Frustrated Newbie would like help With someone in Philly

[John D in CT]

OK. I'll make it simple for anyone to understand and put a rest to all this. Click on the link below. There are four measurement boxes (volts, amps, ohms, and watts). Plug in any two and hit "calculate" and it will give you the other two. E-ciggers usually know their volts and ohms so those are the two you most likely would plug in. See the resultant amps and watts. For purposes of ecigging, you generally want to be below 2.0 amps to protect your equipment. Watts is what burns your juice and there is a sweet spot for most eciggers. By trying different volt/ohm combos, you will eventually know what wattage you like to vape most juices. It's as simple as that. Next!

Ohm's Law Calculator

Hmm, just stumbled across this thread again, so what the heck, I'll just add what I refrained from adding five days ago:

Just as it's nice to know long division, or multiplication, and memorize the ol' "times table" (9 x 7 is 63, 7 x 6 is 42 ....) so you can do simple math in your head when you don't have a computer or calculator handy, I think it's just real handy to know that if you have a say 2.0 ohm single coil carto and a 3.7v constant voltage battery, that you can just do in your head that "let's see, 3.7 times 3.7 is around maybe 14 or so (4 x 4 obviously being 16), divided by two is around 7 watts".

To do that, you do have to know that volts times volts divided by resistance equals watts. But I just think it would be a real shame to have such an aversion to committing that simple formula to memory when you have really easy ones like vaping at 4 volts with a 2 ohm coil. If you don't know that V x V / R = W, you can't take advantage of the very easy 4 x 4 / 2 = 8. And to me, this is "understanding". not plugging numbers into a calculator.

I do like doing my own calculations when I can, or don't have a calculator handy. Figuring tips, dividing up a check, negotiating prices, figuring out discounts, stuff like that.

Here's a really cool math trick that I like to share; I came up with it when I was hanging a picture in my bathroom, slipped, and hit my head on the toilet:

In your head - what's 7% of 13?

Most people I ask just have their eyeballs immediately glaze over, but when you think about it, it's really easy. At some point, you've gotta multiply 7 times 13, so go ahead and get it over with. Seven times 10 (the "tens" column in "13") is 70, and seven times three (in the "ones" column of "13") is 21, so 70 + 21 is 91. Then, like so much else in life, it's all about where to put the decimal point. Is 7% of 13 = 91? No. Is 7% of 13 = 9.1? No. Is 7% of 13 = .91 ? A little less than a tenth; sounds right.

If encouraging people to do their best to understand simple mathematics and basic science makes me a flaming bunghole, then fine, I'm a flaming bunghole, and wear the title proudly. It's as simple as that.

Next!

 

[John D in CT]

Just had a fifty-five minute phone conversation with Steve, and promised him some posts/links:

Volts/ohms/watts:

"Variable voltage lets you be Goldilocks. She wanted her porridge just the right temperature. To get a variety of resistances of coils to just the right temperature, you need to be able to control the amount of volts that your device is delivering to it (please use only single coil cartomizers or atomizers unless you have a compelling reason to use two or more coils - you'll save battery power, and IMO get a better vape to boot). Different juices also want different amounts of heat, and there are variations among "nominal" resistances of any given device that variable voltage will allow you to compensate for.

[Simpler version: turn the knob to higher volts for a warmer vape, lower volts for a cooler vape, or to compensate for variation between "stated" resistance and "actual" resistance of a coil].

This can all be demonstrated by a very simple formula that related "Ohm's Law":

Volts time volts divided by resistance (rated in "ohms") = watts (heat) at/in the coil.

Vaping at 4 volts with a 2.0 ohm coil would give 8 watts; 4 x 4 / 2 = 8.

Consider the three heads in the Vivi Nova; 1.8, 2.4, and 2.8 ohms:

With a Joyetech eGo-C Twist, or any other variable voltage device, you can achieve any wattage you need to get a good vape, even if the "actual" resistance of the "heads" varies from the "nominal" resistance of the heads, which it almost always does.

I'd say that most people vape at between 4 and 8 watts per coil. Notice how 6 watts can be produced with a Joyetech eGo-C Twist (or any other variable voltage device) with any of those three atomizer heads. This obviously can't be done with a constant-voltage battery.

3.28 volts x 3.28 volts / 1.8 ohms = 6 watts

3.79 volts x 3.79 volts / 2.4 ohms = 6 watts

4.09 volts x 4.09 volts / 2.8 ohms = 6 watts

Again, a constant voltage device obviously cannot do this, so please do not buy one unless you MUST have a ciggie-look-alike".

Or with a Twist and a Vivi Nova with the 2.4 ohm atomizer head:

3.79 volts x 3.79 volts / 2.4 ohms = 6 watts.

4.09 volts x 4.09 volts / 2.4 ohms = 7 watts.

4.38 volts x 4.38 volts / 2.4 ohms = 8 watts.

In rounder numbers: 3.8 volts gives you 6 watts, 4.1 = 7 watts, 4.4 = 8 watts.

(In "real life" though, you just turn the knob until you like the vape).

