Leaks with Big Baby Beast

[Islandswamp]

I have had a few small leaks with my two TFV8's and I'm not sure why (but I have ideas).

One of the leaks was caused by the tank coming apart in my hoodie's pocket. I didn't tighten it right when I put it back together.

The other times it has leaked out of the air holes and I wonder if I overfilled the tank and the pressure perhaps caused it to leak. This isn't happening often, and I don't notice the leak right away, so it's hard to nail it down. MOST of the time the thing works great so I'm not really worried, but if anyone has any opinions on this subject I'd love to hear them!

For the meantime I will stop filling the tank when it's nearly full instead of trying to fill it right to the brim. Although I HAVE managed to get it that full many times, it's ultimately not worth it if it's causing the leaks.

 

[QcVaper]

2nd thread with these without answers i see in 5 mins....... I had a single leak that was my own fault but i never filled my tanks to the brimm always close enough to have just a bit of air between the 2 and i've never had leak with any previous tanks. Can't say if it won't leak once sideways though i haven't tried that yet.

 

[stols001]

Well, if you aren't having leaks anymore, I'd say you answered your own question. When in transit and not being vaped, I close off my airholes though my tank isn't really a big leaker....

Anna

 

[suprtrkr]

Change in pressure is a likely cause of the leaks. Even the differential of leaving the air conditioning for the outside might be enough. The way most bottom coil tanks work is "air-over-vacuum." That is, the vape chamber, where the coil and wick are located, is pressurized at ambient pressure through the drip tip. But the tank, on the other side of the wick, is sealed and, when partially empty, has a lower pressure than ambient. As you vape the machine, the wick soaks up more juice and takes it to the coil. As juice is used up, the pressure in the tank lowers (since the volume remains the same and there is less juice in it). This draws a partial vacuum in the tank. When the pressure is sufficiently lowered, the atty will "burp" an air bubble into the tank from the chamber through the wick, thus returning the tank to balance. The key point is, there's nothing but the wick and the pressure differential holding the juice in the tank and keeping it from flooding into the chamber (in a bottom coil design, the juice level in the tank is higher than the wick in the chamber and gravity... etc., see Sir Issac Newton for a complete statement). If ambient pressure is lowered-- drop in barometric pressure-- or the tank pressure is raised-- increase in temperature-- the balance is upset and, if the tank then has higher pressure than the chamber, it will re-balance by forcing juice through the wick into the chamber, which can (usually will) leak out the air holes. Something similar, from the opposite cause, is quite common when traveling with a vape on an airplane. As the altitude increases, ambient pressure is lowered, with the same result.

The fix is pretty simple: don't fill the tank quite full, and carry it upside-down, so the air bubble in the tank is up by the wick holes, and not at the top of the tank with the wick holes covered with juice. Then, if any pressure imbalance occurs, it is the air in the tank forced through the wick, not the juice.

Welcome to the board.

 

[Mike McVape]

I have 4 BBB tanks and the only time I've notice a bit of leaking is when over filling. (Or as you noted once when I didn't put it together incorrectly but that's user error not a leak issue) I fill to virtually full with just a wee air bubble remaining, been working fine for me.

When trying different coils I noticed the Q2 0.4 was much more prone to leaking than the T8 0.15, my go to coil. (Haven't tried any other coils except the M2s that came with Stick V8 I started on.)

Usually set them down keeping them vertical no issues. Laid one of my GX2/4 down on it's side with a full atty a half hour ago. Just checked including back blowing and zero leak. And that's with 70% pg juice.

 

[ColdHeartClan]

Some of the leaking issues I've seen come into my shop with the tfv8 series (bb-cloud beast) and the tfv12:

Flooded the coil on priming, leaks out airflow and stops once you vape through the flood.

Thin juice can become thinner due to heat of summer making it sometimes flood the coil when the cotton gets weak.

The damn thing not being tight enough (like you first stated)

Customer is running a coil vastly under the power rating and the coil floods.


Hope some of that helps.