Kanger Subox Mini Dual Coil RBA build.

[Clifton]

Hi guys. This is my first thread/post and I would like to share my build on my Kanger subox Mini rba. Please tell me what you think and how I can improve this set up.

It's been working great but when I go above 35 watts, I start getting dry hits. How can I improve this to vape on higher wattage?

I use 70% VG and 30% PG.

A little more about the build, it's a 0.4ohm coil with 28g kanthal wrapped 5 rounds around 2.5mm screw.

I usually vape around 19 to 25 watts. Occasionally I go to 30 just for kicks and it's amazing vapour and flavour. Above 35 is just dry, burnt and URGGGGHHH.

TL;DR, just tell me if you like what you see

 

[Baditude]

View attachment 481449 View attachment 481448

Hi guys. This is my first thread/post and I would like to share my build on my Kanger Subox Mini RBA. Please tell me what you think and how I can improve this set up.

It's been working great but when I go above 35 watts, I start getting dry hits. How can I improve this to vape on higher wattage?

I use 70% VG and 30% PG.

A little more about the build, it's a 0.4ohm coil with 28g kanthal wrapped 5 rounds around 2.5mm screw.

I usually vape around 19 to 25 watts. Occasionally I go to 30 just for kicks and it's amazing vapour and flavour. Above 35 is just dry, burnt and URGGGGHHH.

TL;DR, just tell me if you like what you see

Just curious ... if you're getting a great vape under 35 watts, why do you insist on vaping at a higher wattage? Higher wattage does not necessarily improve the vape.

Having said that, you could try lowering the height of your coils, closer to the deck for a cooler vape.

Dry burnt hits are generally due to inadequate wicking or inadequate airflow. It's hard to tell from you pics, but it looks like you are using the right amount of cotton IMHO. Trying to stuff too much cotton through the coil can strangulate the cotton fibers and decreasing their wicking capability. I use 3.0 mm coils, simply because its easier to install more cotton into the coils. I don't use a sub-ox mini, so I'm not familiar if it has adjustable air flow. More airflow allows higher wattage without dry hits.

Your coils could be wrapped more tighter to appear more symmetrical loop to loop, but that's being nit picky.

 

[Clifton]

Thanks for the feedback Baditude. This is actually my first time trying the RBA section, got ambitious and did a dual coil. Well I don't WANT to vape on higher wattage but so far as I go higher, it gets more flavourful and more vapour which I enjoy occasionally for the kick. I am trying to find out where the limit is so I would like to know if there is even supposed to be a limit? Am I doing something wrong that it gets a dry/burnt when it reaches 35 watts? Or are some builds meant to be.

Also, currently I am using 70vg 30pg so when I wick, I make sure the cotton doesn't cover the juice channels and it works well. When I vape 50vg 50pg, should I change the wicking with more cotton and cover the juice channels?

Thanks guys, I would appreciate any input. I'm only a 3 week old vaper

 

[smokinGAVIN]

Is it possible to position the coils closer to the air hole in the middle? It looks like the air will go straight up as you inhale instead of going thru the coils first.

 

[Clifton]

yep that was my intentions.

this was where i took reference from.

My buddy's 0.21 dual kanger subtank build hits excellent up to 80 watts! : Coilporn

are there any pros/cons with coils above airhole??

 

[Ou2mame]

I can't think of a pro of not having the air hit the coil besides the coil getting extremely hot which for me is more of a con.

 

[Clifton]

ou2mame i've had the original single coil above the airhole and i was having spitting issues which i was struggling to solve. so now that the coils are not under the drip tip, when it does spit (very rarely almost never), i won't get juice in my mouth. is this reason good enough, what do you recommend?

 

[MagicJosh]

View attachment 481449 View attachment 481448

Hi guys. This is my first thread/post and I would like to share my build on my Kanger Subox Mini RBA. Please tell me what you think and how I can improve this set up.

It's been working great but when I go above 35 watts, I start getting dry hits. How can I improve this to vape on higher wattage?

I use 70% VG and 30% PG.

