BB Extended Tube

[lotus14]

The washer 510s are SBE? and I'm pretty sure they're around 2.4 ohms.

[note: I made a mistake in my post above. That last line with the Joye 510 (2.2 ohm) at 6.4v should be equal to 18.6 watts and 2.9 amps.]

Joye 510 (2.2 ohm) @ 6.4v = 2.9 amps
SBE 510 (2.4 ohm) @ 6.4v = 2.66 amps -- and 17 watts.
The cartomizers should be presenting about 2.8 ohms resistance.

So it looks like the trip point is somewhere between 2.7 amps and 2.9 amps?

What's an SBE?

I recently got some SLB 510s that are 3.2-3.3 ohm. Pretty nice at HV. Thinking of trying some Boge 'Expert' ones at 2.8 ohms.

Also, all your calculations are unloaded? When calculating watts I've always used the loaded voltage. A stock 510 for example is 3.1v loaded. The BB with a 2.3 ohm load is about 5.2v when it reads 6.2 at the adapter.

 

[Quick1]

What's an SBE?

...maybe it's SBE? I've got ones with a washer and they measure about 2.4 - 2.6 ohms. Also have a very slightly larger diameter barrel. A regular 510 cart does not wiggle but will fall out. A 901 cart is a tight fit.

I recently got some SLB 510s that are 3.2-3.3 ohm. Pretty nice at HV.

Those have to be HV attys?

Thinking of trying some Boge 'Expert' ones at 2.8 ohms.

No idea. Should be good. Interesting to see if those trip the PCB.

Also, all your calculations are unloaded? When calculating watts I've always used the loaded voltage. A stock 510 for example is 3.1v loaded. The BB with a 2.3 ohm load is about 5.2v when it reads 6.2 at the adapter.

That's measured?

Yes my calculations are unloaded, but that's a function of the battery right? because they can't handle the current? If I'm using a 2A power supply at 5v and I measure 5.2v at the adaptor I expect loaded and unloaded to be the same right? I would also expect your unloaded and loaded voltage to be about the same with high discharge batteries. Is that right?

 

[lotus14]

...maybe it's SBE? I've got ones with a washer and they measure about 2.4 - 2.6 ohms. Also have a very slightly larger diameter barrel. A regular 510 cart does not wiggle but will fall out. A 901 cart is a tight fit.
Those are the old knock-offs. Look for ones without the washer IMHO.

Those have to be HV attys?
Sorta. lol. They do ok on a 3.7v mod but suck on a regular 510 batt. Most HV attys are either 4.5 or 5.2 ohms.

No idea. Should be good. Interesting to see if those trip the PCB.
Shouldn't. No problem with 2.8 ohm 510 cartos. Suppose I'll see when they get here.

That's measured?
Yes.

Yes my calculations are unloaded, but that's a function of the battery right? because they can't handle the current? If I'm using a 2A power supply at 5v and I measure 5.2v at the adaptor I expect loaded and unloaded to be the same right? I would also expect your unloaded and loaded voltage to be about the same with high discharge batteries. Is that right?
No. The voltage is what the batt is capable of without resistance. Unloaded voltage really doesn't tell you much except gives you a rough guess. Put a 5.2 ohm HV atty on a mod reading 6.5v at the adapter (or PT) and you'll see the voltage drop to around 4v.

See red.....

 

[Quick1]

Yes my calculations are unloaded, but that's a function of the battery right? because they can't handle the current? If I'm using a 2A power supply at 5v and I measure 5.2v at the adaptor I expect loaded and unloaded to be the same right? I would also expect your unloaded and loaded voltage to be about the same with high discharge batteries. Is that right?

No. The voltage is what the batt is capable of without resistance. Unloaded voltage really doesn't tell you much except gives you a rough guess. Put a 5.2 ohm HV atty on a mod reading 6.5v at the adapter (or PT) and you'll see the voltage drop to around 4v.

Why is that?

