Z atty U voltage drop

[EDO]

JimmyHat...when comparing voltage drop generally you only care if you are making 1 ohm and sub ohm coils. If you put 0.9 ohm coils on your other attys you will get the same result....large voltage drop. The lower the ohms the higher the voltage drop. People who vape at around 2ohms don't care about voltage drop.....since they don't experience much of it.

The only way to know if you are experiencing an unusually large voltage drop from an atomizer is to compare the same coil (the standard is a 1.o ohm coil) on different Gennys on the same mechanical device. None of you guys have a different atomizer that is not a Zenesis?

 

[Jimmyhat]

also i just played with an old did clone that is filthy dirty with liquid so that might be palying a part with the drop. Anyway I had a coil of .8 ohms with a voltage of 3 volts. I rewrapped it with 1.4 ohms and the voltage was 3.3 volts. I also have another did that's clean and it runs at 2 ohms and that is showing around 3.8 volts. This is all on a roller that just had the switch pulled apart and cleaned with fresh batteries. So there is a change depending on ohms with that as well. Also all the tests I have been doing have been on this roller or another I have. I tried using my gus but the drop on that is .1-.2 more than what the rollers are showing

 

[EDO]

Yes that was the whole point I was trying to make. YOu have to compare two attys with the same ohm coil on the same mechanical mod....or else it is meaningless. Now try to wrap a 1.0 ohm coil on you Zenesis and a 1.0 coil on the DID clone. Test the voltage drop on the Zenesis on the ROller and then DID on the Roller. Let us know the difference

 

[shortee611]

I've been using the exact same coil. Just have to be careful not to disturb it too much. On a .9 ohm coil (so I thought see post 28) i was getting 2.54 volts (at the posts for the coil) on a freshly charged AW IMR 18650 4.2 volts. On my wife's AGA T+ .9 ohm coil (same mod same battery) I was getting 3.3 volts (at the posts). That's a .8 volt difference. Right now on a real .9 ohm coil on my ZAU with the spring swapped out for a brass post I'm getting 3.65 volts. That's a 1.1 volt increase with the brass post inside the ZAU. I'm using this on my Poldiac which has silver plated contacts and I can't or my meter can't measure any resistance in the mod.

 

[EDO]

I've been using the exact same coil. Just have to be careful not to disturb it too much. On a .9 ohm coil (so I thought see post 28) i was getting 2.54 volts (at the posts for the coil) on a freshly charged AW IMR 18650 4.2 volts. On my wife's AGA T+ .9 ohm coil (same mod same battery) I was getting 3.3 volts (at the posts). That's a .8 volt difference. Right now on a real .9 ohm coil on my ZAU with the spring swapped out for a brass post I'm getting 3.65 volts. That's a 1.1 volt increase with the brass post inside the ZAU. I'm using this on my Poldiac which has silver plated contacts and I can't or my meter can't measure any resistance in the mod.

Thanks shortee....thats what I am talking about...0.8V difference strictly due to the internal resistance of your Zatty vs the AGA. The poldiac does have a minimum resistance under load... but it doesn't matter since you used the same mod on both attys. So you lost 5 watts between the two attys.....that is huge....you were vaping your Zatty at 7 watts vs 12 for the AGA. Your modded Zatty is vaping at 15 watts.

 

[shortee611]

Once I fixed the internal resistance in the Zen I had to wrap a new coil, .7 ohms was a little much. I'm hoping once I make a new one piece center shaft out of brass the voltage drop will be minimized as much as possible.

 

[EDO]

It definitely will....your results with the poldiac and the Modded Zatty is still not that great....a .55 voltage drop is still too much when using a great mod like the poldiac.....I bet if you put my Cobra on top of the poldiac you would get only a 0.2v voltage drop and with a 0.9 coil you would be vaping at nearly 18 watts.

