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SubTank RBA dry hit/wicking troubles SOLVED!!
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Almost Jaded Offline
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Post: #1
SubTank RBA dry hit/wicking troubles SOLVED!!
So, I *LOVE* my SubTank Mini.  And the OCC's that come with it work GREAT.  But the RBA doesn't wick for shit, because those tiny little holes on the bottom are, well - tiny, and on the bottom.

Are you willing to get a little dirty?  Good

After fighting with it for a few days, I finally looked at how the "stock" replaceable coils were built, and said screw it.  First, I got out the Dremel and opened up the existing channels quite a bit, even cut a little into the cylinder to help out.  Much better, but not fixed.  SKIP THIS STEP.

Just get a center punch and a drill.  Making sure the cylinder is on tight, mark on the outside, on each side, where the wicks will point from the coil when it's centered.  Put the *clean and assembled, but no coil or wick in it* deck in a vice - not too tight, but get it in there.  Use the center punch to tap a starting dent on each of your exterior marks.  Use a 2mm carbide bit, and drill two holes, one in each side.

Make sure you clean it up real well.  I recommend taking a soft wire brush on a rotary tool to the inside to clear away the edges of your new holes, but that's optional if you're lazy.

You may now run 80/20 or thicker juice without hesitation, no dry hits, no problem.  I even stacked two 2mm coils on top of each other and ran it with a high powered dual coil setup to make sure - no dry hits with 80/20 juice.

Enjoy!

PS - don't let anyone say you can't run dual coils on this RBA.  I don't even cozy them into each other.  Stacked vertically, they work great and don't touch at all.  Hit me up or comment here if anyone cares for more details on it. 

Remind one liberal per day, that laws affect only the law-abiding.
(This post was last modified: 27-05-2015 02:55 AM by Almost Jaded.)
07-04-2015 12:04 AM
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Michael Offline
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Post: #2
RE: SubTank RBA dry hit/wicking troubles?
I've drilled out atties before, but I never thought to use a punch to get the hole started, I've always had to just rely on my not-so-steady hands to line it up. Great idea mate! Care to share a picture or two of the finished product? I'm interested how it turned out. I'd also love to see how your dual coil setup works. 
07-04-2015 04:29 AM
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Almost Jaded (04-07-2015)
wedgtail Offline
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Post: #3
RE: SubTank RBA dry hit/wicking troubles?
I was thinking along those lines as well. the punch will always make your drilling more accurate Michael.  
07-04-2015 09:48 AM
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Almost Jaded (04-07-2015)
JohnnyMac Offline
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Post: #4
RE: SubTank RBA dry hit/wicking troubles?
What a great idea, AJ! You're the first I've heard of doing that to the vape chamber of an RTA like that. Everyone just bitches about the juice channels not being wide enough and moves on to a better designed RTA. No reason why what you did wouldn't work since it's pretty much what the pre-built BCC coils heads do. Nice job! Good
07-04-2015 06:41 PM
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Almost Jaded Offline
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RE: SubTank RBA dry hit/wicking troubles?
Yeah, everyone at my vape shop was like - we drill out airholes all thetime and I was like no - I drilled out new juice feeds and they were all amazed.  Which seemed strange, because it seemed like a really obvious fix to me, given - as JohnnyMac says - that it's identical to the "stock" coils setup.  My holes are even slightly smaller than theirs @ 2mm instead of 3, since I figured the bottom holes - especially after being opened up - were still feeding in as well.  

Been using it about a week, hasn't flooded once.

I could rebuild a dual coil setup and take a couple pics I suppose, I went back to one because I was using so much juice, LMAO!

Remind one liberal per day, that laws affect only the law-abiding.
(This post was last modified: 27-05-2015 02:56 AM by Almost Jaded.)
07-04-2015 06:59 PM
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Almost Jaded Offline
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Post: #6
RE: SubTank RBA dry hit/wicking troubles?
[Image: a1wUMWzl.jpg]
Dramatically enlarged the holes...


[Image: 2xnHThwl.jpg]
Bottom view...

[Image: QkAJxpwl.jpg]
Also trimmed into the cylinder - careful to keep the threads intact.  Unecessary- because drilled holes!

[Image: GK4nr1Hl.jpg]
Assembled...

[Image: ZNaEMNpl.jpg]
Wick lines up with holes...

[Image: GNKUyALl.jpg]
On the base - good to go!

Smile

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07-04-2015 08:20 PM
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JohnnyMac Offline
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Post: #7
RE: SubTank RBA dry hit/wicking troubles?
Awesome job, buddy! Good
07-04-2015 09:12 PM
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Almost Jaded (04-08-2015)
jerryz Offline
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Post: #8
RE: SubTank RBA dry hit/wicking troubles?
I have a Patriot RDA tank. I pulled it apart to get a look at the insides. It seems very shallow. How do you fill with juice, and how much do you use?

ROCK ON! VAPE ON! Music2
28-04-2015 12:40 AM
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Almost Jaded Offline
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Post: #9
RE: SubTank RBA dry hit/wicking troubles?
The Patriot is a direct drip.  Pictured and discussed here is the build deck for a SubTank Mini.  That whole assembly screws into the tank that holds 3-4 ml of fluid at a time.  

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28-04-2015 02:05 AM
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jerryz Offline
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Post: #10
RE: SubTank RBA dry hit/wicking troubles?
Ok So I can fill right from the the drip tip opening then.

ROCK ON! VAPE ON! Music2
28-04-2015 02:08 AM
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