DSE901 atomizers photo close up view and info

[robw]

This is not a review, and it gets technical, skip to the end if you want the bottom line.

I was attempting to solve a vapor volume problem for my wife and after doing some experiments I came across some interesting info.

I have taken this photo of the atomizers from 3 suppliers. They are labeled.
The atomizer from the screwdriver and the one from puresmoker are identical.
They both have a bridge that sits 9.4mm from the rim and spans the width of the hole to the inner pot all the way to the body wall.

The Litecigusa atomizer sits 6mm from the rim and spans only as wide as the inner opening of the pot. The inner pot opening is also about .5mm smaller in diameter.

Ok so what does all this mean.
My experiments were done to determine which 901 atomizer performs better.
Here are the results

• The battery supplied with the screwdrive fully charged reads 4.02 volts
• The dse901 battery, supplied by Puresmoker supplied 4.17 volts

The Screw driver performs best on the included atomizer, or the atomizer supplied by puresmoker. It does not have enough voltage for the litecigusa atomizer

The 901 atomizer from Litecigusa performs best on the mini battery from puresmoker.

The atomizers from the screwdriver and puresmoker do not perform as well on the dse901 battery as the atomizer from Litecigusa does.


Here are the reasons why.

The atomizer from Litecigusa needs the higher voltage than that of the 4.02 volts coming from the screwdriver battery. When it gets 4.2 volts its narrow bridge allows the heat to be concentrated to a smaller area thus producing hotter and higher volume vapor. It is also 3mm close to the mouth peice which allows for deeper cartridge compression as well as less travel distance to your mouth which reduces heat loss.

The atomizers from screwdriver and pursmoker have a wider bridge which spreads the voltage out to much causing lower heat thus lower volume of vapor.

Does this effect the quality of any of the products?
No, they all still work and work as described.

The best performer for heat and volume though would be the litecigusa atomizer on the puresmoker battery. I have to assume the battery litecigusa sells is the same voltage output.

In order for the screwdriver to use the thinner bridged atomizer from litecigusa, it will need to produce at least .2 higher voltage to properly heat the atomizer. Increasing the voltage to the wider bridge atomizers do not make them perform better as test on the dse901 battery. The battery supplied with the screwdriver is rated at 3.6 volts. I purchased a few different batteries from dealextreme to experiment with. When they arrive I will update this.

So the bottom line.
DSE901 I prefer the atomizer with the narrower bridge.

screwdriver, it works fine on the wider bridge, however if you can find a higher output battery it will perform even better on the narrow bridge atomizer. Giving you a longer use time and hot large vapor.

Im going to experiment with pinching the bridge on the screwdriver and pursmoker atomizer to see if the perfomance is based on the bridge shape alone.

 

[Dr. Russell Fell]

This is not a review, and it gets technical, skip to the end if you want the bottom line.

I was attempting to solve a vapor volume problem for my wife and after doing some experiments I came across some interesting info.

I have taken this photo of the atomizers from 3 suppliers. They are labeled.
The atomizer from the screwdriver and the one from puresmoker are identical.
They both have a bridge that sits 9.4mm from the rim and spans the width of the hole to the inner pot all the way to the body wall.

The Litecigusa atomizer sits 6mm from the rim and spans only as wide as the inner opening of the pot. The inner pot opening is also about .5mm smaller in diameter.

Ok so what does all this mean.
My experiments were done to determine which 901 atomizer performs better.
Here are the results

• The battery supplied with the screwdrive fully charged reads 4.02 volts
• The dse901 battery, supplied by Puresmoker supplied 4.17 volts

The Screw driver performs best on the included atomizer, or the atomizer supplied by puresmoker. It does not have enough voltage for the litecigusa atomizer

The 901 atomizer from Litecigusa performs best on the mini battery from puresmoker.

The atomizers from the screwdriver and puresmoker do not perform as well on the dse901 battery as the atomizer from Litecigusa does.


Here are the reasons why.

The atomizer from Litecigusa needs the higher voltage than that of the 4.02 volts coming from the screwdriver battery. When it gets 4.2 volts its narrow bridge allows the heat to be concentrated to a smaller area thus producing hotter and higher volume vapor. It is also 3mm close to the mouth peice which allows for deeper cartridge compression as well as less travel distance to your mouth which reduces heat loss.

The atomizers from screwdriver and pursmoker have a wider bridge which spreads the voltage out to much causing lower heat thus lower volume of vapor.

Does this effect the quality of any of the products?
No, they all still work and work as described.

The best performer for heat and volume though would be the litecigusa atomizer on the puresmoker battery. I have to assume the battery litecigusa sells is the same voltage output.