A little more about the build, it's a 0.4ohm coil with 28g kanthal wrapped 5 rounds around 2.5mm screw.

I usually vape around 19 to 25 watts. Occasionally I go to 30 just for kicks and it's amazing vapour and flavour. Above 35 is just dry, burnt and URGGGGHHH.

TL;DR, just tell me if you like what you see

I gotts ta try this. Pretty sick build

 

[Ou2mame]

I would build under the coil to prevent overheating the juice, thats how I always build and that's the style drippers I own because of it. I think there's more flavor and a cooler vape at higher wattage. It's up to you really.

 

[WileE]

Clifton - The Sub tank RBA has a reputation for poor wicking. If you compare it to the replaceable heads you'll notice the holes are missing from the sides of the sleeve. The wicking channels are abysmally small when you screw the sleeve on. For single coils centered over the air hole this is easily fixed by screwing the sleeve down on the build deck and marking the channel locations on the sleeve (they are perpendicular to the screw posts). Now drill a 5/64 hole through the sleeve about centered in height. When you screw the sleeve back on it will always index back to the same location (just don't flip it upside down). Your wick doesn't need to be stuffed in the holes; just right next to them. It will wick like a champ & not leak. I've done 4 like this so far. In your case with the dual coils I would instead drill 4 x 1/16" holes. Looking down from top, with wick channels at 12 & 6 oclock drill the 4 holes at 1:30, 4:30, 7:30, & 10:30. Make sure the holes are not in the threaded portion of the sleeve. Now you'll have a hole in-front of each wick tail. The down side is that if you do the 4 holes your pretty much committed to dual coil builds though.

 

[Clifton]

wilee, i appreciate your input. but the new subox mini rba sleeve has 2 juice holes already just like the stock occs hahaha
heres a pic for reference too. so i doubt i'd be needing to drill anymore holes in them. as for my current wicking, i've adjusted just a little bit where the wick touches around the juice holes in a U shape, but not directly covering it. it's wicking amazing now and i'm going up to 45 watts without dry hits. amazing!

 

[WileE]

Clifton - That's great news I don't see the pic though & I'd like to. Please try uploading the pic again. What size holes do they come with? I've got 3 more solid sleeves sitting on my bench waiting to be drilled for friends. I may have to save a few solid ones for the 4 hole dual coil mod, now that they come factory drilled.

 

[Ou2mame]

 

[Clifton]

Sorry about that lol my upload failed didnt notice. yep ou2mame got it! that's the old one on the right and the new ones on the left

 

[RandyF]

ou2mame i've had the original single coil above the airhole and i was having spitting issues which i was struggling to solve. so now that the coils are not under the drip tip, when it does spit (very rarely almost never), i won't get juice in my mouth. is this reason good enough, what do you recommend?

I have been using the STm for quite a while. When I have spitting issues I can usually attribute it to too much cotton, or not enough, which causes over-saturation. You can usually tell if your wick is too wet when the juice you get in your mouth isn't burning you. I just had to re-build mine last night because I used a bit too much cotton when I re-built it earlier in the day. After the 2nd re-build, zero spitting. I also build spaced coils, which IMO, lessens (hot) spitting.

 

[itskohler]

I also build spaced coils, which IMO, lessens (hot) spitting.

This is very true, at least until the build "breaks in". All of my contact coils will hiss and spit no matter what I do. I just keep putting juice on, dry fire it, more juice, longer dry fires, then it settles in and stops spitting.

 

[stalkster]

Wicking properly in any tank is a big factor, I'd personally build it over the air hole. Maybe since only two juice holes build a single parallel coil, you get the same surface area but just 1 wick.

 

[Clifton]

Can anyone share more ideas of builds I can do on subtank mini rba? i've got 26g and 28g kanthal to mess around with. I'm thinking of twisted/claptons/parallel. Not sure if those can mount properly onto my RBA though. I'm too bored of the single coils. Any input is appreciated thanks!

 

[Ou2mame]

Vertical?

 

[Neon28]

Is the dual coil build better than the single coil build? Which one burns out the battery faster? Does one give more flavour when vaping?