Older Folks and Vaping Front Porch - Part 2

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FlamingoTutu

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The answer is different for a variable wattage device vs. a mech mod.

For a variable wattage device, power in is equal to power out, with some loss for efficiency of the circuitry. If you are putting out 30W, and all of that power is being drawn from a single battery, then that battery must supply 30W of power, plus some overhead. Let's call it 36W figuring a safe 20% efficiency loss. A mostly discharged battery will put out around 3.7V. For a regulated device, which is always trying to draw a fixed wattage, you should calculate A based on a discharged battery, because A will be highest when V is lowest for a fixed wattage. Since W = I * V, we have I = W / V, or I = 36 / 3.7, which is just under 10A. This is right on the limit of what is safe. I think it's probably OK, but I would prefer to have a 15A or 20A battery, just to be on the safe side. If you were trying to put out, say, 50W, then that would be 60W with efficiency loss, and you'd need 60/3.7, which is a little over 16A. So, you'd still be safe with a 20A battery, but would be over-discharging a 10A or 15A battery, which is unsafe.

On the other hand, if you're only drawing 20W, call it 24W with overhead, you'd need 24W/3.7V which is 6.5A. Then, a 10A battery would be perfectly safe.

If your variable wattage device is powered by two batteries instead of one battery, the power is drawn equally from both batteries. So, halve the above A numbers. All of the above is pretty much true for the whole range of resistances, though you might not be able to actually set the device to higher wattages if you have a resistance that's too high. This will vary from regulated device to regulated device.

For a mech mod, the battery will always try to supply between 3.7V and 4.2V (3.7V when it's drained, and 4.2V when it's fully charged). The amps that are drawn from the battery will be inversely proportional to the resistance, since I = V / R. Calculate all I and W values figuring a fully charged battery, because that's where A will be highest. For a 1 Ohm coil, and a battery producing 4.2V, I is 4.2/1 which is 4.2A (4.2V * 4.2A is a little under 18W). For a 1.2 Ohm coil, 4.2/1.2 is only 3.5A, and will produce a little under 15W. If you go all the way down to 0.5 Ohms (not recommended for a Kayfun), you'd be pulling 4.2V/0.5 Ohms which is 8.4A, and is a little over 35W.

So, my recommendation would be to get at least 20A or better continuous discharge batteries. For lower wattages, you're probably safe with a 10A battery, but what if you decide you want more wattage? You'll probably forget that your battery can't handle it, and end up over-discharging your battery. Baditude has a blog that lists safe ratings for a variety of batteries:
Baditude Battery Basics Blog
Pretty much any of the batteries he has in bold are good choices. Be sure to select 18650 batteries if that's what your device needs.

Hope that helps!

Found who wrote the saw manual!






I am kidding Sloth. :) Brain could be better and will take me a little time to read it which is a good thing.
 

MikeE3

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MikeE3

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MikeE3 You wouldn't happen to have the name of a USA store selling the p3 ?
Cant seem to find any doing a search.

These are the 2 closest to me that show on the Provape vendor's list although I've not visited either one.
ProVape Store Locator

Worlds Finest Vape Shop 18 miles
132 West Forth Street
Bridgeport PA 19405
USA
Phone: 484-219-4184
Email: worldsfinestvapeshop@gmail…
Website: www.worldsfinestvapes

Lehigh Vapor - 31 miles
559 Main St.
Bethlehem PA 18018
USA
Phone: 484-429-6978
Email: info@lehighvape.com
Website: Lehigh Vape
 

DavidOck

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AFAIK, no stores have the Provari P3 yet, so no surprise on the null search.

And yes, within its capabilities, regulated mods will try to deliver the set wattage no matter what the resistance. It's possible to build a coil that exceeds those capabilities, in either direction. The amp limits of the regulator should then kick in to limit the power output.

That's one of the reasons most of us with VV/VW mods put them in VW mode, so they'll automatically adjust the voltage no matter what value coil we put in. Of course, it's also true that different flavors may taste better at a different setting, so it's not "set and forget."
 

