Bottom End OHM limit for VVGrand?

[dodari]

I'm wondering what the bottom end Ohm limit for my new VVGrand would be? I don't want to fry the VV?

Looks like a 28 ga.-- 11 to 12 wrap on 16ga. needle oughta put me in the 1.2 to 1.4 Ohm range? Maybe?

Anyways, looking for advice and also what the VV limit is.

Thanks.

 

[hildicat]

13 wraps of 28g on a 16g gets me right to 2Ω. Perfect for me on the VVG at anywhere between 4.2 and 5 volts (depending on the juice).

I'm not sure of the amp limit of the chip, but I'm pretty sure I've fired a 1.2Ω coil on the VVG at its lowest setting. Meter first, but you should be fine.

 

[Rhapsodies Fire]

I don't understand the mathematics involved...for the most part. But I do know there is a 15 watt maximum power output. So if your resistance is too low for the voltage you have set, your mod just won't fire. It won't fry the chip...it just won't work. Best thing to do is start with your voltage set as low as you can go, then work up from there. I found out the hard way when an old atty of mine was dying a slow death....the resistance kept dropping unbeknownst to me. At one point, my mod just stopped working. I checked my batteries, the on/off switch, checked to make sure the atty was seated properly and it was....then I checked my atty and found it had dropped to 0.5ish. That's when the lightbulb went on. I put a new atty on and it worked beautifully. I'm sorry I don't know what the exact numbers are, but I've never been worried about dropping below it.

 

[pdib]

I've read in another post that there's no point in going below ~2Ω. That's about the lowest resistance that will benefit from (not cancel out) the full range of the variable voltage. 2 ohms at 5.47 volts = 15 watts (rather 5.47v @ 2Ω)

 

[JC Okie]

You'll get better battery life if you wrap a little higher ohms coils and turn the volts up a little instead of wrapping really, really low ohms and having the volts turned all the way down.

 

[redeyedancer]

I've read in another post that there's no point in going below ~2Ω. That's about the lowest resistance that will benefit from (not cancel out) the full range of the variable voltage. 2 ohms at 5.47 volts = 15 watts (rather 5.47v @ 2Ω)

I concur nothing lower then 2 ohm of course you can run a lower ohm coil .Why one would want to puzzles me

 

[dodari]

hildicat, R-Fire, pdib, JC O,

Thanks for the help. All responses have been very helpful.

I think I'll try to hit about 2 to 2.1 Ohms now that I have some 30 ga and 28 ga wire just received this afternoon late. I'll try the 30 ga. and try to do a real tight micro on 16 ga. needle. Knowing about the 15 watt limit is good.

Also, from another thread, I can see I have been leaving my cotton wicks way too long, had flooding. Trimmed it down and it works much better.

Thanks y'all.

Added edit: Thanks Redeyeddancer, now I know to stay at 2 Ohms. Great, thanks.

 

[FeistyAlice]

I concur nothing lower then 2 ohm of course you can run a lower ohm coil .Why one would want to puzzles me

The reason I've run lower than 2.0 ohms on VVG is because all the others needed rewicking except for the 1.6 and I was in a rush.

1.6 on lowest setting VV, juice didn't taste a good as on mechanical even though the voltage was lower. Maybe just my imagine.

Feisty Alice

Sent from my SPH-L900 using Tapatalk 2

 

[supertrunker]

i'm liking this more daily! 4 wraps = 2 Ohms! How cool! Same with dual coil on the grand is unsurprisingly 1.

No need to ever alter the way i make coils - Bone idle paradise! unbeatable!

T