Interest Check: Custom Resistance Atomizers - e-cigarette-forum.com • The place for electronic cigarette reviews, news and chat

nerf · 10-17-2009, 10:09 PM

So, I was talking to one of my chinese suppliers the other day, and found out that I can get atomizers of any resistance from 3 ohms and up in 901, 801, 510 or 401 packages.

Basically, this means instead of trying to cater the voltage to the atomizers, you can cater your atomizer to whatever voltage application you'd want. In my testing, it seems like the sweet spot is 8-12 watts, and using Ohm's Law you can easily figure out what resistance would give you this at any given voltage.

Wattage = Voltage*Current

Current = Voltage/Resistance

So, if we want 10 watts, and our peak voltage is 7.4, subtract about half a volt to give you some room for the drop and battery and do the math.

10 = 6.9*(current)
Desired current = 1.45A

1.45 = 6.9/x
1.45x = 6.9
x=4.8 ohms

So, running 7.4 volts (2x 3v cr2s or cr123s), to get 10 watts you'd want a 4.8 ohm resistor.

Basically, I want to know if theres interest in these - I'm not a supplier, I don't have a storefront, and the only reason I stock the connectors is because I saw that people still needed them after the initial group buy. MOQ for each resistance in a certain package looks like it's going to be 10, although I'm trying to get it down to 5. Looks like they're going to cost about $10 per, so I'm figuring selling them for $11 to cover my time. If I see a certain resistance/package is really popular, I'll consider keeping a few on hand for those that inevitably miss the first order.

Please post here if you're interested, I'd prefer a post over a PM, as my PM box gets pretty tangled with all the connector stuff pretty quick - being able to take a look at this thread is a lot easier to manage.

(Total MOQ will probably be 100+, so if theres not enough interest the whole idea will likely get scrapped)

Hangtime · 10-17-2009, 10:18 PM

Sounds very interesting nerf.

nbaagain · 10-17-2009, 10:21 PM

I'm in for sure for some 801s that would be able to handle x2 3.6 batteries (whatever wattage, ohm, voltage that is).

nerf · 10-17-2009, 10:27 PM

I'd be more than happy to do the calculations for people who don't trust their own math as well, I'll just need to know what wattage you want and what voltage you're running.

A 901 passthrough should be pushing about 7.2 watts for comparison. A 510 on batteries is about 7 watts as well. A standard 901 on batteries (4.2v, aftermarket batts) is running 5 watts.

Running 2x cr2s or cr123s in series without a regulator or some voltage dropper is going to be pushing 15 watts or so.

So, 7-10 watts should be the goal, but thats just my opinion.

ETA: Remember that the minimum is 3 ohms, I can't get them made any lower than that, so you're not going to get exact 510 performance out of a 901 on the same (low) voltage, but you'll get close. At higher voltage the minimum doesn't matter, you'll be increasing the resistance, not decreasing it.

Big Daddy · 10-17-2009, 10:30 PM

I'm in for 5 or more 801s that would be able to handle x2 3.6 batteries (whatever wattage, ohm, voltage that is).

Shreck · 10-18-2009, 01:03 AM

Interest level here (for me anyways) might depend on how they vary the resistance. Are they making the atty coil longer or are they using different wire diameter wire to make the coil. It almost seems as though a larger wire diameter might last longer. Am I correct in this thinking? If not please feel free to correct me.

nerf · 10-18-2009, 02:39 AM

Quote:

Originally Posted by Shreck

Interest level here (for me anyways) might depend on how they vary the resistance. Are they making the atty coil longer or are they using different wire diameter wire to make the coil. It almost seems as though a larger wire diameter might last longer. Am I correct in this thinking? If not please feel free to correct me.

I don't think it'd matter either way, it seems like from most testing people have determined the weak point has always been the solder joint, not the the wire itself separating under heat. Moreso, increasing the resistance isn't necessarily a means to make atomizers 'last longer', but get a desired vaping result without complicated electronics. There are pen lasers you could easily fit 2x 10440s in series into, but trying to fit any sort of regulation in there simply wouldn't work - this would allow you to get the '5v' result from 7.4v without adding anything extra.

Guitarslinger · 10-18-2009, 04:51 AM

Damn-this is great. I just started maodding myself, and was doing some calculations (Ohms law) figuring voltages/power/ etc. This would surely make things much easier-like you said Nerf, many of the actual containment items people might like to use will not accomodate much more in the way of voltage reduction, etc, and this will also cut down on the overall cost as far as buying the required components to do the reduction (not to mention less soldering/wiring etc

. Once I get deeper into this I'd more than likely be interested in buying some as well (spent like 3-400 bucks the last 2 weeks buying assorted goodies lol.) At the very least it may be worth telling the manufacturer to keep these items in stock as well for future orders. I'm sure it's just a matter of time before someone (hint) opens a e cig/modders supply specialty type shop. Thanks for all your valuable time and input btw. Now, back to modding........

nerf · 10-18-2009, 06:01 AM

Doublepost, I'm bad at the internet.

doots · 10-18-2009, 06:18 AM

I am losing a lot of 801 attys at 6volts and was wondering if it's the solder joints that are failing rather than a break in the coil itself due to 6 volt usage?

And are 5volt users seeing the same 801 atty failures? vs 6v?

I've went to 510 attys using 6v because they never fail.

I have not seen this answered really because most users probably dont know how to acertain what caused the failures to begin with.

I'd be interested in the 801s if it would mean less failures.

Also if anyone else is experiencing 801 failures at 6v's?

