Question about MadVapes VV box mod?

[my4jewels]

I have a new madvapes VV box mod and new 14500 Trustfire flames..

My real question is: Just how hot does this thing get under normal circumstances? I mean, I found around 3.74V really nice with my 2.0 carto. After vaping for a couple of minutes, it got really hot. I waited a few seconds and looked inside the box. When I touched the glue, it stuck to my finger. And, I noticed that the box is started to melt between the switch and 510 connector.

Is the problem with me or my new pv?

p.s. I posted this on Madvapes thread also, but since a lot of you may not read that, I thought I'd ask here, too.

 

[AttyPops]

Voltage is prolly too hit for your 2.0 ohm stuff. I wonder why it didn't taste burnt tho...... hmmmmmmmmmm............

Got a voltmeter?... nm... you must otherwise you wouldn't know it was 3.74 volts

6.9938 watts...

Should be OK.

OK. Try another carto. Different (higher) ohms if possible. Wipe the threads too.

either
1) There is heat sinking from the carto to the connector -or-
2) there's a short (a small one) and it's heating the connector, but not enough to trip the regulator.

A short could be on the carto's connector, on the atty connector outside (like dirt in the connector), or on the inside of the connector and it's prolly covered with glue.

Sometimes those connectors short when you screw them in hard, or sometimes they are bad.

Best guesses.

Let us know.

Good luck.

 

[my4jewels]

Thanks, Pops. It'll have to wait until tomorrow... I'm busy for the rest of the night. The funny thing is it tasted soooo good, not burnt at all. It was a key lime juice that I diy'd, and this really brought out the flavor. Surprisingly, much more than on my 3.7V box mod on the exact same carto. And I know my multimeter is reading correctly by testing it on other batts and stuff.

I have been having trouble reading the voltage periodically this afternoon on the VV mod, sometimes it just reads 1.47 or 0.00, regardless of my moving the dial. But it works great if I screw a carto on even when it reading wonky. Weird...

I finally sort of got the learning curve under my belt for my eGo with 2.0 cartos, then tried a 5V PT with 3.0 cartos. Now, on to VV. I have my eye on a Buzz Pro veneer soon!

Maybe I should just stayed with my ego, but, NOOO, I have to methodically experiment with everything...

Voltage is prolly too hit for your 2.0 ohm stuff. I wonder why it didn't taste burnt tho...... hmmmmmmmmmm............

Got a voltmeter?... nm... you must otherwise you wouldn't know it was 3.74 volts

6.9938 watts...

Should be OK.

OK. Try another carto. Different (higher) ohms if possible. Wipe the threads too.

either
1) There is heat sinking from the carto to the connector -or-
2) there's a short (a small one) and it's heating the connector, but not enough to trip the regulator.

A short could be on the carto's connector, on the atty connector outside (like dirt in the connector), or on the inside of the connector and it's prolly covered with glue.

Sometimes those connectors short when you screw them in hard, or sometimes they are bad.

Best guesses.

Let us know.

Good luck.

 

[Nomoreash]

Double check your readings with the multi meter and make sure your touching one lead to the center post and the other to the outer negative part of the connector, keep them still and push the button. If your getting strange readings doing that and moving the dial it could be an issue with the pot. If your going to get into vv very much I'd recommend a screw on meter they make things much easier in the long run.

As far as it getting hot, yes that regulator will get hot. Linear Regulators aren't very efficient and waste the extra energy as heat. Especially at lower voltages, If you vape a higher ohm atty at higher a higher voltage they are a little more efficient and generate a little less heat. If you can find something to use as a heatsink for it or can position it so that more air can get between it and the body it can help.

Switching regulators like on the Buzz Pro you mentioned are much more efficient, will have longer battery run times and generate much less heat.

 

[zoiDman]

I have one and when I first got it, it got warm right above the power button. Enough to melt the pastic very slightly.

I figured that it would return it. But it seemed that after about a day or so, it stopped getting warm. Not sure if the expocy was transfereing heat or what. But it just doesn't get very warm anymore.

Here is a tip: Since the voltage wheel doesn't have any lines on it, at least mine didn't. After you find where 3.7 volts is using a multimeter, file a small notch in the wheel in the center of the wheel opening. The put a line on the mark with a fine point sharpie marker.

It makes it easy to look at the voltage wheel and know basical where you are. And the notch makes adjusting the voltage easier with your thumb nail.

 

[jonny2hottie]

Here is a tip: Since the voltage wheel doesn't have any lines on it, at least mine didn't. After you find where 3.7 volts is using a multimeter, file a small notch in the wheel in the center of the wheel opening. The put a line on the mark with a fine point sharpie marker.
It makes it easy to look at the voltage wheel and know basical where you are. And the notch makes adjusting the voltage easier with your thumb nail.

did the same thing with my madvapes VV. then i sold it. for this...
its of much better construction. and doesnt get nearly as hot as the madvapes one. plus no glue.

PROVARI FTW!

 

[AttyPops]

If I understood my4 correctly, it's the atty connector getting hot.............maybe not. I was assuming most of the glue is on the atty connector. There shouldn't be any glue on the regulator (which does get hot) since it won't dissipate heat properly.

Also, the regulator is going to get hotter for higher voltage differences... e.g. diff between battery voltage and output voltage. So the LOWER the voltage setting, the hotter the regulator is going to get, as I understand it. Someone correct me if I'm wrong here. I think a lot of the voltage diff is put off as heat... as compared to the more efficient, but more complex, switching regulators.

You could try to move the regulator away from the plastic if you can find a way to get at it without damaging anything.

P.S./EDIT: Nomo said some of this already.. +1 Nomo

P.P.S. Not a hot glue fan at all.

 

[emus]

I soldered a heat sink to the regulator.
Luckily my regulator survived the soldering and is now transferring a lot of heat.

 

[zoiDman]

If I understood my4 correctly, it's the atty connector getting hot.............maybe not. I was assuming most of the glue is on the atty connector. There shouldn't be any glue on the regulator (which does get hot) since it won't dissipate heat properly.

...

Acutaly, mine got hot half way between the power button and the battery connector.

BTW - I bought the VVPV box mod because it was very inexpensive and I wasn't sure if a VVPV was for me. I didn't want to spend big money on a VVPV only to find it wasn't worth it. It took me all of 3 days to realize that a VVPV is the ONLY way to go.

I bought a Provari the following week.

 

[emus]

Acutaly, mine got hot half way between the power button and the battery connector.

BTW - I bought the VVPV box mod because it was very inexpensive and I wasn't sure if a VVPV was for me. I didn't want to spend big money on a VVPV only to find it wasn't worth it. It took me all of 3 days to realize that a VVPV is the ONLY way to go.

I bought a Provari the following week.

I made a VVPV using MV regulator kit for the same reason.

It does perform great but I'm still partial to smaller 3.7v one batt mods w/ a quality switch.

Pros and cons. Boils down to personal preference.

 

[cskent]

I bought one of the first batch of VV boxmods from Madvapes. Mine started melting in a couple of spots too but once it deformed the plastic a little bit nothing more happened and it's still working great after several months.

The way this thing works is that it runs the full voltage of the batteries into the voltage regulator but only passes through to the atty what you have it set for. The excess power is turned into heat at the regulator. That means it can get pretty hot inside the box if you're running it at lower voltages. Here's a link to the Madvapes article about regulators. The Madvapes VV boxmod uses a linear regulator.

Voltage Regulators

I hope this helps.