Clapton coil resistance

[fatum]

Does anybody know a good way to calculate the resistance of a clapton coil?
I calculated it first based on the core wire, but the end result was a lot lower. So I would like to know if there's a formula or something to accurately calculate the resistance.

 

[sonicbomb]

The way you already did it is how I do it and yes the resistance will be a little lower, I just allow for that.
You can also use Wire wizard to model it accurately. I personally find this tool difficult to use so good luck.

 

[fatum]

Wow, that's an accurate tool. Thanks for the link!

 

[zoiDman]

The way you already did it is how I do it and yes the resistance will be a little lower, I just allow for that.
You can also use Wire wizard to model it accurately. I personally find this tool difficult to use so good luck.

Something is Funky with that Wire Wizard.

Because when I plug in the Values for a 3.5mm ID 5 wrap Clapton with a 28ga NiChrome 80 Core and a 32ga NiChrome 80 Outer, I get the Same Resistance as I do for a Regular 28ga Coil.

In fact, I can Increase the Outer Wire gauge to 22ga on the Clapton, and the Calculated Resistance doesn't change much.

Maybe I am doing something Wrong? Or maybe there is a Glitch in the Algorithm?

 

[93gc40]

I think the wizard calculates Claptons, with the wrap wire being a wrap rather than part of the conductive path. Basically it assumes you are stripping back the wrap and only inserting the core wires into the terminals.

 

[fatum]

Why would you want to do that? In my mind this wouldn't be good for the wire heating aspects, but I could be wrong.

 

[93gc40]

Why would you want to do that? In my mind this wouldn't be good for the wire heating aspects, but I could be wrong.

Because the wrap of a clapton is really supposed to act as part of the wicking more than part of the resistance wire. It's a way to add surface area to the coil without affecting resistance much. In the beginning Claptons were called Cladded or "self wicking" coils. Wasn't until a guitar player saw them they got their current name. Wasn't till the introduction of the High wattage and TC mods that people started installing them with the cladding in place.

 

[fatum]

Aha, that explains that part, thanks!
So, is there a downside on not removing the wrap at end? Would that negatively affect the electricity flow?

 

[93gc40]

Don't really think it negatively affects electrical flow. I only use single battery mechs. Seems they demand more power than a battery alone can provide to work properly. Lots of metal there to heat up. Yes, I know they can be run on mechs, but they really do their best when you boost the wattage above what a battery alone provides at a given ohm rate.

 

[zoiDman]

Because the wrap of a clapton is really supposed to act as part of the wicking more than part of the resistance wire. It's a way to add surface area to the coil without affecting resistance much. In the beginning Claptons were called Cladded or "self wicking" coils. Wasn't until a guitar player saw them they got their current name. Wasn't till the introduction of the High wattage and TC mods that people started installing them with the cladding in place.

I wonder How Many people today are running a Clapton Coil (or any Multiple Wire coil) using just the Core as the conductor?

I would think that Most People who are Building with Multiple Wires would want a Calculator which Estimates Resistance, Ramp Up Time and Heat Flux for a Coil where the Entire Coil has the same Electrical Properties.

 

[93gc40]

I wonder How Many people today are running a Clapton Coil (or any Multiple Wire coil) using just the Core as the conductor?

I would think that Most People who are Building with Multiple Wires would want a Calculator which Estimates Resistance, Ramp Up Time and Heat Flux for a Coil where the Entire Coil has the same Electrical Properties.

I doubt many new vapers today are striping back the cladding, at all. Most don't know you can do this. Maybe a few using C-coils on a mech. Most everyone I see using these coil is running them boosted on a Regulated device.

Steam-engine.org calculator does all that. Ramp up/down time estimate is what the Heat Capacity value tells you.

 

[zoiDman]

Yeah... I would Imagine based on the pictures I see Posted here on the ECF that the Vast Majority of users are Not using just the Core to make contacts.

 

[fatum]

Well, I now I don't (at the moment), but I'm interested to try it out now. Test if there are any differences between using the full clapton opposed to just the core connecting to the posts. Hmm, experimentation coming up

 

[zoiDman]

Well, I now I don't (at the moment), but I'm interested to try it out now. Test if there are any differences between using the full clapton opposed to just the core connecting to the posts. Hmm, experimentation coming up

To Me, this is the Coolest thing about Building Coils. You can try all kinds of Combinations and Geometries.

And the Only way to Know if Something Works Better (or Worse) is to Try it for Themselves.

 

[EverPresentNoob]

I never thought to strip the wrap off the cores to instal... gonna try that later when my new wire comes in. im having one heck of a time building dual ss claptons that arent low as hell... Everything is coming out around .3 with a single coil...

 

[BoostAddict]

6 wraps of 2.5mm id is coming in at .19 The flavor The flavor

 

[EverPresentNoob]

just popped dual 3mm coils 24/30g 7 wraps. .35 ohms. running at 122 watts on my RX and quite nice. Stripped back the outer wrapping off the legs.

 

[BoostAddict]

Have you noticed any difference? Never tried it myself.

 

[zoiDman]

just popped dual 3mm coils 24/30g 7 wraps. .35 ohms. running at 122 watts on my RX and quite nice. Stripped back the outer wrapping off the legs.

So the $64,000 Question is how does it Compare to the Same set-up with Unstripped Legs?

Did you notice a Change in Ramp-Up Time?

 

[EverPresentNoob]

Im vaping it today at work all day. And tonight Im gonna put the same build only not stripped leads in and will use it for a day to get a comparison.