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OK, technical question for some of you out there. It's an issue I've been experiencing with the BMF cartomizers and now I'm seeing it with the SI cartos as well.
The problem is that the electrical resistance of the cartos varies quite a bit in some cases and it makes a big difference in performance.
Last night I took two five-packs of cartos each from my BMF and SI stashes and metered them out. Long story short, in both batches:
- Less than half metered at or near optimal resistance (~2.4 to 2.9 ohms);
- Half or more metered well above optimal (~3.2 - 3.9 ohms; in this category it was 50% for SI, 60% for BMF).
- The average for both batches was just above 3.0 ohms; Standard deviation for both batches was statistically insignificant at ~.27, but the difference from lowest to highest was whopping 39%!
IIRC, in SteelJan's review all cartos in one box appeared to be in the 2.7 to 2.9 ohm range, which should perform well. My batches from either brand are nowhere near as consistent, and I can tell when I get one on the high end of the range. The vapor is cooler, there's less of it, and flavor drops considerably.
I certainly understand that things like this can easily happen when manufacturing overseas (the company I work for manufactures in HK and wee see it all the time). In many if not most cases a resistor that's out of spec by 5-10% is no big deal. But differences just South of 40% at ends of the range seems like a big deal to me.
So I wonder... is the nominal resistance for these cartos really supposed to be at or near 2.7 ohms?
Is this variation something that anyone else has seen or is seeing?
What kind of variation should we expect to see... in other words, is a range from 2.4 to 3.9 ohms considered an acceptable manufacturing deviation for these cartomizers?
Please know, I'm not bashing here, and certainly not on a particular brand. Just looking for answers and, if this is not uncommon, pointing out a potential QA issue that might need to be looked into.
The problem is that the electrical resistance of the cartos varies quite a bit in some cases and it makes a big difference in performance.
Last night I took two five-packs of cartos each from my BMF and SI stashes and metered them out. Long story short, in both batches:
- Less than half metered at or near optimal resistance (~2.4 to 2.9 ohms);
- Half or more metered well above optimal (~3.2 - 3.9 ohms; in this category it was 50% for SI, 60% for BMF).
- The average for both batches was just above 3.0 ohms; Standard deviation for both batches was statistically insignificant at ~.27, but the difference from lowest to highest was whopping 39%!
IIRC, in SteelJan's review all cartos in one box appeared to be in the 2.7 to 2.9 ohm range, which should perform well. My batches from either brand are nowhere near as consistent, and I can tell when I get one on the high end of the range. The vapor is cooler, there's less of it, and flavor drops considerably.
I certainly understand that things like this can easily happen when manufacturing overseas (the company I work for manufactures in HK and wee see it all the time). In many if not most cases a resistor that's out of spec by 5-10% is no big deal. But differences just South of 40% at ends of the range seems like a big deal to me.
So I wonder... is the nominal resistance for these cartos really supposed to be at or near 2.7 ohms?
Is this variation something that anyone else has seen or is seeing?
What kind of variation should we expect to see... in other words, is a range from 2.4 to 3.9 ohms considered an acceptable manufacturing deviation for these cartomizers?
Please know, I'm not bashing here, and certainly not on a particular brand. Just looking for answers and, if this is not uncommon, pointing out a potential QA issue that might need to be looked into.
I can save you a trip, my next door neighbor "has" two cats that live in a shed and use my bark dust exclusively for their litter box..... one of them is actually quite meaty-looking....
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Hi Vapian. I'm wondering if you zero'd out your meter or at least looked to see what it is when you touch the two leads together, to remember to minus that value off of what your meter reads when you measure your cartos. Also make sure your meter has good batteries in it. Reason I'm saying this is that those numbers you measured on your cartos look way high to me.
The first 5 Volt carts I got measured this before I vaped them (in the video I measure them after I'd vaped them for 11 days, so the values varied a bit in the video) : 2.6 2.2 2.6 2.5 2.5 So four of mine measured very consistantly around 2.5-2.6ohm. I will confess that I treasured that 2.2ohm carto, man, that thing hit really really nice, but it did make my battery run down faster, lol. But I purposely did not use that one in my video because I thought that would not be a fair representation.
Hang on, I'll measure 5 new pre-vaped pre-filled cartos right now: 2.5 2.4 2.5 2.3 2.5
I'll go dig out one of my other meters and double-check in a bit.
I agree with Steel Jan, those readings seem to have a lot more variance then they should
65mm's coming a day earlier!? sweet...65mm batts new and cartos should be up by the end of the afternoon
65mm batts new and cartos should be up by the end of the afternoon
cant wait! im excited like a kid buying a new toy... but good to know they wont be up for a couple hours so i can at least get some work done today.
Okay, I have two other digital multimeters. One isn't going to work for measuring cartos because when I touch the leads together, the lowest it will go is 3.2ohms, LOL!!!
My other one doesn't go to zero when I touch the leads together, so that tells me I know it's going to be off by .3 to .4 ohms ... that's what it's bouncing around at when it should go to zero.
Same above 5 cartos: 2.8 2.7 2.7 2.9 2.7 so minus off the .3 off of each of these = 2.5 2.4 2.4 2.6 2.4 So yeah, those values are both in the ballpark of each other and consistantly okay.
My other one doesn't go to zero when I touch the leads together, so that tells me I know it's going to be off by .3 to .4 ohms ... that's what it's bouncing around at when it should go to zero.
Same above 5 cartos: 2.8 2.7 2.7 2.9 2.7 so minus off the .3 off of each of these = 2.5 2.4 2.4 2.6 2.4 So yeah, those values are both in the ballpark of each other and consistantly okay.
Mistakes are always possible. Will double check the meter and re-measure sometime tonight.
did you say you can tell a big difference bw the cooler cartos that you measured?
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Hi everyone, Unfortunately everyone is still trying to finish the inventory counts and get the stock entered on the site...it is all in the building ....the owners, stock, packing and web people are all staying late tonight to get this finished and up on the site as soon as possible... we apologize for the delay.
Oh bless your hearts Imagine! Retail really really stinks at times. Been there and done that....and only miss it sometimes Just make sure you guys make it fun for yourselves
(((hugs))) to all of you workin to hard!
Just make sure you guys make it fun for yourselves(((hugs))) to all of you workin to hard!
might take you up on it at this point lol.....no I am sorry we just expected to be further along then we were .... but it should all be rectified shortly
Want me to drive to Ohio to help?
ya'll hang in there and try to make it fun, imagine -- tell all of your cohorts there that you have a mob of webfiends lurking and watching your site for the new goodies!
(I feel kinda sorry for whoever has to watch your live chat thing...I've had a window open to your site now for a week! "no you can't help me!....no really, you can't help me....!)
(I feel kinda sorry for whoever has to watch your live chat thing...I've had a window open to your site now for a week! "no you can't help me!....no really, you can't help me....!)
hugs also, having been in retail for 25 years (some of us never get out) and having had one of those days where I sweetly smiled while being ***ched at all day I can definitely say that retail sucks a lot of the time, and people like those at Smokeless Image should be celebrated for their dedication to the customer.Oh bless your hearts Imagine! Retail really really stinks at times. Been there and done that....and only miss it sometimes
(((hugs))) to all of you workin to hard!
lol I have been manning that lately lol everyone else is so busy lol ...I feel so badly ...but please just hang in there
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