Quick Resistance Question

[ralph029]

Hello folks,Been here lurking (learning) for a little bit now and finally have a specific question. I'm new to building so I thought I'd start perfecting my wicking technique first before I ventured into coil building. I wanted to try something different and went with a Fused Clapton coil in my Smok Spiral RTA. I put the coil on my 521 mini to work the coil first and check the ohms. On the meter it showed as 1.08 ohms. Once it was installed on my Lavabox M it showed as 0.57 ohms. What am I not understanding? Why half on the mod?

 

[skt239]

Is it a single or duel coil?

 

[ralph029]

Just a simple single.

 

[skt239]

Just a simple single.

Did you pluse and strum it before checking the resistance again on the mod?

 

[Brad Mitchell]

Make sure the screws are tight. And see if it still reads 1.08 ohm on the 521 mini.

Other than that maybe one of the devices are reading incorrect.

Maybe try and see if anything else has a different resistance reading

 

[ralph029]

Yep, did both. Got the coil burning from the inside out evenly. Burned all the junk off it. That's when I noted the 1.08 ohm reading.

 

[gobbly]

What does a coil calc say your coil should be? What people have suggested about checking connections and things is your first step. After that, I'd start thinking a malfunctioning device.

 

[ralph029]

I'll have to call the shop I bought the coils from and ask about the build. I know, I know, I should have built it myself Like I said, I'm taking it one step at a time to get the techniques right I only have the one deck at the present but should have a Mage here in the next day or two so I can check a couple with the same build. I made sure that the connections were good and solid. I think I'll break out my Fluke next time too and manually check the resistance as a third check.

 

[ralph029]

I bought a couple of these Fused Clapton coils so just for shits and giggles I measured the resistance across the second coil with my Fluke. Still shows 1.1 ohms. Then I hooked up to eScribe and turned on the device monitor and it shows the same thing as my Lavabox at 0.591 ohms. Weird.

 

[gobbly]

well, escribe is just getting the resistance from the mod you hook up so if that was the lavabox, then you wouldn't expect a difference.

 

[ralph029]

I figured that was the case but was just trying everything at my disposal

 

[skt239]

Nothing wrong with buying coils. Advanced Vapor Supply practically gives away pre made stainless steel claptons that work great. I wrap my own simple coil but I'd rather just spend $10 and have coils for a few months when it comes to the fancy stuff.

 

[SirRichardRear]

I bought a couple of these Fused Clapton coils so just for shits and giggles I measured the resistance across the second coil with my Fluke. Still shows 1.1 ohms. Then I hooked up to eScribe and turned on the device monitor and it shows the same thing as my Lavabox at 0.591 ohms. Weird.

well if your fluke and ohm meter both say around 1.1 and your mod says .0591 then i'm thinking it may be a mod issue

 

[ralph029]

Could it be the RTA? Next time I fill it, I'll pull it apart are read across the posts.

 

[ej1024]

1.08/2=0.54
Check the battery in the ohm meter...
There's some shitty 521 mini out there especially the ones AMAZON SELLS

 

[SirRichardRear]

1.08/2=0.54
Check the battery in the ohm meter...
There's some shitty 521 mini out there especially the ones AMAZON SELLS

he's only using a single coil and he ohmed it on a fluke meter and it matched the CM tab

 

[ej1024]

he's only using a single coil and he ohmed it on a fluke meter and it matched the CM tab

Now this shit is

 

[BKTOAD]

Did you reset the resistance on your mod? Like, is it possible it is still locked on the resistance from a previous atomizer/coil?

Also, make sure the atty is screwed in just snug on the coil tab. Can get a false reading if it is too tight or too loose, I have found. (Edit-just re-read where you checked the coils on your fluke meter. So this is likely not the culprit)

 

[Brad Mitchell]

What does the fluke say the resistance of the tank is?

 

[ralph029]

I thought the same thing about the the setting on the mod. Figured I was going to have to announce what a dufuss I was but I must have instinctively done it. I did change it and change it back just to be safe. I'll have an empty tank today and will break out the Fluke. I think I'l shoot an email to Volcano as well and see what they have to say. I'll keep you all posted. Thanks very much for all the responses.

 

[Everpresentnewb]

another thing you can try is measure a known resistance length of wire on the atty. Such as 24G Kanthal has a resistance of 2.07 per foot at 68 degrees F. So take 1 foot of it, and mount in on your deck. make sure it does not touch anything including itself and your resistance should read 2.07. then add another loop on the other side simulating the worlds worst possible wrapped set of dual coils and your resistance should now be 1.035.

This will make up for any possible disparity's in your bought coils. I have bought premade kanthal coils that were not hte resistance I thought they should be and found that they were in fact NOT kanthal at all. Not saying this happened, but its a thought.

 

[ralph029]

simulating the worlds worst possible wrapped set of dual coils

Classic!

 

[gobbly]

Yeah, if 2 devices say x and a third says y, that's strong evidence. Volcano has good support in my experience, if it's the mod they'll get it taken care of. Make sure to let them know all the stuff you've done, what other devices are saying, etc. The more troubleshooting you can tell them you've done the faster they can fix any issues.

 

[ralph029]

Update time if anyone is interested... I ran my tank out and pulled it apart to check resistance across the addy. I decided that while it was apart, I'd run all the parts through the ultrasonic with a couple drops of Dawn. Once everything was dry, I checked the resistance across the posts and my meter showed a couple kOhms. Then I checked the coil and voila, .6 ohms. I got everything reassembled and rechecked and again, .6 ohms. I pulled the other coil out and still got 1.1 ohms so I ran it through the ultrasonic and what do you know... .6 ohms. Really? Dirty coils? I've worked on electronics from aircraft to motorcycles and have only seen that kind of drastic change where corrosion was involved. I wish I had checked the coil prior to cleaning. Maybe the firing throughout today's vaping burned off the junk that was causing the resistance. I did notice a definite change in taste today after a couple hours of use. I'd like to chalk the whole thing up to FM but I guess dirt or debris was the culprit. Thanks everyone for your help and suggestions!