In order for the screwdriver to use the thinner bridged atomizer from litecigusa, it will need to produce at least .2 higher voltage to properly heat the atomizer. Increasing the voltage to the wider bridge atomizers do not make them perform better as test on the dse901 battery. The battery supplied with the screwdriver is rated at 3.6 volts. I purchased a few different batteries from dealextreme to experiment with. When they arrive I will update this.

So the bottom line.
DSE901 I prefer the atomizer with the narrower bridge.

screwdriver, it works fine on the wider bridge, however if you can find a higher output battery it will perform even better on the narrow bridge atomizer. Giving you a longer use time and hot large vapor.

Im going to experiment with pinching the bridge on the screwdriver and pursmoker atomizer to see if the perfomance is based on the bridge shape alone.

Thanks for the great post.

 

[ZambucaLu]

That was great!

Lu

 

[CaSHMeRe]

The atomizer from Litecigusa needs the higher voltage than that of the 4.02 volts coming from the screwdriver battery. When it gets 4.2 volts its narrow bridge allows the heat to be concentrated to a smaller area thus producing hotter and higher volume vapor. It is also 3mm close to the mouth peice which allows for deeper cartridge compression as well as less travel distance to your mouth which reduces heat loss.

Higher voltage = quicker discharge/per charge. The bridge is simply a wick, and not the place where liquid turns to vapor. Its only goal in life is to transfer liquid. Same reason you can still smoke an atomizer without the wick but can't use cartridges ... If you drip 2 drops on a hot wick, you will see it absorb at the same rate of speed as a completely cold wick ...

The atomizers from screwdriver and pursmoker have a wider bridge which spreads the voltage out to much causing lower heat thus lower volume of vapor.

Explain how a widening of a wire wool wick would spread out the voltage when voltage itself is centered at the pot?

I like your testing though ... You should try averaging it out over 3-4 atomizers per supplier to find a median. I would also like to see what the circumference of the wick itself is ....

EDIT: Also, what are the Serial #'s on the batteries (minus the screwdriver) I know what mine would be, what are LiteCig's ???

 

[robw]

Interesting, the bridge shapes may still affect vapor though.
The distance from the inner pot to the wick may have some play here. I wish I could get inside there and do a high speed video of it.

I ran the volt meter on the bridge and there was only .05 volts on activation.

I'll have to recant my remark about the bridge heating up. The heat I noticed appears to be only a transfer from the core.

What effect do you think having the bridge farther away from the core has if any?

 

[CaSHMeRe]

robw ... I am loving your research though This is what we need !!!!!

The only factor that would come in to play as far as distance of wick to pot would be the transfer rate of the liquid itself. Did you ever do an experiment in grade school, with colored water and celery? The longer the stock, the longer it took the celery to absorb ...

What may also be another factor is the density of the wick itself as well ... not even sure how you would test something like that .... Can you measure circumference of the wick? Would be interesting to see the heating element itself (coil and pot) and see if there is a size difference.

 

[robw]

I think I know what it is, it is the .5mm smaller size on the pot. If the pot is smaller then it can heat up faster due to smaller surface area.
Of course I can't confirm that until I take all the atomizers apart.
Maybe I am just to fricken .... about this stuff.

 

[robw]

Ya , Ill do that for you. I have one dead one I can mutilate. As soon as another goes Ill compare them.

Im also going to experiment with higher voltage. Id like to know the burn out level.

 

[CaSHMeRe]

perhaps, but if the pot was smaller, it also can't hold as much liquid, thus resulting in lower vapor output. at least that is what I would think. I'm also not even sure if .5mm will have much of a different on anything. If it were a 1-2mm difference and you could honestly see a difference then there may be some truth to it, but .5mm is awfully small.

did you see my other questions though, on circumference of the wick and density?

 

[robw]

Yeah, I can test that by just measuring the temperature of each atomizer. That should have been part of the first test, but my wife was waiting for her cig back.

 

[CaSHMeRe]

LOL ... ecig stealing to get data ... I like ...

haha ...

 

[PeteMcArthur]

Robw,
Please don't take this the wrong way but you are completely missing the main thing here. Batteries have an internal resistance that causes their voltage to drop WHEN UNDER LOAD. All the batteries will drop voltage when you measure them inder load. off load voltages are not relevant.

Also the concept of the voltage being spread around the bridge is a new one on me. The voltage heats the little coil that you can't see, under the bridge.

 

[ApOsTle51]

you could also compare results from atomizers made by by the same manufacurer and get wildly varying results, the manufacturing process tolerences are far to big in these things to give a real consitent part.

Also there are 2 models of atomizer , an 'RN' series atomizer and a 'DSE' atomizer both marketed as plain old 901 atomizers.
the most common type are the RN type..

the the dse type have a more pointed wire wool bridge.. the RN type a flatter bridge.. the RN type also run noticeably hotter..

