diving into the deep end

Status
Not open for further replies.

lemonyleprosy

Full Member
Verified Member
Mar 2, 2014
60
81
Los Angeles
so... while waiting for my nemesis clone, kayfun lite plus clone, kayfun 3.1 clone (yup, i'm a cheap poor .......), and
nimbus to arrive, i decided to attempt to build my first coil, and share my experience with you fine folk (and to have
step by step documentation of my first try to see where i went wrong if i fail)
i have a cheapo no name mini dripper atty, and when i bought it, the shop tossed in some kanthal wire and wick.
el cheapo dripper (please ignore my ungroomed nails):
1.jpg
i don't like to do things simply. i'm a born tweaker, and since i happen to have a fair amount of electronics experience
(used to fix 'em as a side job) and some experience wrapping coils (wrapping my own speaker coils as well as coils for
other things, like a homemade theremin), i decided to try for a dual coil build. i wanted to do a double barrel microcoil
build for my first, but looking at this rda there's no way to make that happen.
i only have a basic idea of what i'm doing- this is purely experimental, so naturally, *don't use this as a guide*. i
don't even know what gauge wire and wick i'm using, it's whatever the shop gave me. (don't worry, i've got a multimeter. i
have orders of 32 and 30g wire and 2 and 2.5mm silica wick on it's way- but right now i'm just working with what i've got)
wick appears to be 3mm, the wire... who knows.
i happen to be a body piercer, so i decided that 18g needles would be ideal to slide through the wick to give me something
solid to wrap around. i don't like being poked so i shoved the sharp ends into cork.
everything set up:
2.jpg
my goal is 2.4ohms per coil, for a final resistance of 1.2 ohms. my multimeter is cheap, and reads .2 ohms lead to lead,
so i'm looking for a reading of 2.6 each coil. i can't go too low cause i'll be using my mvp 2.0 until my new gear comes.
given that i don't know the gauge of the wire, i'll have experiment to find the right amount of wraps.
so. heated the wire with my trusty bic to make it more pliable and remove any manufacturing process residuals...
shoved the needles through the middle of the wicks... (harder than it sounds when you're a few drinks in):
3.jpg
and got to wrapping. quickly bailed on the idea of wrapping around the wick and decided to wrap wire straight around a 12g
needle instead. quick check of 7 wraps is 1.2... so 1ohm given the baseline of my multimeter. divided by 2 would give me
.5ohm, too low for my mvp. more. 10 wraps reads 1.6... seriously? yup, my mvp reads it as 1.4:
4.jpg
let's try 13... i like that number. 13 reads 2.0 on my multimeter, 1.9 on my my mvp. seriously? talk about using the wrong
gauge wire... 14 is the magic number, reads 2.1 on the mvp. halved, 1.05. dunno if the mvp can fire that low. if it can...
fired at 3.6v in vv mode, 1.05ohms, it'd pull 3.43 amps, just short of the 3.5 max for an mvp 2.0.
one coil, 14 wraps, 2.1 ohms, firing:
6.jpg
apparently i can only post 5 pics per post. so, part two will be the next reply down.
 

lemonyleprosy

Full Member
Verified Member
Mar 2, 2014
60
81
Los Angeles
time to build another. second coil built, same resistance... both mounted now. positioning the coils before checking
resistance:
7.jpg
coils positioned to the best of my ability (given that i have no experience yet):
8.jpg

resistance check on the mvp, 1.0 ohms.
given that the build came out as 1 ohm, for safety's sake, since everything i've read said the max output current of the
mvp 2.0 is 3.5amps... my max voltage should be 3.5, drawing 3.5 amps and 12.25 watts... so i'll test fire at 3.3v and not
go any higher than 3.4v during use.
firing both coils at 3.3:
10.jpg
weak glow, takes about 4 seconds for them to fully glow, and after 5-6 seconds my mvp auto shuts off like it does if i
take too long of a drag. i'm guessing that i'm pulling too much power. my battery also isnt fully charged, it's only at
3.9v. gonna let it charge while i thread the wicks.
let's not discuss my horrible wick job, i shoulda boiled some cotton and used that instead. pretty sure that was the
hardest part, ended up removing about 3 strands and mutilating it:
11.jpg
probably best to not drop the freshly built thing onto the floor... at least i didn't drop it in my vodka and coke.
one last resistance check prior to dripping some ejuice and firing reads 1.1 on my mvp. think i should finish my drink
before i try this...
okay, drink downed, here goes nothing.. 3.3v, 1ohm. see any vapor?
12.jpg
yeah, me either. hot and almost no vapor. cranking up the voltage with a metal
container nearby to chuck it in if need be. 3.5v, not much vapor, lots of flavor. at 5v, tastes a little less than
pleasant, still not a decent amount of vapor, and less than safe given the current draw.
got ...... and ripped off one coil. still less than decent.
so, here's where i think i went wrong... need a larger gauge wire for sure. maybe shouldn't have gone for a dual micro
coil first time out, but hell, was fun and informative for me.
definitely need to work on my wicking skills (or lack thereof), and potentially use cotton in the beginning unless i'm
gonna wrap around it.
need more power, but that will be taken care of when my mech mod comes day after tomorrow. need more room to build, that
will be taken care of when kayfun clones arrive day after tomorrow.
other than that, i haven't figured out where else i went wrong yet. but hey, it fired, it vaped, just not well.
 
Status
Not open for further replies.

Users who are viewing this thread