Eleaf GS Air Fan

[Nanny22]

Bwahahahahaha!!!! I have the same problem!

Congrats, Nanny!

This is fun...

I'll be.... I never win anything, either...

And, who took the Reo Grand????

I'm betting that was one of the FIRST things to go!!!

 

[Katya]

Here's the question: If one of the dual coils has s__t the bed, as we say in philosophy seminars, I would have expected 3 to 3.2 ohms, or something like that.

I'm not an expert, but I have a feeling that you now own a single-coil atomizer. Perhaps those two coils were not both 3.0Ω each, as one would expect.

No idea--just speculating.

 

[GranFumador]

Sure does...

Congratulations Katya!​

 

[IMRs]

Ohm's Outlaw

Help! Kelp! The sky is falling.
No, not really. I'm just in my normal confused state only more so than usual.
Here's what's going on. Nanny won a prize. I smiled. Katya won a prize. I smiled.
I picked up my 30w with the Ms on it—you know, the one that was working fine except for the very very warm vape—and it tasted funny. As in funny peculiar, not funny ha ha.
The display showed 2.5 ohms. I cranked the wattage down to 7.5. Of course that accomplished nothing but thumb exercise. Another puff, and it went to 2.9 ohms.
Took it apart, cleaned the AFC/base, reassembled, and it was back to 2.6 ohms.
Time for a new coil.
Here's the question: If one of the dual coils has s__t the bed, as we say in philosophy seminars, I would have expected 3 to 3.2 ohms, or something like that. How do the advanced electrical engineers in the club explain the sudden change from 1.5 to 2.5?
Just curious. I like to be able to understand my failures.

Edit: The coil was eleaf, not ft, has a chimney but no knurls. That's almost like wearing a tie-dyed shirt without cufflinks.

The coil wire is getting thinner from the heat, which raises the resistance (is the way I would explain it). Time for a new one is the answer, G . I quit counting how many burnt up on me. This is why I'm going to start rebuilding again. I've gotten lucky several times and some coils lasted about a week.

 

[IMRs]

Here's a pretty cool analogy...
A water analogy-- the pipe is always full of water, and for the same pump (battery), the pressure (voltage) is always lower the wider the pipe, which equates to more flow and a lower resistance.

 

[GranFumador]

Here's a pretty cool analogy...
A water analogy-- the pipe is always full of water, and for the same pump (battery), the pressure (voltage) is always lower the wider the pipe, which equates to more flow and a lower resistance.

I like your analogy. The question, at least for the squirrels in my head, remains:
If I had had two working coils, gunkage and all, that were like a pipe wide enough to provide 1.5-1.6 ohms of resistance, then one of them crapped out, shrinking the pipe so that the resistance went to 2.5... that would imply that the dead coil had diameter equivalent to ______________?

coil A, ohms=X
coil B, ohms=Y
(X+Y)/4=1.5 ohms
Remove X, leaving Y=2.5
This suggests the dead coil was 3.5 ohms. Possible, but likely?
Or...have I got the math all wrong?

 

[Katya]

I like your analogy. The question, at least for the squirrels in my head, remains:
If I had had two working coils, gunkage and all, that were like a pipe wide enough to provide 1.5-1.6 ohms of resistance, then one of them crapped out, shrinking the pipe so that the resistance went to 2.5... that would imply that the dead coil had diameter equivalent to ______________?

Don't even go there...

Those coils are never the stated resistance. Normal tolerance for a stock coil is +/- 0.2Ω--and that's for a good coil.

 

[IMRs]

I like your analogy. The question, at least for the squirrels in my head, remains:
If I had had two working coils, gunkage and all, that were like a pipe wide enough to provide 1.5-1.6 ohms of resistance, then one of them crapped out, shrinking the pipe so that the resistance went to 2.5... that would imply that the dead coil had diameter equivalent to ______________?

coil A, ohms=X
coil B, ohms=Y
(X+Y)/2=1.5 ohms
Remove X, leaving Y=2.5
This suggests the dead coil was 0.5 ohms. Possible, but likely?

You lost me. I only have a high school education and never took algebra (I'm old,I don't think we had it, back then).

 

[Kivrin]

I am completely ignorant about this subject! (But love, love algebra...thanks gran!)

But I did take a few of these apart and one coil sits higher than the other, thus has longer legs. Couldn't this be a factor?

