Coil question

[Commie]

Hello there! I'm looking for some advice.

The short version -- thicker wire, thicker wick, same resistance. Seems to take time to warm up, or vapor is cold

The long version:

I found a coil that I like -- 7 loops of 32ga kanthal wrapped around a DID hex wrench. The wick inside it is 2 strands from a 4-strand cotton yarn. Gives me about 1.8 ohm resistance, just the right amount of vapor, etc.

Now I am out of 32ga wire, and have a big spool of 30ga. Since I can't fit enough loops of the same diameter between the posts, I tried wrapping it around a toothpick. Larger diameter, 8 loops gives me the same resistance, and fits 3 strands of my wick.

Now my vapor feels cooler, and there's less of it. I end up having to fire it for a few seconds to get some warmer vapor. When I do that, it ends up producing more vapor, and the wick runs dry (even though it's not too tight in the coils, there should be plenty of flow).

I wonder -- is it because my wick is thicker and takes some time to warm up, or is it because the coil wire itself is thicker? Should I try to lower the resistance of the coil, or keep it the same and try to reduce the diameter of the coil?

 

[vapdivrr]

uaually thicker wire and less wraps , lower resistance and the coils heat up alot faster, thicker vapor. on my genny i find that 28g wire and less wraps gives me a much thicker and warmer vapor also the thicker the wire and lower resistance means that the coils will heat up faster then more wraps of thinner wire.

 

[EDO]

Well every one knows 28g is more responsive than 30g which is more responsive than 32g...right? Well not really. It depends on how you compare them. Lets say you are comparing them using the number of wraps. Lets say you do 3 identical 4 wrap coils ....with the only difference being the gauge of wire used in them. Well in that case 28g > 30g > 32g in being most responsive. Now lets say you compare the devices by trying to build coils that are the same ohms.... lets 1.8ohms....now if you compare the responsiveness of the coils...the 32g>30g>28g. Yes in theory they should perform the same but that is only if there is no wick in the coil. Once the wick is inserted...it acts like a heat sink and everything changes....the wire with the least amount of contact to the wick (the higher resistance wire) will be the most responsive.

 

[Commie]

Yes in theory they should perform the same but that is only if there is no wick in the coil. Once the wick is inserted...it acts like a heat sink and everything changes....the wire with the least amount of contact to the wick (the higher resistance wire) will be the most responsive.

Ack. Gotcha. I think that's where my problem is. I guess I'll have to go back to 32ga wire

Thank you for the detailed explanation!