Concept for a replaceable coil

[Cool_Breeze]

I'm thinking a design of coil based losely on a common fuse and holder may have some possibilities for an e-cig coil.

A metal cap at either end could snap into a sitable holder which might be built into the base of a cart/carto. The wick might be a sleeve on a firm underlying component.

End caps could be open as well to allow for exended wicks.

Actual coils for e-cig cartomizers would be much small than a typical fuse and holder.

 

[slimest]

The problem is: if you want a strong connection (not electrical, mechanical) between the ends, you have to use something massive and strong. It will take heat from the heater. If you want a replaceable heater, better use something like separate heater with wick fixed to a separate strong pin.

 

[kosliev]

This got me thinking about 2 scenarios where we use kanthal+SS mesh, but the mesh doesnt have to be oxidized.

1st scenario, a roll of mesh (non oxydized) sits inside the fuse caps, the caps terminals can have two posts soldered, the kanthal coil will roll around the mesh, since the mesh is rolled and firm inside the two caps, there should never be contact.

2nd scenario is reversed, coil sits inside the two caps at a very near diameter to "the edge", and the mesh is rolled around the caps themselves.


There are 3 problems I can think of, one is that its less heat efficient, two I'm not sure how much it will get to heat up while not being in direct contant but close proximity of the mesh, and 3, your typical coil wouldnt have any juice on it and most likely burn whatever ends up in contact and stay always red.

______________________
So yeah not sure it could work, but heres scenario 1 to give you an idea, pick the diameter of the tube that makes up the 2 fuse caps, the mesh will be a bit thinner, coil will be a bit wider, no physical contant, neither the mesh or the coil can touch each other unless you tamper with it, plus you can safely roll the kanthal on something of that diameter so you have perfectly regular coils you can just slide in there

edit.
Of course, if you do it like this the mesh will just short anyways, so the inside of the caps will have to be non conductive, so yeah.

 

[asdaq]

These come in glass too, but I'm not so sure what metal is in the caps, I'd expect cheap as these are disposable items. I was toying with the idea of replacing the wire with a resistor that one could change out the resistor in a circuit, but the size of it all just didn't seem worth it. Mine are about 5mm diameter, but it wouldn' be that difficult to make something smaller, say 2-3mm using pyrex tubing and better quality metal (silver plated something from jewelry/beading perhaps). As for making it useful in an atomizer I don't know, but it sounds like something from the Wizard Stick thread. Maybe the coil inside and one layer of mesh on the outside???

edit: Doesn't qualify for super saver shipping, bummer: Amazon.com: Pyrex Standard Wall Glass Tubing; O.D. x L: 3mm x 4 ft. (1.2m): Industrial & Scientific

 

[nicotime]

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I'm thinking a design of coil based losely on a common fuse and holder may have some possibilities for an e-cig coil.

A metal cap at either end could snap into a sitable holder which might be built into the base of a cart/carto. The wick might be a sleeve on a firm underlying component.

End caps could be open as well to allow for exended wicks.

Actual coils for e-cig cartomizers would be much small than a typical fuse and holder.

It is a good idea CB..run with it...biggest problem is the size so you need to scale it down. Also you would want the connections in a dry area because any connections made in a wet area that doesnt "bite" in to the wire will cause a weak connection IMO. I played around with it a couple years ago on a carburetor type atty with the wires running out of a quartz tube that would snap in to the fuze block...which I got at RS. Then my ADD kicked in and I was off to something else!

 

[Cool_Breeze]

Yes, the coil and materials need to be scaled down from the fuse size. I'm not really thinking literally of a fuse type concoction, rather those principles...firm body, wick and coil somehow overlaying, 'no tool' connections...

In the case that slimest mentioned, if I understand correctly, where the caps and connection might have too much thermal mass and thus render the coil ineffective, there might be a workable solution in something less massive. Depending on the underlying material(s), perhaps 'pins' can provide a better solution and might address the 'wet envornment' concerns. Something akin to Molex pins on a smaller scale...

...may be possible to have a proper sutstrate with an asorbant sheath underlaying the coil and pins to plug into a receiver in the base the carto.