 

[Bikenstein]

I like your analogy. The question, at least for the squirrels in my head, remains:
If I had had two working coils, gunkage and all, that were like a pipe wide enough to provide 1.5-1.6 ohms of resistance, then one of them crapped out, shrinking the pipe so that the resistance went to 2.5... that would imply that the dead coil had diameter equivalent to ______________?

coil A, ohms=X
coil B, ohms=Y
(X+Y)/4=1.5 ohms
Remove X, leaving Y=2.5
This suggests the dead coil was 3.5 ohms. Possible, but likely?
Or...have I got the math all wrong?

Close, it would suggest that the dead coil was 3.75. These coils are built stacked and the top one may be wider than the bottom coil. Resistors in parallel configuration don't add like they do in series.

 

[GranFumador]

Don't even go there...

Those coils are never the stated resistance. Normal tolerance for a stock coil is +/- 0.2Ω--and that's for a good coil.

Point taken. I'm just curious because similar things, jumps from around 1.5 to 2.5,
have happened for me three times. Each time it was an eleaf coil that came with a GS* tank. I suspect, but don't know, that these were an early production run for which the two coils did not (by design or accident) have nearly the same resistance. Otherwise, if one coil failed, we would expect the remaining coil to be in the 2.8 to 3.2 range. These events suggest that the tolerance was much greater than +/- 0.2Ω.

 

[LynnNC]

And that's exactly the way I understood it Kivrin...the coil on top has longer legs so less resistance so lower ohms.

 

[LynnNC]

When my coil failed that day, the ohm's went to 3.1 and stayed there.

 

[GranFumador]

Close, it would suggest that the dead coil was 3.75. These coils are built stacked and the top one may be wider than the bottom coil. Resistors in parallel configuration don't add like they do in series.

Thanks, Bike. I'm finally beginning to see the light, through a glass, darkly.
That would, with Katya's tolerance range, explain everything except the immortality of the crab.

 

[Katya]

And that's exactly the way I understood it Kivrin...the coil on top has longer legs so less resistance so lower ohms.

That's a possibility with rebuilt coils, but stock coils are made of NR-R-NR wires, so that shouldn't be a factor. Shouldn't being the operative word, of course.

 

[IMRs]

The mailman finally showed up and I got the mini 20. I'm a little disappointed because the increments in wattage mode are .5, so I'll end up using the voltage mode (I use my tubes in voltage mode, so no biggy ). It's unbelievably small.

Ms with my handy glow-in-the-dark tip
in case I can't find it.

M on top...
I got this from vapordna. Who is 'myvapors'??

 

[LynnNC]

The mailman finally showed up and I got the mini 20. I'm a little disappointed because the increments in wattage mode are .5, so I'll end up using the voltage mode (I use my tubes in voltage mode, so no biggy ). It's unbelievably small.

Ms with my handy glow-in-the-dark tip
in case I can't find it.
View attachment 461624

M on top...
I got this from vapordna. Who is 'myvapors'??
View attachment 461623​

Is it a genuine istick?
Never mind...I see it now! Sorry!! It's been one of those weeks.

 

[LostVapeMonster]

Thanks, LVM! Where've you been?? We've missed you!

Aaaaaaaaaaaaaaawwww!!!! Thank you Nanny.
My mom has been in the hospital following double bypass/valve replacement surgery. She's been having a rough go of it and has been in ICU for almost 2 weeks now. This past Friday, it was not looking so good and they had to put her back on the ventilator. So I've been kind of busy with that and trying to get some renovations done around my house.

 

[Bikenstein]

Resistors in series-

And that's exactly the way I understood it Kivrin...the coil on top has longer legs so less resistance so lower ohms.

The longer legs would give more resistance if they were not nr wire. Resistance in series is found by simply adding the resistors for a total. In parallel the formula is R1xR2/(R1+R2). If the resistors were made with equal values- 3x3+9, 3+3=6, 9/6=1.5. However 3.75x2.5=9.375, 3.75+2.5=6.25, 9.375/6.25=1.5 also.

Hope your Mom gets ok LVM

 

[Susaz]

The coil wire is getting thinner from the heat, which raises the resistance (is the way I would explain it). Time for a new one is the answer, G . I quit counting how many burnt up on me. This is why I'm going to start rebuilding again. I've gotten lucky several times and some coils lasted about a week.

On the other hand, my coils get lower... On the Vapeonly BCC of the picture, a 2.1 ohm head ended up as .9 before burning. Maybe alcohol degrades nichrome...