Istick dripper coil resistance problem

[shaunnadan]

Hi everyone happy holidays

So I've decided to play around with the dripper on the istick today and after 6 different coils I have given up for the night.

I'm using 28g kathal a1 wire


So last night I build a 1ohm single coil and fogged up the lounge at 10w - perfect

Today I decided that I should change to a dual coil build for maximum performance.

Problem started.....

Using 2x 0.5ohm coils fired on the istick but the ramp time was too long. Starts to glow red around 7 seconds and then you can only Vape for another 3 till the timer cuts you off. Also didn't have much effect at full 20w power.

Then tried a variety of different combinations and just got irritated at the leaking that I packed it away for the night.


What is the ideal resistance for a dual coil setup on an istick?

Thanks ...

 

[free3dom]

You can't do sub-ohm on the iStick, I'm surprised it even fired at all. For dual I usually do 2x2.0 Ohm coils (28G works, but 30 is better) - which yields an overall 1 Ohm resistance. For this you do need to fire at 20W to have any decent amount of vapor.

 

[shaunnadan]

Correction- I tried 2x 2ohm coils to give me 1ohm

 

[Arthster]

As far as I know the Istick can't go below 1 ohm on a coil. Just tested mine and 0.8 is to low for it.

 

[Yiannaki]

@shaunnadan I'm not to sure if vaping a dual coil setup on the istick is the best idea bud.

As far as I know the istick shouldn't be able to even fire below 1.0Ω I'm not sure why yours is firing.

I personally would not vape a dual coil setup on the istick. It was not designed for that use.

If you really want to start getting into rebuildables, buy a high power regulated mod or a mech and go wild.

 

[free3dom]

Correction- I tried 2x 2ohm coils to give me 1ohm

Okay, then you need to use 30G, which heats up a bit quicker

 

[Arthster]

Also to be honust the ramp time on a duel is to long on the Istick. I had much better results just running a 1.2 ohm single coil with 30g Kanthal

 

[shaunnadan]

I made a mistake on my 1st build. Was short of 1 wrap and landed up with a 0.9ohm coil. Had to scrap it since I had already cut of the legs going to the posts. So I know that it won't fire at all on less than 1 ohm. You get a low atomizer error

 

[shaunnadan]

My mech mod is currently on vacation leave at the moment. lol

 

[Yiannaki]

Correction- I tried 2x 2ohm coils to give me 1ohm

Aaah okay. I get it now

How many wraps did you do on each coil with 28g?

 

[free3dom]

Also to be honust the ramp time on a duel is to long on the Istick. I had much better results just running a 1.2 ohm single coil with 30g Kanthal

Absolutely...I've done some dual builds with the Kayfun+iStick and the flavour is great but it does take some time to get to it...drives me mad

Single at 1.0 - 1.2 is my sweet spot also (28G)

 

[Arthster]

Absolutely...I've done some dual builds with the Kayfun+iStick and the flavour is great but it does take some time to get to it...drives me mad

Single at 1.0 - 1.2 is my sweet spot also (28G)

I need to give that a try still.

 

[shaunnadan]

Aaah okay. I get it now

How many wraps did you do on each coil with 28g?

That is a good question....

It varied between 7 and 9 and then 11 and then 13 wraps on a 2mm diameter

 

[shaunnadan]

Also found diff results using cotton and using 2mm ekowool.

 

[shaunnadan]

Then I got the http://coiltoy.ermeso.com/ suggestions and that was giving me very diff results

 

[free3dom]

Here is the link for a dual I built in the Kayfun:

http://www.ecigssa.co.za/threads/suywwacs-kayfun-russians-rocket-atomisers.1610/page-28#post-148909

And this is the single @ 1 Ohm I usually do (this is a Kayfun build, but I it very similar in the Lemo):

http://www.ecigssa.co.za/threads/suywwacs-kayfun-russians-rocket-atomisers.1610/page-26#post-139104

 

[free3dom]

Then I got the http://coiltoy.ermeso.com/ suggestions and that was giving me very diff results

I had some issues with coil toy too, so I prefer to use Steam Engine

 

[shaunnadan]

Was driving me insane ! Landed up packing it all off and then using the k1 atty

 

[shaunnadan]

So If I do a single coil build should I cover up the other airhole that's not in use?

Is there any issues with juice flowing in that half of the tank and then flowing out the airhole since there is no coil there

Should I just put a small cotton cloud in that section to absorb and juice that flows from the tank into that section

 

[Yiannaki]

That is a good question....

It varied between 7 and 9 and then 11 and then 13 wraps on a 2mm diameter

Anything more than 9 wraps and its gonna take a hell of a long time to get going.

I think you're gonna need some 32g to get a setup with not too many wraps that can read at 1 ohm.

From past experience, I know a dual 28g with 8 wraps on a 2.0mm ID gave me around 0.65 so I don't think a 30g build of the same will get you to 1Ω, unless you start adding more wraps which you want to avoid in this case.

 

[Arthster]

I usually do my single coils on the tugboat and leave the un used hole open with no cotton, the juice usually absorbs by the cotton for the other coil, but there is a small amount of leaking.

 

[Danny]

I use my atomic on the istick pretty much only with duals. For 30g I do 10 wraps around a 2mm bit, comes out around 1,2ohm, which is the devices median resistance and gives you a reasonable power range imo. 28g is a bit of a challenge for the istick.

 

[shaunnadan]

I think I will go out and get some 30g

Will there still be a long ramp up time ?

 

[Danny]

I dont find it too bad, but Im starting to think I might be building slower heating coils than most people. Under a second, it is almost instantaneous. 28g normally is over a second for me.

 

[Arthster]

I dont find it too bad, but Im starting to think I might be building slower heating coils than most people. Under a second, it is almost instantaneous. 28g normally is over a second for me.

Yeah if I build something that I am going to use on the IPV where I can push wattage I usually go for 28g but on the lightweights like the SVD, MVP or Istick i seem to get better umph out of 30g.