MikeE3

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Is a reg mod always trying to maintain the wattage you set it to regardless of the resistance ?
If I'm getting it right.
Trying to be safe around 1-1.5 ohms waiting on a 30w mod and I would like to think that or a future 20 watt mod will do me. The 0.5-1 ohms is just a safety Q in case i wig out and read the ohm meter wrong or something else.

Einstein once said - never memorize anything you can look up. Don't know if that's true but a math professor in college said that - and I took it to heart. So I keep this link handy and have an ohms laws calculator app on my iPhone.

Ohm's Law Calculator

At 30 watts you can go down to a .5Ω coil (drawing ~7.5 amps) and not exceed a 10 amp draw. Actually you won't hit 10 amps until the Ωs get down to ~.3Ω.
 

FlamingoTutu

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Yep - a verticle coil can be a really nice vape. You'd think it would flood with the chamber packed w/ wicking - but it doesn't.


Hope I snipped ^^^ correctly. Nice photo! What is the advantage of a vertical coil? Abbreviated version for utter dummies is fine. Warmer vape, better wicking... ?
 

PapaSloth

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Is a reg mod always trying to maintain the wattage you set it to regardless of the resistance ?
If I'm getting it right.
Trying to be safe around 1-1.5 ohms waiting on a 30w mod and I would like to think that or a future 20 watt mod will do me. The 0.5-1 ohms is just a safety Q in case i wig out and read the ohm meter wrong or something else.
There are different types of regulated mods (variable voltage, variable wattage, and now variable temperature). My comments mainly apply to variable wattage, where the mod IS trying to maintain the wattage you set regardless of resistance. Variable voltage and variable wattage can be made to do the same thing, but a little math is involved to adjust when the resistance of a new coil is installed in the atty. Variable temperature is new (DNA40), and will use changes in the resistance of the coil due to heat to determine the temperature of the coil, and will dynamically adjust wattage to keep the temperature of the coil within a limit that the user sets.

Since your devices are both variable wattage, it doesn't matter much whether you build to a 0.5 Ohm coil or a 1.0 Ohm coil. 30W at .5 ohms is the same power as 30W at 1 Ohm, it's just spread out a bit differently. So, the drain on the battery will be pretty much the same (excluding the efficiency of the circuitry).

Note that some variable wattage devices will only work with coils that are built above a certain resistance. That will be one of the specs on your device, and the maximum amp draw will be another spec.
 

gerrymi

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I like my kayfuns so much that I haven't been paying attention to what's new. Anything similar I should be paying attention to? No new Kayfun killers?

Both GrimmGreen and IndoorSmokers said that the Nautilus (with BVC's) had replaced their Kayfuns for daily usage.

Ah, yes. THAT is the reason I never got an istick. It don't have a replaceable battery :)

Well...2 things you could consider...cost and convenience...

Cost...in 2 (3?) years when the iStick's battery no longer holds a charge...you'll toss it out and get another (probably $25 by then) iStick...vs...in 2 (3?) years when the 2-3 18650's you're rotating in your mech mod no longer hold a charge you'll toss them out and pay $25 for 2-3 more.

Convenience...It is convenient to just change batteries when the 18650 in your Vamo is discharged.

But...it would be unusual to use up the 2200 mAh in the iStick in one day. So you just plug in it's microUSB each night before hitting the sack...and it will be ready in the morning for another full day of vaping.

BTW, several of my tanks have been in use for over two years. Presently only using one in that I'm 'converting' over to Nautili/BVCs.

10 minutes ago I replaced the BDC with a BVC. Same tank of juice, same PV, same wattage.

The vape quality is at least 2 steps better.

It's going to be hard to ever use the 7 or 8 BDC coils that I still have. How can I settle for great when superb is available?

Iffy and bigbells...I agree with both of your "philosophical principles.".

I, too, am "converting" my clearomizers and cartotanks over to Nauty's with BVC's...and...

I'm "converting" my VV V3's and MVP2's over to iSticks.

As you say.."How can I settle for great when superb is available?"
 

MattB101

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But...it would be unusual to use up the 2200 mAh in the iStick in one day. So you just plug in it's microUSB each night before hitting the sack...and it will be ready in the morning for another full day of vaping.

I hate to admit it but I would vape away 2200 mah is about 4 or 5 hours. Tend to chain vape a lot.

