Fogger V4 (First Edition) Help

[timastyle]

I got the V4 when it first came out and I've been extremely happy with it overall on my Provari. The setup is straightforward and my builds have been in the 1.2-1.5 ohm range with 30 gauge wire and cotton wicks.

Well yesterday, I got my Hana Clone from Illvapes. While the device is working great, I have to be very careful at how long I hold the fire button with my current build at anything over 20W. My current build is a dual 28 gauge coils (think it was 10 wraps each around 5/64 drill bit) at 1 ohm and cotton wicks. I thought with the 28 gauge and the number of wraps that it would take some time to heat up the coils so I would be able to keep it going longer, but if I hold it for more than 1-2 seconds per hit, I will start to get an almost dry burn taste. Kind of like what it tastes like right before you need to refill your rda. When I get this hit (usually after 3 consecutive hits), I have to let it sit for a little bit before I fire it up again. It may be that my build isn't that great and at the higher wattage, it's exposing it seeing as I've never gone about 15W on my Provari until now. Any suggestions/fixes would be greatly appreciated. I have 28 gauge and 30 gauge wire, so I was thinking maybe a twisted 30 gauge may help slow down the heat up process.

 

[vapdivrr]

Yes, higher wattages will bring out all slight flaws for sure. Although i don't use 28g wire for my plus 20 watt dual coil builds, it should work. I do like using 26g or like you said twisted 30, or even twisted 28g but as you do this, you will increase lag time or decrease resistances. I have the best results with coils in the 6 to 7 wrap range instead of the lag time. I think that mainly the issue is wick density, wick placement, or wick lenght rather the wire gauge . Try the twisted wires and see, maybe this might help, if not you need experiment more on the actual wicks

 

[illitirit]

i would really give rayon (cellucotton) wick a try. It holds so much juice, it will never burn. Its all i use now.

 

[mightymen]

Have you tried to add some extra cotton or possible thinning the wicks in the channel could be choking for juice.

I've been running .7 ohms past 20 watts off and on without any dry hits with 30 ga wire for the last three days, I have it loaded with extra cotton.

 

[Tbev]

Your having wicking problems, wicking is harder to get good at then building coils.
Use less wick. See the fogger v4 threads

Sent from my Transformer TF101 using Tapatalk

 

[timastyle]

Illitirit - I may give it a try but cotton is all I have at the moment.

Mightymen - which version of the V4 do you have? The one I have requires less cotton.

Tbev - I use very little to begin with. I tried rewicking with even less and still get dry hits (almost burnt taste). I have been able to get up to 24.5W without a bad hit and able to hold it longer. I'm in that thread and haven't had a problem until now but I also didn't try getting higher than 15W with my Provari previously.

 

[timastyle]

So I did a new build using twisted 30 gauge with 8 wraps around 1/16 bit. It came in at 0.5 ohms. Think the thinner cotton wick has helped but I'm not completely satisfied. I've never built one this low and it's hitting hard and a little harsh for my liking. Tomorrow I'm going to try just straight 28 gauge around 1/16 and see if I can't get the resistance higher.

 

[Tbev]

If you start leaking from the afc your using too LITTLE cotton, if you haven't been there yet your still using too much.

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[mightymen]

Keep in mind the DNA 20-30 will not regulate down only up.

New Battery volts 4.2 X 4.2 = 17.64

17.64 divided by .8 ohm = 22.05 watts, it won't go below the battery voltage.


17.64 divided by .5 ohms = wattage, do the math. IMO: this is why your getting harsh hits, Hold the button for shorter periods of time until your battery goes down.

Right now my Sigelei 30 has a .7 ohms coil and is set for 7 watts, when I hit, it goes to 17 watts that's because my battery has around 3.40 volts left, now if I set it to anything higher then 17 watts it will regulate. It was going higher when it was a fresh battery 4.2 volts.

 

[Tbev]

People do it, you just have to get your wicks right, rayon helps.

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[Binigo]

I have a Fogger V4 with the original base, and the V4.3 with the biggest base (of the 22mm series). The V4 (original base) is smaller and needs much less cotton than the V4.3. I've tried wicking the OG V4 exactly like my V4.3 and dry hits galore... cellucotton or organic cotton wick.

For the smaller base make sure your cotton above the channels is loosely packed. If it's packed tight, unscrew your chimney and trim. For both, I have cotton lightly sitting on top of the channels. I've tried putting cotton in the OG's channels and it does not work for me at all.

You can also try 5/64th's if your comfortable with that diameter coil not shorting on the chimney. Larger coils give you more time before a dry hit. I tend to do 5/64th's on the OG and 3/32nd's on the V4.3. I'd post pics but won't be home for the next few days.

 

[timastyle]

Thanks for all the tips. I actually got up this morning and have been hitting it since and no issues. It's not harsh to me anymore and no dry hits. I think my first build with the larger diameter coils (5/64th) was getting too much cotton in the channels and not providing the wicking at the pace I needed it. With the 1/16th coils, the cotton is just enough to where I can put it in the channels (again, OG Fogger V4 here) with the wick only half way down and it's hitting great.

I think my main issue with the harsh hits were that 1. the cotton wasn't saturated enough to start, 2. the longer hold period at 30W is new to me, and 3. I accidentally ordered a 80PG/20VG blend where I normally do the opposite. I've got a new batch coming soon so I'm sure the juice problem will be solved.

I'm still going to try another build with just straight 28 gauge around 1/16th bit to see if I can't get the ohms up a bit more to help make the hits a bit less hot. While I'm not having the harsh hits anymore really, I can tell that if I hold the fire button a little too long or do more than 3 consecutive hits in a row, it gets pretty hot.

 

[Tbev]

Small diameter coils =less cotton, you're right.

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[timastyle]

OK, so I'm back to having problems and now I'm thinking it's the juice itself that isn't able to handle the higher wattage and giving off a burnt taste. I did a new build (twisted 30 gauge with 10 wraps each) coming in at 0.8 ohms. I had a new juice (Vaperite strawberry cheesecake at 100% VG) that I used to fill up the tank. I vaped away at 30W without any problems and once the juice ran out, I put one of my older (3 weeks) juices (MBV Cheesecake at 80PG/20VG) and started vaping. It wasn't but a few hits before and got the burnt taste again. I had to turn down the wattage to 20W to be able to not get the burnt taste.

I was under the impression that the higher PG would flow more freely, thereby causing less of a chance of dry hits vs. the 100% VG. Am I missing something? Can it be that the flavor itself or the blend? It's just confusing.

 

[Tbev]

It's not that big of a difference between juices, did you rewick or did you just add the new juice once it got low?

 

[timastyle]

No. Once it got low, I just filled it back up. There was no constant burnt taste either.