StemPod by MPL

XpeeN

Well-Known Member
I'm not using an AF compatible mod. I don't think it's the wrong value, but yes probably the coils. Again that's why I asked for specific coil recommendations, but aside from recommendations for the mesh heaters and thick gauge wire, no one has been able to recommend prebuilt coils that I could just order.
Alright, I'll try to help, You can try this (316L 22ga - add a wrap or two if needed) or this (6 probably) for starter. Although I highly recommend coil your own with 316L wire. It's much cheaper, easy to do, you can experience with different types of heater and number of wraps, and you have lots of wire haha. But anyway it's gonna be much harder to set up the TCR without watching the resistance as it changes while heating the coils. I'd spend that $40 to get AF compatible mod.
BTW, can you give more info about your current setup?
 
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simba

@weedanwine
Thanks for the links, they look very similar to coils I've already got, not tried putting extra coils in them though.




Currently running the Stempod on an Aspire NX100. Also you might be right about getting an AF compatible mod.
 
simba,
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XpeeN

Well-Known Member
Thanks for the links, they look very similar to coils I've already got, not tried putting extra coils in them though.




Currently running the Stempod on an Aspire NX100. Also you might be right about getting an AF compatible mod.
I wish I could've help you to make it work with what you already own... Basically, we should pursuit the resistance you're at while hitting at wattage and search the correspond TCR value , but idk how you should do that without actually tracking the resistance. You can try and use some ohm calculators but idk how accurate it'll be.
 

simba

@weedanwine
I wish I could've help you to make it work with what you already own... Basically, we should pursuit the resistance you're at while hitting at wattage and search the correspond TCR value , but idk how you should do that without actually tracking the resistance. You can try and use some ohm calculators but idk how accurate it'll be.

I don't understand what you mean by pursuit the resistance while hitting at wattage. Do you mean to check what wattage it doesn't glow at and find a corresponding TCR value?
 
simba,
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XpeeN

Well-Known Member
I don't understand what you mean by pursuit the resistance while hitting at wattage. Do you mean to check what wattage it doesn't glow at and find a corresponding TCR value?
The mod uses the resistance to calculate the tempature. So when you're taking a draw on watts, the coil probably "sits" on a kinda fixed resistance with a little changes based on your draw (and wattage). With AF, I can see the resistance rises and changes while heating and hitting respectivally, so when I'm taking a strong hit and look at the resistance while hitting, I'm finding the upper limit that I need, so I'm searching the TCR value that will give me that resistance while putting kinda high temp, like, 220C or so, so it'll actually be my upper limit (ofc, I'm checking that the coils aren't glowing at this resistance).
 

simba

@weedanwine
Yeah I figured I'd just keep playing with the settings until I found something that was producing vapor but no glow.
 
simba,
Yeah, but you can use ss316l coils with TCR, and you'll avoid glowing too without the sacrifice of heating time like those ceramic heaters.


Have you tried a spiral coil? I found it to work pretty well with velocity decks.
Spiral coil like one posted just earlier?

This reminds me to show a pic of another coil design that can maximise the coil space in the stempod with 24-26 gauge or 20-22 to take the build space the limit but with the 22g it needs literally just 1mm extra head room above the coil posts and screen to avoid shorting, maybe 20g version is too chunky not sure not available in my country. A spacer or oring around the stempod deck to lift the chamber up 1mm can do the trick though maybe not ideal? And to make the coil it’s definitely harder than the average coil it’s fiddly, you need a diy coil jig (just simple 2 nails/posts and a piece of wood) have to take a pic too of it.

I just simply don’t have time to try this for a while but hope others can try it to see if it’s good, it’s on paper much better than the 22g twisted coil in my earlier post.
 
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XpeeN

Well-Known Member
Spiral coil like one posted just earlier?
No, spiral coil like this one:
XvSxJpE.jpeg
 
XpeeN,

BigJr48

Well-Known Member
For some reason, the image at my previous comment doesn't load for me. Do you still see the image?
Anyway, It works great on my RTA DIY, I'm waiting for a 18mm stem to arrive so I can test this heater at a setup more similar to a stempod.
Yes I saw the image and was interested in it.
 
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