Rda coils

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Zaryk

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Make sure you leads are all tight in the positive and negative posts. Make sure the 510 pin is tight on the bottom of the rda, and if it has it the screw holding the negative post in is also tight.

After installing the coils, before you put cotton in, are you dry firing the coils? If not, you may have hot spots in them. Dry fire them at a low wattage and work out the hot spots by strumming the coil and/or squeezing them together with your tweezers (if the tweezers are metal, do not fire while doing this) and repeat until everything glows nice and even from the inside out. After that they tend to jump up a bit in ohms. Or you can space the coils and they will not have hot spots.

The ohms on pre made coils are an estimate, and while they can be accurate, it can also just as likely be off by a few hundredths of an ohm.

The length of your legs effect the final ohms too, and each rda design can require different lengths of legs.
 

Itsdrew93

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Aug 8, 2018
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Make sure you leads are all tight in the positive and negative posts. Make sure the 510 pin is tight on the bottom of the rda, and if it has it the screw holding the negative post in is also tight.

After installing the coils, before you put cotton in, are you dry firing the coils? If not, you may have hot spots in them. Dry fire them at a low wattage and work out the hot spots by strumming the coil and/or squeezing them together with your tweezers (if the tweezers are metal, do not fire while doing this) and repeat until everything glows nice and even from the inside out. After that they tend to jump up a bit in ohms. Or you can space the coils and they will not have hot spots.

The ohms on pre made coils are an estimate, and while they can be accurate, it can also just as likely be off by a few hundredths of an ohm.

The length of your legs effect the final ohms too, and each rda design can require different lengths of legs.
Thanks just did all of that but if I tight the screw at the bottom of my rda when I putt it back on my mod it says ohms to low so I loosen it and it’s back to 0.206 ohms and now it’s staying at 0.206 ohms is that a bad thing or. Plus do I use this type of wire in Watts mode or temp control as when I put it in temp control it just automatically goes back into watts mode I’m starting to get so confused is 0.206 ohms ok or should I be worried and thank you for your help
 

Itsdrew93

Senior Member
Aug 8, 2018
100
158
Make sure you leads are all tight in the positive and negative posts. Make sure the 510 pin is tight on the bottom of the rda, and if it has it the screw holding the negative post in is also tight.

After installing the coils, before you put cotton in, are you dry firing the coils? If not, you may have hot spots in them. Dry fire them at a low wattage and work out the hot spots by strumming the coil and/or squeezing them together with your tweezers (if the tweezers are metal, do not fire while doing this) and repeat until everything glows nice and even from the inside out. After that they tend to jump up a bit in ohms. Or you can space the coils and they will not have hot spots.

The ohms on pre made coils are an estimate, and while they can be accurate, it can also just as likely be off by a few hundredths of an ohm.

The length of your legs effect the final ohms too, and each rda design can require different lengths of legs.
And I’m using the drop rda is the positive post supposed to be a little wobbly
 

Zaryk

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And I’m using the drop rda is the positive post supposed to be a little wobbly
The positive post is wobbly because you are loosening up the 510 pin. Neither is supposed to be loose. If you are getting ohms too low messages, I would inspect the insulators on the 510 and positive post and also make sure there is nothing on the deck that shouldn't be there like small bits of wire.

What mod are you using?

You said NI30, did you mean NI80? NI80 is wattage wire and doesn't work In temp mode.
 

Itsdrew93

Senior Member
Aug 8, 2018
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The positive post is wobbly because you are loosening up the 510 pin. Neither is supposed to be loose. If you are getting ohms too low messages, I would inspect the insulators on the 510 and positive post and also make sure there is nothing on the deck that shouldn't be there like small bits of wire.

What mod are you using?

You said NI30, did you mean NI80? NI80 is wattage wire and doesn't work In temp mode.
I’m using the smok majesty mode and isit not I thought so because when I first got it the rda which was about a week ago it kept saying atomizer short so I checked on you tube and it told me to loosen the screw at the bottom of the rda which I think it’s called the 510 pin lol
 

Itsdrew93

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Aug 8, 2018
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And wha
The positive post is wobbly because you are loosening up the 510 pin. Neither is supposed to be loose. If you are getting ohms too low messages, I would inspect the insulators on the 510 and positive post and also make sure there is nothing on the deck that shouldn't be there like small bits of wire.

What mod are you using?

You said NI30, did you mean NI80? NI80 is wattage wire and doesn't work In temp mode.
and what is insulators I’m new to this I don’t know much about it
 

Zaryk

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The insulators are the plastic pieces under the positive posts, and under the 510 pin (screw on the bottom). These are there to keep the positive posts separated from the negative (which is the rest of the deck).

Having your positive post loose can cause the ohms to jump around a lot. It can also cause other issues. If I had an RDA that cannot work right with the 510 pin being loose, I call that defective. Maybe taking it into a local shop and having someone take a look would be your best move.

Does the screw in the bottom have a hole all the way through the middle of it? There are two types of these screws included with RDAs anymore, and you should have the one that is solid installed, not one with a hole through the center.(could make a difference)
 

Itsdrew93

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Aug 8, 2018
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.206 is close to .21, round up the 6. Forget about the ohms for a minute and do 6th grade math here. Surely you remember how to do simple math....not trying to insult you, just trying to help.
Lol no worries that’s what I thought was just making sure lol so Yh it’s basically.21 ohms then so is that ok
 
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Zaryk

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Lol no worries that’s what I thought was just making sure lol so Yh it’s basically.21 ohms then so is that ok
Yeah, it's normal to have a .04 ohm deviation from the listed ohms on a coil. Nothing to worry about there.

I would be more concerned about the wobble.
 

Itsdrew93

Senior Member
Aug 8, 2018
100
158
The insulators are the plastic pieces under the positive posts, and under the 510 pin (screw on the bottom). These are there to keep the positive posts separated from the negative (which is the rest of the deck).

Having your positive post loose can cause the ohms to jump around a lot. It can also cause other issues. If I had an RDA that cannot work right with the 510 pin being loose, I call that defective. Maybe taking it into a local shop and having someone take a look would be your best move.

Does the screw in the bottom have a hole all the way through the middle of it? There are two types of these screws included with RDAs anymore, and you should have the one that is solid installed, not one with a hole through the center.(could make a difference)
Thank you and Yh I know about the different types of screws it’s the solid one I’m using I will speak with my local shop tomorrow thank you for your help
 

Coyote628

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Lol no worries that’s what I thought was just making sure lol so Yh it’s basically.21 ohms then so is that ok
Yes, its perfectly fine. I build my own coils to hit betweem .19 and .21. The tolerance is so close that a difference of .01 to .02 is not even noticeable. And the other factors such as wire type, final leg length, etc. and even the type of rda or rta can cause the exact same coil vary by this much. Its no biggie..as long as youre using a regulated mod, there is no problem with small variances. Now if youre using a non regulated mech mod, ya gotta have the resistance pretty tight as to what the battery is capable of out putting. But regulated mods are much safer in this regard and are more forgiving as to resistances used.
 
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