First RDA Build

[bentnectar]

So I got my Magma clone from infinite today. Got my first build done. 30awg wire, 11 wraps, wrapped around a 2.0mm screw driver, 2.3 OHM, and rocking it on a itaste vv3.






Can't wait to meet up with my buddy today or tomorrow he is gonna let me borrow one of his mechs for a bit.

 

[joelmora89]

You gonna have have to do less wraps or a thicker wire for a mech. 2.3 ohms is way too high.

 

[bentnectar]

oh i am aware of that the only reason i went so high on the resistance was due to the limitations of the itaste. it is still soo much better than the nautilus tank i was using. i was thinking of shooting for a .9 or 1 build using a parallel or dual coil.

 

[bentnectar]

I still need to get an ohm meter i went to the 3 shops i know of today and they were all sold out. so I'm gonna check the shops in peoria il when i go there today hopefully they have one if not ill just have to wait to build on the mech

 

[HecticEnergy]

Ohm reader - very convenient but i think the margin of error is like .1 ohms. A multimeter from like home depot would be more accurate.
Mech vs Regulated - I'd stick with regulated while you get more comfortable with building. Also, mechs are nice, but the regulated mods on the market make their functionality obsolete IMO. Make sure you don't exceed the continuous amp rating on the batteries in your buddies mech.. if you value your hands and face anyway.
I've got a mech and a regulated (30w) mod. I still usually stick around 1.4 ohms as you can crank up the wattage and get a similar vape as you do with a mech. The benefits of sticking regulated as you get a consistent vape, where with a mech your vape quality drains with the battery voltage.

Anyway, Welcome to the party! good looking single coil! have fun and be safe

 

[InTheShade]

You can use the VV3's ohm reader to build on. It's actually quite safe as it will also tell you if you have a short without having to fire the device.

While I admit the VV3 is not the ideal device to use a dripper on, the Magma works surprisingly well even in the mid-resistance range. Try a 1.4 - 1.6 ohm microcoil on it. 5-6 wraps on your 2.0mm screwdriver using the 30ga. should get you pretty close to this.

Great flavor, decent vapor and you'll be surprised how well that little battery will perform.

 

[gopher_byrd]

I still need to get an ohm meter i went to the 3 shops i know of today and they were all sold out. so I'm gonna check the shops in peoria il when i go there today hopefully they have one if not ill just have to wait to build on the mech

You can get a multimeter from Home Depot, Lowes, or Walmart for around $20. There are lots of vids on youtube on how to use one for measuring resistance and battery voltage. Here is one for example:
https://www.youtube.com/watch?v=69GFyPbcCOk

 

[bentnectar]

yeah i have been doing my research i just don't have the money for the regulated mod i want at the moment. I have also been trying to measure out exactly the length of the wire that i am wrapping bec it is length that dictates resistance. for my first coil i was shooting for 2 ohms and to get the length i was looking at i took the resistance that i want and divided that by the resistance of the wire in mm so 2/.0274921 = 72.74817 mm so convert to cm and thats roughly 7.2cm of wire i need to wrap. I over shot by about a 1cm and that gave me the 2.3 ohm resistance. I'm still learning but practice makes perfect.

 

[InTheShade]

yeah i have been doing my research i just don't have the money for the regulated mod i want at the moment. I have also been trying to measure out exactly the length of the wire that i am wrapping bec it is length that dictates resistance. for my first coil i was shooting for 2 ohms and to get the length i was looking at i took the resistance that i want and divided that by the resistance of the wire in mm so 2/.0274921 = 72.74817 mm so convert to cm and thats roughly 7.2cm of wire i need to wrap. I over shot by about a 1cm and that gave me the 2.3 ohm resistance. I'm still learning but practice makes perfect.

Try Steam Engine | free vaping calculators it'll help when calculating wire length. The heat flux calculation is interesting to play with too.

 

[bentnectar]

Try Steam Engine | free vaping calculators it'll help when calculating wire length. The heat flux calculation is interesting to play with too.

That is awesome i will have to play around with it!

