little boy rda duel coil

[flip200189@gmail.com]

Just bought a little boy rda using on an mech mod no kick or anything. Building with 24g kenthal wire with cotton for wick. Also using a 35A high drain battery. When I use one coil it works great the full coil heats up/glows evenly (7wraps). When I go to do the same exact coil to Do duel they heat up but not enough to glow or make any real vapor. Now I have made duel coils that work fine but with 28g kenthal. Is this problem because of to many wraps (7) with the 24g kenthal?

[Tam]

You only have to post once. Someone should be along shortly to give you an answer.

You say that you're using 7 wraps. What resistance does your ohm meter read when you check your build?

[vaping_jake]

I only have had the little boy for a night. I used some wire that came with the unit just to try it, and it was enough to generate 2 dual coils 7 WRAPS FOR total resistance 0.7 ohms. And I have to say i am totally impressed with the way this thing vapes. I have tried 50/50 60/40 it doesnt matter this thing kicks @$$. You should measure your resistance before hitting the power button, maybe when you added the second coil something is making contact thus increasing resistance?

[flip200189@gmail.com]

Unfortunately I don't have my ohms meter recently broke it. It hits like a champ with a single coil,Just would like to try a duel.

[flip200189@gmail.com]

I know you should always check, but should be around 1.7 ohms

[EverPresentNoob]

well I have the same RDA and im currently running a dual coil 24g 9 wrap on each side and it ohms at .25ohm. here is a great online tool that while not infallible is a good ballpark guestimator. http://coiltoy.ermeso.com/ With that calculator it shows that you should be around .2ohm with 24G Kanthal a1 at 7 wraps for dual coils. Like I said Im currently running duals with 9 wraps and mine will heat up cherry red within a couple seconds.

Now that said, with the two coils that came with my RDA (Little Boy Clone) I was right at .25ohm. The vapor was a touch hot for me so I tried a single coil at 10 wraps. wasnt hot vaper anymore but the ammount was lacking. My current dual coil 9 wrap is just perfect for me. Obviously your mileage may vary...

Oh, these were all speced at a 2mm diameter coil with 0 spacing.

Hold up, 1.7 ohms on a 24G 7 wrap dual??? Um..... with what guage wire are you figuring that? did you mean .17? that seems more in the ballpark to me.... But I am new to vaping, just not electronics....

Edited February 14, 2015 by EverPresentNoob

[flip200189@gmail.com]

I know you should always check, but should be around .175 ohms

[fishguy1123]

Umm.... was that a typo? 1.7 ohms?

[flip200189@gmail.com]

I'll have to try again currently rank out of time to tinker with the duel. I'll try again and post my results

Ya it was

I'll have to try again currently rank out of time to tinker with the duel. I'll try again and post my results

Ya that was a typo lol

[flip200189@gmail.com]

Sorry for that ^^ phone is stuck on stupid lol

[fishguy1123]

Flip, I don't want to seem harsh, but if you're trying to build that low without an ohm meter, multi meter, or even a regulated device to check the build on I have to strongly advise you not to. As you probably know a mech has no safety features built in and you could vent the battery at best if it's a hard short. Please be safe!

[flip200189@gmail.com]

Ya kinda of been worried about that, stuck a fuse on the battery if it helps

[fishguy1123]

Only a lil.... But seriously, it's not worth it to go that low blind. Maybe a vape shop near you could help until you can get a meter.

[flip200189@gmail.com]

Your right I'll just wait I have the single coil going now and it hits like champ. I'll just be patient

[fishguy1123]

Good, you can always go lower if you want later. BTW, welcome to VT. Take a look around, lots of good info and ppl here to help you when you need it.

[flip200189@gmail.com]

Definitely i appreciate all the help from everybody

[flip200189@gmail.com]

Alright so I got an ohms meter i build a .5 ohm dual coil 24g kenthal and it won't how the coils built on my troll rda instead of little boy

It won't make the coils glow*

Side note .5 ohm single works fine

[fishguy1123]

Are the posts firmly set? I don't have either of those rda's, but some posts can twist when not tight.

[flip200189@gmail.com]

Yes it is a square dual positive post

[fishguy1123]

Maybe pics of your build will help

[flip200189@gmail.com]

I will have later took off the other one and left

[Tam]

This might be a dumb question but I'm going ask anyway. When you built the .5 ohm dual coil, did you build two coils at .5 ohm each or did your meter read .5 ohm for both coils installed on your RDA?

[flip200189@gmail.com]

Meter read both

[flip200189@gmail.com]

Weird now that I think of it, read both separate and metered .5

[Tam]

When using dual coils, if you build each coil at 1.0 ohm, put them together in an RDA and it'll read .5 ohm. If you checked each coil separately and each one read .5 ohm, then putting them together will divide the resistance in half to .25 ohm. Your device might not be able to fire that low, which could be why it wouldn't work.