What creates more resistance?

[mikedcmdva]

The local vape shop here set up my iGo-W for me and the guy did a dual-coil setup. It was wrapped about 4 times per coil. Every time I fired, it would fire up so-so. You couldn't see the coils turning red.

Tonight I noticed one coil might be touching the post, so I took a flat-head screwdriver and gently tried to pry it back a bit from the post, unfortunately, the negative side completely snapped off from the post.

I ended up taking the whole thing apart, because I got a multimeter today and wanted to try this myself. I don't have any coil handy (on order), but my iGo-W did come with a wick. I took it all apart, torched the new wick with a lighter all over, and re-wrapped it using the new wick and the used coil. I only have it in a one coil setup right now.

As soon as I was done, checked the OhM, looked about 0.7 or so, gave it a test fire. Jeebus, that coil immediately fired up all red! Now I am blowing massive clouds, way more than before.

My question is, why is this? I seem to be getting the same reading with the multimeter than I did before, but it feels completely different. Was it just not built so good before? I would guess before had more coil, so more resistance (less vape, more battery life), but the multimeter is reading the same (??)

Help from the pros is much appreciated!

- Michael

 

[bacc.vap]

This info seems a bit confusing. What was your resistance with two coils? 0.7 does'nt sound right for one coil either, unles you were going for 0.35 for two coils.

 

[Thrasher]

This info seems a bit confusing. What was your resistance with two coils? 0.7 does'nt sound right for one coil either, unles you were going for 0.35 for two coils.

the wire broke so it is much shorter after being reattached lowering resistance.


two coil set ups are actually two single coils at double the resistance - to get .7 ohms from two coils each one is actually 1.4 ohms. to the battery it seems like .7 but each coil will still take longer to glow from the higher resistance because you are splitting the power used for that resistance in half.

for example we will say the total setup produces 20 watts. with 10 watts going to each coil which is actually quite low

now with one single coil at the same resistance the power is all going into this one coil causing it to glow faster and heating quicker.

following our example now one coil is receiving the full 20 watts.

 

[bacc.vap]

I was assuming the op used the good coil, then 0.7 does'nt really add up, unless he originally had a 0.35 dual setup.

 

[Thrasher]

lol im just guessing as well, but im assuming that even the good wire would have to be pulled closer or the wraps are smaller etc.

looked about 0.7 or so

not an exact reading either lol

 

[mikedcmdva]

Thank you for the responses, very helpful.

You know, come to think of it, it's possible that the one was already broke when I took the first reading and I hadn't known it yet.

I took a reading earlier, the multimeter read 0.3 itself..and 1.0 when reading the iGo-W.

Nevertheless, it's only one coil now and the coil was shortened and I'm understanding now that its happening due to less resistance. Weird how it read the same earlier before I took it apart. That is my confusion. Then again I am pretty new at this.

 

[crxess]

Broken normally reads - NO CHANGE - open circuit
Shorted will depend on location of short(Which coil) Lower reading or 0.00

Please be careful and read up before doing to much experimenting.

I've been in DC work most of my life(Auto electronics) and have seen mistakes put a car in flames in seconds.

 

[mikedcmdva]

That sounds quite scary. I will make sure to always check my multimeter!

 

[bacc.vap]

So Mike, do you think you will use single coils now or try duals again? I'm just fine with single coils myself.

 

[mikedcmdva]

So Mike, do you think you will use single coils now or try duals again? I'm just fine with single coils myself.

I think I might try the rollercoaster build next but the single coil is doing pretty well for me. Needs a refill often but I can manage. What gauge coil are you using? Oh..I'd like a fatter wick other than what came with the iGo-W spare parts as well.

 

[bacc.vap]

I think I might try the rollercoaster build next but the single coil is doing pretty well for me. Needs a refill often but I can manage. What gauge coil are you using? Oh..I'd like a fatter wick other than what came with the iGo-W spare parts as well.

That's a good question, but I don't have an answer. I've been using the ready made wires I've bought from COV and can't seem to find the gauge anywhere. Maybe if someone knows what it is they'll chime in.