I get about 1-4 days out of an atty. Getting very expensive to say the least.

10-17-2009, 10:09 PM	#1
nerf Super Member Join Date: May 2009 Location: DFW, TX Posts: 338	Interest Check: Custom Resistance Atomizers So, I was talking to one of my chinese suppliers the other day, and found out that I can get atomizers of any resistance from 3 ohms and up in 901, 801, 510 or 401 packages. Basically, this means instead of trying to cater the voltage to the atomizers, you can cater your atomizer to whatever voltage application you'd want. In my testing, it seems like the sweet spot is 8-12 watts, and using Ohm's Law you can easily figure out what resistance would give you this at any given voltage. Wattage = VoltageCurrent Current = Voltage/Resistance So, if we want 10 watts, and our peak voltage is 7.4, subtract about half a volt to give you some room for the drop and battery and do the math. 10 = 6.9(current) Desired current = 1.45A 1.45 = 6.9/x 1.45x = 6.9 x=4.8 ohms So, running 7.4 volts (2x 3v cr2s or cr123s), to get 10 watts you'd want a 4.8 ohm resistor. Basically, I want to know if theres interest in these - I'm not a supplier, I don't have a storefront, and the only reason I stock the connectors is because I saw that people still needed them after the initial group buy. MOQ for each resistance in a certain package looks like it's going to be 10, although I'm trying to get it down to 5. Looks like they're going to cost about $10 per, so I'm figuring selling them for $11 to cover my time. If I see a certain resistance/package is really popular, I'll consider keeping a few on hand for those that inevitably miss the first order. Please post here if you're interested, I'd prefer a post over a PM, as my PM box gets pretty tangled with all the connector stuff pretty quick - being able to take a look at this thread is a lot easier to manage. (Total MOQ will probably be 100+, so if theres not enough interest the whole idea will likely get scrapped)

10-17-2009, 10:18 PM	#2
Hangtime Super Member Join Date: Jul 2009 Posts: 471	Sounds very interesting nerf. __________________ www.nu-vapor.com

10-17-2009, 10:30 PM	#5
Big Daddy Full Member Join Date: Mar 2009 Location: Illinois Posts: 92	I'm in for 5 or more 801s that would be able to handle x2 3.6 batteries (whatever wattage, ohm, voltage that is). __________________

10-18-2009, 04:51 AM	#8
Guitarslinger Full Member Join Date: Oct 2009 Location: Central Illinois Posts: 45	Varying atty resistance Damn-this is great. I just started maodding myself, and was doing some calculations (Ohms law) figuring voltages/power/ etc. This would surely make things much easier-like you said Nerf, many of the actual containment items people might like to use will not accomodate much more in the way of voltage reduction, etc, and this will also cut down on the overall cost as far as buying the required components to do the reduction (not to mention less soldering/wiring etc . Once I get deeper into this I'd more than likely be interested in buying some as well (spent like 3-400 bucks the last 2 weeks buying assorted goodies lol.) At the very least it may be worth telling the manufacturer to keep these items in stock as well for future orders. I'm sure it's just a matter of time before someone (hint) opens a e cig/modders supply specialty type shop. Thanks for all your valuable time and input btw. Now, back to modding........

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10-17-2009, 10:21 PM	#3
nbaagain Senior Member Join Date: May 2009 Location: Honolulu, HI Posts: 179	I'm in for sure for some 801s that would be able to handle x2 3.6 batteries (whatever wattage, ohm, voltage that is).

10-17-2009, 10:27 PM	#4
nerf Super Member Join Date: May 2009 Location: DFW, TX Posts: 338	I'd be more than happy to do the calculations for people who don't trust their own math as well, I'll just need to know what wattage you want and what voltage you're running. A 901 passthrough should be pushing about 7.2 watts for comparison. A 510 on batteries is about 7 watts as well. A standard 901 on batteries (4.2v, aftermarket batts) is running 5 watts. Running 2x cr2s or cr123s in series without a regulator or some voltage dropper is going to be pushing 15 watts or so. So, 7-10 watts should be the goal, but thats just my opinion. ETA: Remember that the minimum is 3 ohms, I can't get them made any lower than that, so you're not going to get exact 510 performance out of a 901 on the same (low) voltage, but you'll get close. At higher voltage the minimum doesn't matter, you'll be increasing the resistance, not decreasing it.

10-18-2009, 01:03 AM	#6
Shreck Suppliers Join Date: May 2009 Location: Michigan, USA Posts: 251	Interest level here (for me anyways) might depend on how they vary the resistance. Are they making the atty coil longer or are they using different wire diameter wire to make the coil. It almost seems as though a larger wire diameter might last longer. Am I correct in this thinking? If not please feel free to correct me.

10-18-2009, 06:01 AM	#9
nerf Super Member Join Date: May 2009 Location: DFW, TX Posts: 338	Doublepost, I'm bad at the internet.

10-18-2009, 06:18 AM	#10
doots Super Member Join Date: Aug 2009 Location: Near Austin, Texas Posts: 1,127	I am losing a lot of 801 attys at 6volts and was wondering if it's the solder joints that are failing rather than a break in the coil itself due to 6 volt usage? And are 5volt users seeing the same 801 atty failures? vs 6v? I've went to 510 attys using 6v because they never fail. I have not seen this answered really because most users probably dont know how to acertain what caused the failures to begin with. I'd be interested in the 801s if it would mean less failures. Also if anyone else is experiencing 801 failures at 6v's? I get about 1-4 days out of an atty. Getting very expensive to say the least.