 

[shortee611]

I don't mind doing this to this atty. It gives me something to do. I was a tool maker for 15 years. But that trade ate itself. Too many tool makers that didn't deserve the ticket. Doesn't pay what it should so I bailed. Still have access to my old shop which is a bonus. Now if they only had a cnc lathe I'd be making other things (that i won't mention..... yet ) I am waiting for the next batch of Foggatti's to come out. I need to try another high end RBA. Something to compare to. Right now I'd only rate the Zatty as a mid range RBA. And that's only because of the build quality (which is great). The internal design is horrible. Definitely not worth the price. Considering a $25 AGA T+ outperforms the $140 ZAU out of the box on low resistance setups. Can't speak for higher resistance setups.

 

[Jimmyhat]

So I changed the battery in my multimeter last night even though it appeared to still have a good amount of life left in it and the voltage drop was reduced across all hybrids/atomizers by .2. Just thought I'd share that incase others haven't changed the batteries in their multimeter for awhile, being that it does make a difference.

 

[Rymarski]

Interesting results here. I'm gonna pick up an Aga-t and try it on a mech with the zau.

If you guys are getting such a large difference in performance that is a major let down.

 

[Jimmyhat]

Rymarski I still love having a mech even though I seem to be getting voltage drop everywhere I like the fact that if something goes wrong it's easy to fix also they can take a beating and for me thats perfect. I started testing everything I own and ended up replacing ever bolt on my zens with brass bolts. I have to find some brass springs for my sidewinders and all my zen buttons but so far I noticed anywhere from a .05 to a .2 loss in voltage drop so the brass is def the way to go compared to the stainless bolts. Now I just have to figure out something for the zau's like shortee is planning on doing

 

[shortee611]

Alright here we go. So I replaced the bottom pin and the spring with a 1/8 diameter solid brass piece. Drilled out the insulator in the bottom of the 510 connector to accommodate the larger brass piece. All I have to say is wow. 4.2 fresh charged battery and a .9 ohm coil is giving me 3.95 volts at the posts under load. Well I'm completely satisfied now. Much much better. The only problem I see in doing this is that if your mod doesn't have an adjustable center pin you may have problems since the adjustment in the atty is gone.

 

[Rader2146]

The only reliable way to measure voltage drop through the atty is with a well regulated DC current (bench power supply, DC-DC converter, Provari) or with 2 multimeters; voltage in compared to voltage out. Batteries are too unreliable and will throw off the results from one measurement to the next. If you are using a cheap mech mod, you also have to battle with the mods resistance and unreliability.

There is also the 4-wire method for measuring uber-low resistance, but a constant current generator in needed.

 

[shortee611]

We were trying to minimize the internal resistance of the z-atty's. Mine was .3 ohms. I was using a high end mech mod and a high end fluke multi meter.

 

[Rader2146]

Even the best Fluke meter isn't accurate enough to do it right. Just doesn't have the resolution on the ohms scale. 4-wire method will tell you the resistance of a solid piece of copper.

I'm just saying that if someone wants accurate results, there is a better way if doing it. Batteries are unreliable and resistance measurements aren't accurate at a milliohm scale.

 

[shortee611]

We were just trying to figure out where the voltage drop was coming from. For what we were looking for the equipment we had was more than sufficient. And the improvement I got was way more than I was expecting. I'm happy now.

 

[wfarrar33]

So should i go ahead and send my two to you shortee?

 

[EDO]

We were just trying to figure out where the voltage drop was coming from. For what we were looking for the equipment we had was more than sufficient. And the improvement I got was way more than I was expecting. I'm happy now.

How does it vape compared to before? It should be like night and day the difference. IT seems the mod is simple enough that every Zatty owner should be able to do.

 

[shortee611]

Its unbelievable how much better it Vapes now. The flavor is better and the amount of Vapor nearly chokes you out. It's awesome. This modification is very simple to do I did it last night while I was BBQing.

 

[wfarrar33]

where did you get the brass rod you used? Also do you think you could provide me with a semi-detailed step by step. Id hate to ruin my ZAU's

Its unbelievable how much better it Vapes now. The flavor is better and the amount of Vapor nearly chokes you out. It's awesome. This modification is very simple to do I did it last night while I was BBQing.