Kanger subtank - OCC heads problem

[RandyF]

My first .5 OCC coil only lasted 3 days . I put my device up to 25 watts and it totally fried it. A terrible burnt hit. I backed it back down to 20 watts and it was fine for a little while, but then another bad burnt hit. Down to 15 watts and I literally sucked hot particles in my mouth when taking a hit. ...? The cotton and/or coils are literally breaking apart? That's totally gross and I can only imagine, not that safe.

My second .5 OCC, I never put my device above 17 watts, keeping it at 15 watts for the most part. Within 4 days, same thing ... total burnt hit one day, sucking up hot particles the next?

What's going on? I thought I was supposed to be able to hit a .5 coil up to 30 watts ... Is sucking up hot particles from the coil normal? Should I just keep it at 12 to 15 watts and that's it, taking 1 to 2 second drags and that's it? Is it just a string of bad coils?

Thanks

EDIT: Thought I should mention that the juice I used for both coils was 50/50 watermelon. I hear it's better to use higher VG liquids with sub ohm tanks. But can that be part of the reason why the coils are being fried so quickly?

I run my coils at 28watts all day on all three of my ST's (2 mini's and a nano) with the OCC heads without issue. I don't ramp up to 28 watts, that is where I start.

First, make SURE you are properly wetting the wick BEFORE you put it in. Kanger says 3 drops, but it is actually more like 8 to 10. I put one drop on each hole and let it absorb, then I drop 6 to 8 through the top. Doing this I have never got a burnt hit, other than ones that were my fault for letting the juice level fall below the holes.

Also, you didn't mention what mod you were using. The .5 is a sub ohm coil, if your mod doesn't have step down, you are not actually firing it the low watts you mentioned. My DNA30, that does not have step down, lets me know that anything below 18.5 watts on this .5Ω (DNA30 reads .6Ω) is too low. If yours reads .5 then bump that up to about 20 watts.

These work great at around 28 watts with the airflow wide open (using the OCC's), if you are getting burnt hits, you are likely doing something wrong.

 

[Vatigu]

I usually vape 27watts with stock OCC and 29 watts when I've rewicked them to rayon. I generally get 2-3 days per wick. I found that if you do not hit the subtank coils hard enough (not enough airflow) the juice sizzles and the coil will burn the wick after the wick is burned it won't wick as well - leading to dry hits. I had similar problems and started lung-hitting harder as a result and the problem went away. Which was contrary to a lot of advice at the time.
Ymmv