Odyssey on Vapour Trails TV - Thursday 31st May 9pm UK time

[Astrecks]

A 1.5ohm carto will remain a 1.5ohm carto... but a single coil instead of a dual coil.

You maybe able to see from the "naked" carto photo that the coils are wired in parallel, so each coil receives the full voltage from the battery.

You might want to check that with a meter.  If you snip a parallel coil from a pair, the resistance will go up.  For a 1,5 Ohm pair you should see 3 Ohms.  The likely outcome is less vapour, but longer battery life.

There's a lot of confusion about the relationships between current, voltage, resistance and power in the vaping world.  Expect more work on this from TW this year.

Liam

I have not checked the ohms from the threads to be honest

[Kenneth131]

I too am surprised if anyone has a meter it would be great if you could check. I would have thought each coil would be 1.5ohm independently so removing one would still allow the remaining to run at 1.5ohm. Why would the resistance go up? Im really interested now in the physics behind it 

[chops]

I think it may be about something called equivalent resistance. When resistors are in parallel, there are many routes, so the total resistance is less than each pathway. In series you simply add resistances together. You're changing a parallel circuit with two resistors, and an equivalent resistance, into a (single resistor) series circuit.

I may be wrong, I'm a little rusty (covering my back here!).

[LiamH]

Chops, you're spot on.  A pair of 1.5 ohm resistors in parallel actually give an equivalent resistance of 0.75 ohms.  So when I get my meter out I'm expecting about 3 ohms each from the coils in a 1.5 ohm DCT.  Vapour Trails are over simplifying the physics of cartomiser design (IMHO), but the electronics makes complete sense and he's got it right.

However...  VVV on a single coil has for most not been a great experience.  I intend to figure out why at some point.  I think the criticism of the Odyssey's battery performance is possibly overstated.  Installed a duff cartomiser this evening, ended up using a CE2 on my Odyssey.  Guess what?  It produces enough vapour to cause consternation to a pub landlord.  That's got to be something hasn't it?

Liam

[chops]

Glad I can still remember all that, it almost hurt my brain raking it up lmao.

[Osmo]

Chops, you're spot on.  A pair of 1.5 ohm resistors in parallel actually give an equivalent resistance of 0.75 ohms.  So when I get my meter out I'm expecting about 3 ohms each from the coils in a 1.5 ohm DCT.  Vapour Trails are over simplifying the physics of cartomiser design (IMHO), but the electronics makes complete sense and he's got it right.

However...  VVV on a single coil has for most not been a great experience.  I intend to figure out why at some point.  I think the criticism of the Odyssey's battery performance is possibly overstated.  Installed a duff cartomiser this evening, ended up using a CE2 on my Odyssey.  Guess what?  It produces enough vapour to cause consternation to a pub landlord.  That's got to be something hasn't it?

Liam

I have used a 14500 protected batt straight of the charger at 4.2 volts with a TW CE2 Xl in a box mod and to be honest I cannot see the damn Landlord  

Os

[Kenneth131]

Lol at liam and osmo that's the type of performance I would expect from these batteries so I have no doubt it will be great. I certainly loved the performance of the SD

As for you chops well done on remembering your stuff was very explanitory as were you liam it does indeed make sense now so thank you for clearing that up.

Is resistance a liniar trend whereby 4 x 6ohm coils would also be equivalent to 1.5ohm?

[LiamH]

Is resistance a liniar trend whereby 4 x 6ohm coils would also be equivalent to 1.5ohm?

Yes, 4 x 6 ohm coils in parallel is 1.5 ohm.  But you then need to ask whether the 4 coils get hot enough to do any vapourising.  A surprisingly complicated omelette this vaping business.  Lots of questions, and the answers will start to appear before too long I'm sure.

Liam

[Kenneth131]

The reason I ask Is i know one vaping maniac who has indeed made a quad coil. Iv yet to try it although im not sure what the coil resistances were.

Oh I totally agree that when your dealing with physics just because you satisfy one requirement does not mean you have everything else you need. As you said resistance is one thing then how many coils being used in what connection then you have the battery whats the output and under load what will it perform like if your using a regulator.

Its mad. So i know its a bit trial and error but very rewarding when you reach your goal and have a working device 

[JonS]

A 1.5ohm carto will remain a 1.5ohm carto... but a single coil instead of a dual coil.

You maybe able to see from the "naked" carto photo that the coils are wired in parallel, so each coil receives the full voltage from the battery.

I was reading this page and suddenly it accured to me! Instead of cutting wires and modifacation of the coil or coils If vapers prefer a single coil or a double coil or even a tripple!
Why dont TW incorporate a simple switch into the circuit so vapers can choose the option of more vape or more battery life or would that be too complicated and expensive to incorporate into the design? It must have be considered at some point or am I just being silly?
 

[Kenneth131]

Nope I certainly had not considered it but my friend you may be on to something. Not sure it could be quite as simple as a switch but yeah I totally get what your on about and think its entirely possible

Only downside I see is that at present dumb cartos are cheap but adding in the extra selection would add extra cost which may be a turn off for some since the dream has always been cheap attys.

