Ok, my reservations about the protank have now been laid to rest.
So, I am disappointed that I can't buy replacement Protank heads that perform well, but if you are up to the task, this is fixable.
I just rebuilt 2 old heads using hemp twine for wick and 30awg kanthal with the 4x40 machine screw method and man, what a difference.
I got 1.5ohm coils with 5 wraps, vaping 80/20 PG/VG on 3.5 volts AND getting WARM vapor to top it all off, full of flavor, burning taste completely gone.
THIS is the way vaping is supposed to be.
What I did:
- Took 1mm hemp twine, boiled it to remove any possible treatments that may have been applied, even though this is supposed to be 100% natural.
- Dried out the boiled twine and separated the twist out into individual small threads
- clip of length of kanthal 30awg, heated it up with stove burner and let it cool 4 or 5 times to soften it and take a little of the "spring" out of it
- Used a 1" 4x40 machine screw, made 5 wraps with .30awg kanthal wire, removed screw
- Made a loose wick out of the shredded hemp strings into an approx 2.5mm wick, I did NOT roll this up tight, left it really loose. Threaded it into the coil and pulled through until it got just slightly tight... or so the coil was making good contact with the wick all the way around without pulling it so tight that it started to compress the wick
- Re-assembled the head as shown in multiple youtube videos making sure to be cautious and prevent any shorting
- clip off excess wick and wire
- prime wick with some juice, check resistance and for shorts on my old ZMax
- Grin from ear to ear when I start vaping my Pina Calada 80/20
* Machine Screw Method* ==>
Machine screw coil wrap for Vivi Nova / Kanger T3 - YouTube (T3 how-to, but shows how to use the screw to make perfect coils)
Kind of mixed feelings because I'm glad this is fixable and I am MORE than happy with the performance now, but I'm also quite disappointed that I cant just buy working 1.5ohm coils so I don't have to hassle with rebuilding.
And by the way, if you are new: Don't fall for the "experts only" stuff about rebuilding your own... mechanically, it is quite easy. The only thing you need to MAKE SURE OF, is that you are using a device that has electronic short-circuit protection (Provari, Sigelei ZMax, etc). If you are using a mechanical mod, I would be VERY careful or you will end up with a serious meltdown on your hands. Check your assembled coils with a VO meter before you fire them on your device!