Sent while presently sitting on my .... watching mind numbing prattle on the TV. 257 Channels and nothing on.
 

Redruth

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Hi folks, I'm a total newbie. I've got a Vamo v5 which I'm just trying to get used to but already I think I'm going to love it.

Lost my brother in Feb due to his smoking analogs (is that the right word?). I've tried so many times to quit and failed but I'm really excited about vaping and already think I'm going to love it. Just dabbling at the moment. Working out how to use it and the technique is a bit different. First few tries I nearly choked myself.
Not very 'up' on the jargon lol but working on it, so please excuse me if I make a gaff. Look forward to getting to know new friends on here.
 

garyoa1

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Well, again. My experience with the naut and bvc. Lousy. Hate with a passion. Better than the regular coil but not by much. I have 4 tanks. Used 3.
All of them totally change the flavor of all my juices. Some still tolerable but some just awful. The last one I used for about a day and all of a sudden began to get a mouthful of juice with it.

Most clearo's I find work well. But I'm still stuck with the i30 since I get the best flavor and for me, it's ease of use just works for me.

Of course, YMMV, but for me they get a huge thumbs down.
 

PapaSloth

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Hi folks, I'm a total newbie. I've got a Vamo v5 which I'm just trying to get used to but already I think I'm going to love it.

Lost my brother in Feb due to his smoking analogs (is that the right word?). I've tried so many times to quit and failed but I'm really excited about vaping and already think I'm going to love it. Just dabbling at the moment. Working out how to use it and the technique is a bit different. First few tries I nearly choked myself.
Not very 'up' on the jargon lol but working on it, so please excuse me if I make a gaff. Look forward to getting to know new friends on here.

Hi Redruth! Welcome to the porch!

I don't have a Vamo, but I just wanted to say hello and to welcome you! I'm sure someone will be around pretty quickly who can answer your questions. Glad you dropped in :)
 

DavidOck

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Hi, Redruth, and welcome to both the porch and ECF.

Sorry to hear about your brother. I think all of us here wish vaping had been a choice 30 - 40 years back... I'd smoked for somewhere over 45 years, and once I found the right combo of nic level and flavor, was done with them in about a week. Hope you have an equally quick transition - and feel free to ask for info here and elsewhere on the forum.

Some models of the V5 Vamo need to coerced into the proper mode, whether you pick VV or VW. Mine, a KSD brand, was supposed to default to RMS mode, which is preferred. But it came in MEAN, which doesn't give a smooth an output, so not as nice a vape. Now, it's initially a tad confusing, as the process is a "toggle" - what the screen will show is the mode it just got put into.

Press and hold the small left button. For a LONG time :) First, it will show the battery voltage (not the set output voltage, but the current state of the battery). Keep holding. After about 10 seconds or so, it will display the mode. You can release the button then. If it says MEAN, let the display blank out, then repeat, so when it gets there, it says Output RMS.

What do you have on top of that Vamo :)
 

DavidOck

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Well, again. My experience with the naut and bvc. Lousy. Hate with a passion. Better than the regular coil but not by much. I have 4 tanks. Used 3.
All of them totally change the flavor of all my juices. Some still tolerable but some just awful. The last one I used for about a day and all of a sudden began to get a mouthful of juice with it.

Most clearo's I find work well. But I'm still stuck with the i30 since I get the best flavor and for me, it's ease of use just works for me.

Of course, YMMV, but for me they get a huge thumbs down.

Truth be told, I've yet to try one. With the continued uncertainty over the feds, I'm trying to keep everything in my arsenal to toppers I can recoil. A variety of glass, but all use single bottom coils. Rewound to my personal specs, with air flow bases.... and a bunch of KFs for serious vaping :)
 

3mg Meniere

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Yep - a verticle coil can be a really nice vape. You'd think it would flood with the chamber packed w/ wicking - but it doesn't.
Even though I cannot afford to buy vertical coils, I am vaping on one. Thanks, Mike. It really is easier, doesn't require a third hand for installation. Just stick the mandrel in the air-hole, and it holds the coil nice and straight and steady. Still breaking it in, it might have also resolved the leaking problem.
 

PapaSloth

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Found who wrote the saw manual!

521b7713c8561112ef000012_736.jpg


;)
 
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