Fluctuating resistance

[sahebzaade]

I can't post in the rba thread yet. But figured I can try here.

I am a new vaper and am trying to build a micro coil for my fasttrack erlkonigin clone.

This is my second attempt (the first one being successful). This time around I notice I see a lot of fluctuating resistance reading for my coils. I generally read it through my itaste vtr or vv. Both of them exhibit the same behavior.

I am rolling a micro coil on 32g kanthal. About 7 to 8 wrap on a screwdriver slightly bigger than a tooth pick. I know I don't have exact measurements, but nevertheless, when I put the coil on (I checked for shorts, don't see one, it is clear of all other parts except the screw) everytime I see a different resistance reading varying from 2.3 to 5.5!

What might cause this?

 

[supertrunker]

A loose connection. Make sure the screw is tightened down.

T

 

[edyle]

the post screws.

when you fire the coil and things get hotter the post screws can come loose and not make good contact.


(the other issue is if you over tighten the tank/topper onto the mod then the resistance goes too low )

 

[roxynoodle]

Most likely its a loose post screw as the Erlk has a very steady base.

If that doesn't solve it, make sure the 510 pin in the atty is tight. Its not an adjustable 510.

Also, it has a short 510 and doesn't connect well with some mods. If that's the problem, you can try cutting a piece of credit card, drilling a hole, and putting it just under the head of the 510 pin to extend it a bit.

 

[Robert Cromwell]

With 32 ga likely the post screws not grabbing it tight enough.

 

[Wolfenstark]

All of the above

 

[sahebzaade]

Thanks for the replies.

I notice this is happening even in my kayfun lite across all of my three batteries. I tightened the screws, but still the same result. Should I ditch the 32g? What's the best gauge wire to avoid this problem?

 

[ItsJustJason]

I use mostly 26G or 28G Kanthal, but I build for flavor. Are you looking for flavor or clouds bruh?

 

[sahebzaade]

Can I have both? . Guess If I have to pick, it's flavor. I can do with some vapor but doesn't have to be huge clouds.

 

[Rsunderl]

Hi sahebzaade and welcome to the forum!

28 gauge is a good starting gauge. Once you get used to building with that, you can branch out to other gauges.

And yes, you can have flavor and decent clouds - it all depends on how you build and what power you use. It's a learning curve, but here's a pretty good read on the subject:
My thoughts about sub-ohm and latest VV/VW devices...

Hope it helps and Happy Vaping!

 

[wheelie]

32g is very light and hard to work with. Try making 5 wraps and it should be around 2 to 2.5 ohms. Get yourself some 28 as others have said. 7 wraps 0f 32g is 2.5 ohms and you are getting to the extreme high side for your device to run. CHEERS

 

[hiram13pm]

With 32 ga likely the post screws not grabbing it tight enough.

With that fine of a wire gauge, this is probably it. I've been able to correct this at times by leaving some extra lead on the coils, and wrapping them up the post. Once you've got the leg of the coil through the post hole, run it up the post & wrap it around the screw itself... tighten the screw down & trap the wire underneath the screw head (one turn underneath the screw should do it). Tricky, but you're guaranteed good contact.

 

[sahebzaade]

So here is an update.

I made 2 coils out of 28G wire (7 wraps) for two of my erlkonigins. I still get fluctuating resistance across 3 devices. I also got a new lemo 2 which came coiled and wicked out of the box. Even that is showing fluctuating resistance. Is there something wrong with my devices?

 

[englishmick]

So here is an update.

I made 2 coils out of 28G wire (7 wraps) for two of my erlkonigins. I still get fluctuating resistance across 3 devices. I also got a new lemo 2 which came coiled and wicked out of the box. Even that is showing fluctuating resistance. Is there something wrong with my devices?

Happening with multiple tanks and a prebuilt Lemo seems to rule out your coils or tanks. Fluctuating resistance can be caused by a weak 510 connection. Maybe the posts in your mods have been pushed down too far. Maybe try popping the posts up a little on your mods. Or extend the 510 pin on the Lemo and see if that helps.

 

[IMFire3605]

Take a thin sturdy paper clip and use it to try and wiggle the 510 pin on your mod up and press the sealing gasket down, older Innokin mods are notorious for this. Also use a q-tip with a little rubbing alcohol on it, and use it to clean up your 510 connection on you mod.