Ok, got to reply to two things here..
First the Uwell Crown:
The tank itself feels solid and well made, but at the same time something about it seams cheap, i think its the nurling on the top cap, but all the threading is spot on and clean.
You get three coil heads in the package.. in the tank is a .5ohm SS coil, then in the box is a .25ohm SS head and an Ni200 head.
I have only been using the .5 so far and i love the vape, it took about half a tank to break in and tasted a bit odd till then, but now its great.
Im running at 250c, 40w pre heat, 6.5 punch and 35w normal... on a long drag i can see the power drop a watt or two, but not hitting temp protect and its a lovely warm vap, better than i get from Titanium and Far better than i ever got from Ni200.
The RBA was a disappointment, its tiny... looks like a Subtank RBA inside but with a much smaller deck so wicking is not so easy, you need to make sure the wick blocks the juice holes on the RBA top cap or it Will leak... trust me, i did not cover one hole properly and it got messy, but the real let down was the fact its an SS coil pre built on the deck and when i put it on the Coil Master Tab to check the ohms, it could not read it, my old cheapy ohm could though and so could the DNA200... however it Will Not fire in temp control mode and i think its something to do with connection but not sure and hence why im using the coil head, but i dont want to keep using coil heads, they are expensive and not so easy to re wick when the wick needs it.
I will try an TI coil in the RBA, but if that fails too... it wont be using the tank for long.
The top fill is great and easy to use, just make sure to close off the airflow at the base first.
@pokerking.. pgi947 is right, .77ohm is Very high for an NI200 coil, in fact its near impossible on a 22mm atty with even 32awg, ive tried and cant get higher than .2...
I think you did not let the coil and mod get to room temp before connecting the two or your resting resistance is way off and that would explain you needing such high temps to get a warm vap.. cotton burns over 410f, though in a tank it should not as there should always be juice around the wick if it is wicking well.. I would take the deck apart, check the posts are tightened properly on the coil legs, then rebuild and leave to sit for 10 minutes Before putting it back on the mod to see if you get a lower resistance.
Ill try it on 480f for a bit and see how I get on. Hoping the coils last me a while not had a dry hit yet and the cotton is still pure white 3 days on.