*****

DCT tips and tricks:

Tips and tricks:

When filling your cartos and tanks: (After slotting it of course), lubricate the carto with a bit of juice and slide it up into the bottom of the tank, leaving enough room between the top of it and the top cap so you can squeeze in some juice without dumping any directly into the carto. That said, then drip about 15-20 drops directly into the top of the carto. Fill the tank as full as you can without having the level in the tank overflow into the carto, then slide the carto all the way up into and through the top cap.

THEN WAIT until a drop or two of juice finally drips out the 510 connector on the bottom of the carto. (During the waiting period, you can go ahead and add more drops - maybe as much as 10-15 more - but making sure that the carto doesn't develop any signs of "standing" liquid at the top surface of the polyfill. Pretty much fill it like you would water a houseplant; moist, but not soggy. This is very important for a great draw and great hit "right out of the box"). You do not want to put power to the coil before the carto is nice and moist; once the polyfill is scorched, it can't be unscorched. (I came up with that all by myself). As the carto "stabilizes", you'll see little bubbles (RIP Don Ho) coming out of the slot.

When you need to refill the tank, just pull the carto back down a bit, leaving the same gap as before between the top of the carto and the bottom of the top cap, and fill 'er up. Be careful not to pull the tank away from the bottom cap in the process. Been there, done that, cleaned up that mess. And again, be careful not to pour any juice firectly into the top of the carto. After using these tanks for about half a year, I just did that again yesterday. When (not if) it does happen, just go ahead and fill the tank (after mildly swearing and oulling th carto down a bit further), and then blow through the drip tip to help remove the xcess juice that has now flooded it. After a few gentle hits that will get some juice into your mouth, the carto should begin to draw nicely again.

After maybe a few days (some lucky users say a week or more), the carto will become increasingly hard to draw through. At that point, simply put a new, properly-slotted one in. Regardless of the juice level in the tank, what I do is to simply invert the tank, push the new carto in through what is now the bottom of the tank, driving the old carto out through wat is now the top of the tank. Presto.

Yes, the tanks are intended to have a top cap and a bottom cap, and might or might not have functional design elements on the "bottom" cap that would engage the flat spots on a flanged carto, but at best they barely work anyway, so I just ignore that feature and enjoy the luxury of being able to swap cartos so easily. I rarely have a problem unscrewing an unflanged carto and tank from the 510 connection, but if one does become stuck, just gently grip the top of the carto where it protrudes from the tank with a pair of pliers and turn it right out. Keeping the trim piece screwed tightly down on the 510 connectors reduces the chances of it acting like a lock nut.

The Twist itself:

I just thought of this last night, and just did it for the first time just now. "Tried not being a douche?", you might ask? No - I just put a little dab of "Streetwalker Red" nail polish right smack on the "4.0" on the volt dial, so now I can tell at a glance where I am. Not that I really cared all that much anyway, but it's just gonna be nice. I like stupid little things like that.

Remember that the Twist has the famous "five rapid clicks to turn off", "five more rapid clicks to turn back on" feature. Very nice for pocket-friendliness, and fun for the whole family.

Slotting cartos:

I recommend getting a little tube of 36 "Dremel Cut-Off Wheel No. 409" down at the local hardware store. They are 1mm thick, and do a very nice job. They are also EXTREMELY brittle, and if you're not careful, you will go through more of them through breaking than through their ntended purpose. DO NOT leave the arbor ith cut-off wheel mounted on the Dremel (or equivalent) when you're not using it. DO NOT ask me how I know this. Also consider getting a spare arbor for when you lose the little screw. Backup, backup backup.

When cutting the slot, there's obviously a trade-off between maximizing tank capacity (slot down low) and having it too damn low (insufficient juice flow into the carto). Have I made a jig yet to uniformly slot my cartos? Of course not. That would be far too sensible, and would require effort. For now, I mark them with a fine Sharpie, and err slightly on the high side.

A PBusardo Tutorial - How I slot my cartos!.wmv - YouTube pbusardo slotting cartomizers

*****

Juice:

http://www.e-cigarette-forum.com/fo.../242367-what-flavor-you-vaping-right-now.html

http://www.e-cigarette-forum.com/forum/new-members-forum/237068-name-your-fav-flavor.html

http://www.e-cigarette-forum.com/forum/general-e-liquid-discussion/286680-throat-hit-chase.html

*****

Equipment for the future, if desired:

http://www.e-cigarette-forum.com/fo...n/333560-what-device-currently-your-hand.html

Please, no drooling.


*****

To whom it may concern:

This is Steve's thread, and he requested that I post this information. I do not welcome any commentary about anyone's opinion of its being provided. TIA.

 

[Doogmar]

There's also an iphone/pad/pod app called Ohm's Law its free

Also an online chart I used when I first started with VV to get an idea where to go: https://s3.amazonaws.com/data.tumblr.com/tumblr_m9dkanCt0I1qc8949o2_1280.png

 

[loxmythe]

Check here maybe a meet would help you.
http://www.e-cigarette-forum.com/forum/showthread.php?t=342013