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regarding the difference in the vape between the stock OCC coil heads and your well built rba head smokin100516 , it could be down to the rba design, there is now a version 3 of the subtank rba.


www.fasttech.com/p/2551300

as you can see the juice channels have gone, as have the threads to secure the chamber to the base, now replaced with a guide and securing screw and holes have appeared just like with the OCC heads to allow the juice to get into the wick.

The other difference which i am sure you have already noticed between the OCC and rba head is that the occ heads allow for a much more airy draw, due to the greater air in access at the base thru large slots



where the air intake for the rba is restricted by the 4 smaller holes in the +ve connector at the bottom.

someone (cant remeber who right now but im sure it will come to me once ive posted this) has taken a hacksaw to the bottom thread to emulate the OCC air in design, Or you could unscrew the +ve connector pin from the rba and attempt to expand the 4 holes with a slightly larger drill bit..

Some folk are also drilling the chamber to provide holes like the Occ heads and V3 rba too..


The other alternative is to rebuild the OCC heads, 2 x 11mm spanners will help seperate the OCC head caps from the body to gain access to the chamber from the top, and the bottom pin on a dead occ head will just pull out revealing the rubber grommet seperating the +ve from the -ve coil tails
the cap and body can be reattached by simply compressing the 2 together with pliers

hope thats useful..






(V1 was the original for the original 6.5ml subtank, V2 what most of us use is the subtank-Plus 7ml tank version, and the V3 is the newer model as fitted in the new black n white versions of the subtank mini.. )