Coil firing questions
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Dual coil setups are a tricky lot. The coils have to be pretty much identical. Not just in the number of wraps but also lead length, compression, contact with the posts...etc. Usually when I find one firing out of whack like you are describing (and I know they are the same) I end up finding a loose connection or a popped leg on one coil.
Good point, wshanncap. Tightening legs is a good idea.
When mine don't fire evenly, I'll compress the slow one with tweezers after getting it glowing red. Then the other, and alternating a few times. That typically helps.
Also rubbing the inside of the coil with something metal helps with hot legs (anyone care to explain why this helps? I'm completely stumped), and it seems to help with uneven glowing too. Just find something that fits easily, and slide it side to side inside the coil.
When mine don't fire evenly, I'll compress the slow one with tweezers after getting it glowing red. Then the other, and alternating a few times. That typically helps.
Also rubbing the inside of the coil with something metal helps with hot legs (anyone care to explain why this helps? I'm completely stumped), and it seems to help with uneven glowing too. Just find something that fits easily, and slide it side to side inside the coil.
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Never heard of that before readeuler, I'll try it next time I have an issue - thanks.
OP - Two good posts above. I'll just add that for me this issue is because I've not compressed the coils evenly and is fixed by a quick squeeze of the slow-to-heat coil.
Check the one heating faster to see if it has an overlapping coil. This is usually the problem with my coils in this scenario. I usually smash the slow coil together a bit more. And inevitably have to rebuild the coils within a day or two. Once they have been fired and overlapping is the issue it is difficult for me to fix.
This may be something different than you're talking about, but sometimes after I squeeze a coil the wire gets a bit squished and uneven. These coils are so small that I can't see them very well, I can only see that they aren't firing evenly. When that happens I take a sewing needle and rotate it inside of the coil to straighten the wraps out.
Yeah, I saw it on Super X's "Look mom, no torch!" nicrocoils video. He just rubbed a Luer needle back and forth inside the coil, and boom - no more glowing legs. It was weird!
It's especially helped me with twisted wire. That stuff can get hot legs at the drop of a hat, and the "one weird trick" helps a lot.
Ensure the wraps are equal. Sounds flip but I've done it before. Six wraps on one, five on the other. I have a jewelers loupe in my vape tool box, I double check every time.
The "legs" need to be fairly equal. This generally is easy to eyeball and only if they are way off will they affect your coils the way you're describing.
Connections are good. This is super common. You think it's all tight, recheck and they'll be loose. Also, some rebuildables have a tendency to cut your leads. I've noticed this is a big problem with every cheap RDA I own. It can clip the wire in such a way it's not immediately obvious.
Damaged coil. As mentioned above, you can squeeze them and cause overlap. I've done this a lot and pretty much ruins the coil.
You mentioned doing ten wraps. That's a lot of wraps and amplifies any issue. The fewer the wraps, obviously, the easier it is to get them consistent. You might want to try a thinner wire with fewer wraps or larger coils with fewer wraps.
If all else fails, maybe one of your posts are bad. Never had that happen but I'm sure it could.
The "legs" need to be fairly equal. This generally is easy to eyeball and only if they are way off will they affect your coils the way you're describing.
Connections are good. This is super common. You think it's all tight, recheck and they'll be loose. Also, some rebuildables have a tendency to cut your leads. I've noticed this is a big problem with every cheap RDA I own. It can clip the wire in such a way it's not immediately obvious.
Damaged coil. As mentioned above, you can squeeze them and cause overlap. I've done this a lot and pretty much ruins the coil.
You mentioned doing ten wraps. That's a lot of wraps and amplifies any issue. The fewer the wraps, obviously, the easier it is to get them consistent. You might want to try a thinner wire with fewer wraps or larger coils with fewer wraps.
If all else fails, maybe one of your posts are bad. Never had that happen but I'm sure it could.
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