 

[trog100]

errrr. your reasoning is kinda way off robw..the voltage for a screwdriver battery depends entirely where the charger takes it to...

normally the safe point is around 4.2 volts.. this initial voltage drops off as the battery runs down.. by the time it gets down to around 3.5 volts its time for a recharge..

this applies to pretty well all e cig batteries.. the screwdriver battery is simply bigger.. it has less of a voltage drop under load and will give any atomizer fitted to it more power than normal small e cig batteries.. it also dose it for longer..

the wire wool bridge.. its simply there to wick fluid from the cart wool to the wire wool that feeds the atomizer heater coil it dosnt do much else..

atomizers have change slightly in design.. i think u have some different time period ones in your pics.. we have shipped three different types (shapes) in the last month..

a copy of an email i just sent to a customer..

####

there are two types of a 901 atomizers xxxx.. the original DSE 901 type and the RN type both come from different chinese factories..

now this is where it gets complicated.. we have supplied both types with our screwdrivers.. the RN type like the ones from pillbox run a little hotter and produce the most vapour.. the DSE type run a little cooler.. atomizers can vary a lot as regards how long they last.. some simply just stop working some just fade away..

to know which type you have look down the end at the wire wool bridge that sticks up.. the latest DSE type has a more pointed bridge.. the pillbox RN type a flatter bridge..

the DSE type can be obtained from eBay Store - elecitronic cigarette: e-cigarette, ruyan, e-cigar

we are now shipping the RN type.. shortly we will offer them for sale in packs of three or four for around £20 plus postage..

when they start to fade off a little too much.. press the switch for around ten seconds and heat them up till they glow.. look down the end while doing this.. remove the cart.. it perks them up for a bit longer but it also might kill them of completely.. so be warned.. put three or so drops of liquid into the atomizer after cooking it..

atomizers are simply a consumable just like the liquid is.. we make this clear no one else does.. they just need to be obtained cheaply and replaced when needed..

best of luck

ted


#####

anyways your reasoning is off... but we all have to start somewhere

trog

 

[trog100]

just to add.. the latest DSE cooler running ones seem to have more wire wool around the atomizer pot.. also a slightly smaller ceramic pot the heater coils sits in..

i think this is to help feed the heater coils better but it has the downside of being too easy to flood when it gets too wet.. add in the less hot heater coil and the fire goes out so to speak.. they probably work better with just a cart and might live longer but dont like being wet..

swings and roundabouts.. compromises and a very inexact science.. this is what e cigs are all about..

trog

 

[robw]

All very good pieces of information.
If I understand correctly
The taller bridge one is the DSE. (smaller core/cooler running/does not perform well when flooded)
the wider bridge is the RN (older model/hotter core)

The descriptions counter the evidence from my tests.

In my test the DSE ran hotter on the dse battery than the RN.
On the screw driver, the RN ran better than the DSE

Could it be that the DSE is better at being a dripping model than the RN? Because the Test were all done dripping.
Im going to try just carts one both atomizers now to keep them both from flooding.

 

[robw]

Im writing this experiment in real time.
Ok Im using carts not on both the DSE on a DSE battery and the RN on the Screwdriver.

I started each off by blowing them out, and putting identical factory carts on both.
I let both have time to wick the liquid down and both have fresh charged batteries.

So far the result is:
The DSE and the RN perform identical on the first few puffs.
After 4 puffs the RN continues to draw constant fluid from the cart while the DSE is starting to dry.
Waiting a few min.
It took a min for the DSE to re wet it self. Could be the distance the fliud has to travel (extra 3mm wich height)
The RN is still wet
Swapping RN and DSE. Now RN is on DSE battery and DSE is on the screwdriver
DSE on the screw driver gave 3 puffs before it ran out
Did 8 puffs on the RN on the DSE battery and it is still wet and working.

I think we are finally seeing the difference here.
In my experiments last night all the atomizers were dripped.
In the drip method the DSE performed better than the RN

In this new experiment with using factory carts, the RN performed perfectly while the DSE required time to re wet after 3 puffs.

I will pick up a larger sample of atomizers and verify the tests at a later date.

 

[trog100]

we have decided the RN type are the better ones.. which is the ones we will now ship... i would suddest useing the screwdriver in your atomizer tests for one simple reason.. it will give consistent power to the atomizer..

normal e cig batteries are all over the place and unless brand new will give variable results.. even brand new ones will give variable result..

trog

 

[Dr. Russell Fell]

I wanted to chime in and say I'm pretty sure Yang's 901 uses a different type of atomizer.

 

[robw]

I agree that Trog, the RN atomizers when used with a cart perform perfectly and consistently.
Dripping into the cart works better than dripping into the pot in the case of my screwdriver.