 

[HecticEnergy]

I use steam-engine.org to calculate coil wraps. It true that length of wire dictates resistance, but 12 wraps around 7/32 drill bit of 28 ga wire will give you the same length of wire and thus the same resistance (given a small marine of error for tighter/looser wraps and leg length to the posts). Personally I never really pay attention to wire length directly.. I pull of enough to get the job done (eyeball it), do my wraps, set the coil and trim off the excess. I think thats probably common practice.

 

[readeuler]

Ohm reader - very convenient but i think the margin of error is like .1 ohms. A multimeter from like home depot would be more accurate.

Just be careful. I have a really cheap Harbor Freight multimeter, and it's absolute garbage for resistance; even touching the probes together very tightly, I get really large lead resistance, like 1 ohm or more. Not to mention, it varies wildly for actual measurements, and only reads to tenths of an ohm. I do use it all the time to check battery voltage though, so there's that. I assume it works OK, since it consistently reads around 4.19 volts after a fresh charge.

Conversely, I picked up a really nice 510 ohm meter from USA Ohm Meters. The wiring is immaculate, feels sturdy and well-constructed, and reads to the thousandth of an ohm, 3 digits after the decimal point. You'd have to order it from California, but I won't buy any other kind, if this one ever gives out.

Granted, the USA ohm meter was around $20, while the Harbor Freight cheapo was like $7, but I'd recommend the USA one all day.

I never owned an ohm meter until I had a mech, and even then, used one from a VV device until I was getting below 0.6 ohms.

 

[HecticEnergy]

Just be careful. I have a really cheap Harbor Freight multimeter, and it's absolute garbage for resistance; even touching the probes together very tightly, I get really large lead resistance, like 1 ohm or more. Not to mention, it varies wildly for actual measurements, and only reads to tenths of an ohm. I do use it all the time to check battery voltage though, so there's that. I assume it works OK, since it consistently reads around 4.19 volts after a fresh charge.

Conversely, I picked up a really nice 510 ohm meter from USA Ohm Meters. The wiring is immaculate, feels sturdy and well-constructed, and reads to the thousandth of an ohm, 3 digits after the decimal point. You'd have to order it from California, but I won't buy any other kind, if this one ever gives out.

Granted, the USA ohm meter was around $20, while the Harbor Freight cheapo was like $7, but I'd recommend the USA one all day.

I never owned an ohm meter until I had a mech, and even then, used one from a VV device until I was getting below 0.6 ohms.

2 things:
I guess you get what you pay for - I have a multimeter from doing small component electrical work, I think it was $40, so it's most likely higher quality than the $7 HF one
I too relied on the built in ohm reader in regulated mods for a while. I hesitate to recommend this to others as quality of the ohm readers very from product line to product line, and in lower quality devices it may very device by device within the same product line.

 

[readeuler]

2 things:
I guess you get what you pay for - I have a multimeter from doing small component electrical work, I think it was $40, so it's most likely higher quality than the $7 HF one
I too relied on the built in ohm reader in regulated mods for a while. I hesitate to recommend this to others as quality of the ohm readers very from product line to product line, and in lower quality devices it may very device by device within the same product line.

Yes, absolutely. I guess that was the intended moral of the story: Just because a multi-meter has one job (Ok, well, several), don't expect them all to do it well. I just didn't want the OP to rush out and waste all of $7 expecting it to work out

 

[bentnectar]

i imagine a dual coil set up would not work very well with an itaste i figure it will take to lng to heat up? what does everybody think?

 

[HecticEnergy]

I'd play with it and find out
twice the wire, half the resistance, I think it would be fine with 28 or 32 ga wire.

 

[bentnectar]

yeah i have 30g wire i will have to do some playing around tonight. I'm going to my buddies to watch the UM live stream i think set break will be a good time to do some tinkering

 

[bentnectar]

well i tried a dual coil build last night and it kinda worked. it would not heat up fast enough so i scrapped it and went back to a single coil 8 wrap build. not enough power on the itaste but what you gonna do.

 

[HecticEnergy]

8 wraps of what on what? What was your overall resistance?


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[bentnectar]

8 wraps of 30g coming out at 1.88 ohm i believe