Also as liam said to have a 1.5ohm resistance in a dual coil it would be 2x 3ohm coils. So there would have to be more than just a switch for that to work also.

But certainly not out with the grasp of the talent we have on here I'm sure

[JonS]

Nope I certainly had not considered it but my friend you may be on to something. Not sure it could be quite as simple as a switch but yeah I totally get what your on about and think its entirely possible

Only downside I see is that at present dumb cartos are cheap but adding in the extra selection would add extra cost which may be a turn off for some since the dream has always been cheap attys.

Also as liam said to have a 1.5ohm resistance in a dual coil it would be 2x 3ohm coils. So there would have to be more than just a switch for that to work also.

But certainly not out with the grasp of the talent we have on here I'm sure

I think it's an good idea, worth working on? I suppose in theory on the contact point of the carto and the power supply you could have more contact points and a switching mechanism on the device it's self to control it?  (I think we need to forward this idea to someone?)

[StevieD]

The only way i can think that you would be able to get multiple contact points to line up consistently would be using a push fitting sort of like a Din Plug, or for a bit more of a secure connection a bayonet fitting....also if you had a triple coil at 1.5 Ohms that would be three 4.5 Ohms coils, so your options would be 1.5, 3 or 4.5. The cost per unit compared to 'fixed resistance' cartos would be relatively high for very little gain as not many people would have a mod powerful enough to use 4.5 Ohm. A nice idea, but not terribly practical if it would push the cost of a carto over the cost of a 'normal' atty. You could do it by building a switch into the carto, but even the smallest slide switch is gonna take up a fair bit of space in a small unit.....perhaps a rotary switch, so you could just twist the end of the carto to select 1, 2 or 3 coils? then that would only add to the length of the carto. A rotary switch with 5 contact points, two of them blanked off, would allow you to select for 1, 2 or three coils.

[Kane2283]

Hello,,haven't posted in awile!  =( work,, I was thinking to maybe do a sauter rewire job on a these dual coil replacements. Reason is I have tons just sitting round for a cheap 5 V box mod i made.

Now though I've got torpedo and dual coils just don't work for it very well. The regulator or wtvr. I also really like the Mega Dual Coils, they work quite well at 5V,,,but not on the torpedo.

Sooooo ya,,ive been playing around w/ em,,cutting the wire,,,works,,,helps alot,,but theres got to be another way. Sposed to have my electrician friend come out also to help me and i'll let you all know if we get anywhere. Will Prob just tear up a bunch of carto's lol. Picked up some 2.0 and 2.5 single coils replacements for my tanks from another place to try out on the torpedo.

[Kenneth131]

I have seen a connection on an enic using neodymium magnets for the attys which was quite a neat ldea

[JonS]

The only way i can think that you would be able to get multiple contact points to line up consistently would be using a push fitting sort of like a Din Plug, or for a bit more of a secure connection a bayonet fitting....also if you had a triple coil at 1.5 Ohms that would be three 4.5 Ohms coils, so your options would be 1.5, 3 or 4.5. The cost per unit compared to 'fixed resistance' cartos would be relatively high for very little gain as not many people would have a mod powerful enough to use 4.5 Ohm. A nice idea, but not terribly practical if it would push the cost of a carto over the cost of a 'normal' atty. You could do it by building a switch into the carto, but even the smallest slide switch is gonna take up a fair bit of space in a small unit.....perhaps a rotary switch, so you could just twist the end of the carto to select 1, 2 or 3 coils? then that would only add to the length of the carto. A rotary switch with 5 contact points, two of them blanked off, would allow you to select for 1, 2 or three coils.

Rotary Switch that sounds a good Idea?   I think this subject needs to move to the modifacation page for people to have further thoughts about the idea? But I'm not sure how to do it? Jeff! Help!

[canniscam]

Kenneth,

I would think something like this could be used to carry the common and the three other leads into the coils while remaining cost effective ...



Plug the atty in earphones style and then have a threaded collar that could thread up against the bottom on the cartomizer between the battery and the coil housing to keep the carto secure for transport.

That way you could place the control circuits in the mod or an adapter box... so you would only buy the mod box once and then use the swapable cartos with the 3.5x4 audio connectors.

Casey

[Kenneth131]

I see what you have other cassey much like the glass drip tips on some mods very good idea as well hope the development team are reading all this lol

[Astrecks]

......Rotary Switch that sounds a good Idea?   I think this subject needs to move to the modifacation page for people to have further thoughts about the idea? But I'm not sure how to do it? Jeff! Help!

You will have to start a new thread Jon, I can't move parts of and existing thread.

[JonS]

......Rotary Switch that sounds a good Idea?   I think this subject needs to move to the modifacation page for people to have further thoughts about the idea? But I'm not sure how to do it? Jeff! Help!

You will have to start a new thread Jon, I can't move parts of and existing thread.

I have started a new thread for this topic in the modifacation area, regards

[wobblybob]

I'm hoping that there will be an e cig that works consistently without any modification whatsoever. I'm looking for something that just needs cleaning and will give a reasonable life from consumable parts.

[canniscam]