizers attached to the same battery--at the same time. One vapes at 7.5 watts and the other also vapes at 7.5 watts. Is your vapor hotter because you're vaping two attys at the same time? Of course not. You get more vapor, and your battery will have to work twice as hard and supply more amps, but the wattage (heat, power) will not change.

Let me give you another example--if I pour 220 degree boiling water on a tea bag from two different kettles, is this bag getting 440 degree water? Or is it still 220 degree water--just twice as much of it?

Of course, your PV doesn't know that it's dealing with two coils and responds to the Ohm reading of the atomizer, thus you're getting a reading of 15 watts.

If you would like, I could explain it in terms of physics and the Ohm's law.
 

AttyPops

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Yep, watts are divided per coil. So with dual coil you need 2x the watts.

Think about WHERE you are talking about watts. From the Kick's perspective...it's 15 watts supplied to "the load". It could be an e-cig, a light bulb, a microwave oven. It supplies 15 watts.

However, from the COIL'S perspective, it get's 1/2 the available watts and the other coil gets the other half.

So it's all a matter of perspective.

With dual coil, just double the ohms and look up the voltage on the chart. However, you'd actually NEED double the watts that you see in the chart. Also, people run DC stuff cooler than normal single coils...so you can lower the voltage/watts a bit.

The good news is you can still use the chart...just double the ohms first to look up voltage.

The other good news is that you now UNDERSTAND more about WHY it works when you see the math. The HOW it works is just start low and turn up voltage until you are happy. The WHY requires knowledge and understanding. It's OK to have that too.
 
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