RDA'S Cotton going dry at different times

[MoltoCraft]

What I mean by this is that a small amount of cotton goes dry when other sides are wet, this means I need to keep re dripping after a few hits.

I hope I explained that ok for you guys, how can I prevent this?

 

[IMFire3605]

Could be several factors, one side is packed tighter than the other, ie left side of the coil is tighter than the right side so wicks slower than the right side. If it is coil dependent, one coil is not equal to the other and it is firing hotter than the other, or one coil is packed tighter than the other.

 

[csAdams]

I've had this happen. when you wick the coils try to get the same amout of cotton on both sides. also check to see your coil is firing evenly.

 

[MoltoCraft]

Is it normal for that to happen, or is it because I need to get the exact amount of cotton on both sides?

 

[edyle]

once you wick your coil, start low and move up with the wattage; you need to use the wattage that your wicking can keep up with, otherwise redo the wicking;

with usage, wicking tends to get faster compared to when you first add wicking.

 

[MattyTny]

Can you post a picture of a the coil and wick? We might be able get a better answer for you.

If this were to happen to me I would wick again and get both ends as similar as possible.

 

[Bunnykiller]

are you left handed or right handed...? north or south hemisphere? could be Coriallis Effect and tilt..

 

[sofarsogood]

I use rda's exclusively. When I started firing them with temp control everything got a lot easier.

 

[MoltoCraft]

I wicked it again and got each of the four corners exactly the same, I even left some space so I could fill up the four wells.

But one of the four corners will dry up before all the others which means I have to redrip a lot more than I need to...

The coils are both exactly the same and I am firing at 50W on a 0.15OHM coil build.

What am I doing wrong here, surely they should all dry up at the same time?!?

 

[Matty316]

Could be a hot spot on one of the coils. Try taking out the wick and and giving the coils a pulse to see if you can see any. If there is one try giving the coil a gentle strum with a mini screwdriver or some tweezers to see if that fixes it. If not give it a few sqeezes with the tweezers while the coil is glowing and strum it again untill the coil is glowing evenly from the inside out.

Note: Don't do this while firing the coil or it will short. Only do it after you have fired it and it's still glowing.

 

[VHRB2014]

If the wicks are right, and the coils are right, it usually comes down to how you hold the mod. Keeping it in one position will cause the high side wicks (when taking a draw) to dry out faster. Try to rotate the mod as you vape and see if that helps.

 

[vapo jam]

are all of the coil leads tightened down pretty snugly? are the terminals clean? with resistances that low, little things can make a big difference; ie, two 0.3 ohm coils will have the same final resistance as one 0.2 ohm coil and one 0.4 ohm coil, but in the second example the 0.2 ohm coil will be doing twice as much work as the 0.4 ohm coil.

 

[crxess]

With Dual Coils, Twins across the board.
Matched coils
Same heat pattern
Equal heat time
Same wick Density, fit, length, Fluff.

ETA: If you constantly Vape with one coil up and one down, the upper will always run dry first. Thanks gravity.(split reservoirs not so much)

 

[Romano Cheese]

Try out the Scottish Roll wicking method. I started using it a few weeks back and have been blown away by how well it works. I juice up and get a solid 15 hits before having to re-drip. You can see the cotton getting whiter and whiter towards the bottom but the inside of the wick still has tons of juice left in it so you don't get a dry hit you just lose flavor.