I was thinking (based on nothing at all) that any voltage drop under load would be due to the battery not being able to deliver the current. For example that 6.5v though a 5.2 ohm resistance should result in a current of 1.25 amps. The resistance is fixed so if the battery can't deliver that discharge rate then the voltage would drop. I would expect less (or no) voltage drop if it was a high discharge rate battery. Let's say it's a 2500 mAh battery with a max discharge rate of 16C. I wouldn't expect any significant voltage drop in that case. So I was figuring (again based on nothing at all) when you do see a voltage drop under load it's due to exceeding the max discharge rate of the battery (which most all of our setups do).

 

[lotus14]

Why is that?

I was thinking (based on nothing at all) that any voltage drop under load would be due to the battery not being able to deliver the current. For example that 6.5v though a 5.2 ohm resistance should result in a current of 1.25 amps. The resistance is fixed so if the battery can't deliver that discharge rate then the voltage would drop. I would expect less (or no) voltage drop if it was a high discharge rate battery. Let's say it's a 2500 mAh battery with a max discharge rate of 16C. I wouldn't expect any significant voltage drop in that case. So I was figuring (again based on nothing at all) when you do see a voltage drop under load it's due to exceeding the max discharge rate of the battery (which most all of our setups do).

Basic law of physics. Test it yourself. Make a resistor rig with an atty to hook up to your passthrough, which is plugged up to a USB port you know will push 5v, and more amps than you need. Test the voltage at the PT adapter, then add the resistor rig and see what voltage you get. It will have dropped.

How to test a device under load

 

[Quick1]

Basic law of physics. Test it yourself. Make a resistor rig with an atty to hook up to your passthrough, which is plugged up to a USB port you know will push 5v, and more amps than you need. Test the voltage at the PT adapter, then add the resistor rig and see what voltage you get. It will have dropped.

How to test a device under load

I can't draw any conclusions from that. I wish he would have included the important parameters... and if it's a basic law of physics then there should be a forumla for it

He wasn't sure of the atomizer resistance used for the test. although I am assuming they used the same one though out.
He didn't test measure the resistance of the rig -- wires, solder joints, ...
The batteries he used have a max discharge rate of ??? I think those Tenergys have a max discharge rating of 0.5 amps?
He didn't list the Amp rating of the USB pass throughs. Just said they are the "standard" ones. If they are the ones without the battery what was the Amp capacity of the USB port he plugged them into?

So... I'm sticking with my wild speculation that when you see a voltage drop under load it's because the power supply (battery or otherwise) is insufficient to provide the current that would otherwise be drawn.

I would not expect to see voltage drops anywhere close to those if a 2A power supply was used (battery or passthrough).

 

[Quick1]

Ok, I thought about it a bit more and I think I can clear it up by re-phrasing it.

Premiss: V = IR
V = Voltage
I = current (amps)
R = resistance (ohms)

For our purposes R is fixed. The resistance of the atomizer is fixed.
That only leave two variables, V and I to balance the equation with.

If you pick a Voltage there is some value for I that will balance the equation.
If the capability/capacity of the power supply exceeds that value for I then the equation will balance and I will be that value.

Example:
Power supply is rated at 5v and capable of suppling 2 amps of current.
V = 5
R = 4 (we'll just pick an atomizer with that resistance).
I, according to ohm's law, would then equal 1.25 amps.

Given those parameters and that power supply you would not see any voltage drop in the circuit. Right?

Ok, now lets say our power supply is 5v but only capable of supplying 1 Amp of current.
Now we have reduced I to 1.0
R still equals 4
So now we must have a voltage drop and V = 4.

In this case we see a voltage "drop" in the circuit or difference of 1v between the loaded and unloaded measurements. BUT that's because we restricted I = 1.0

It's due to the limitations of the power supply. Most of these batteries are not capable of suppling that kind of current draw. They *should* be capable of supplying their Max Discharge Rate but most often that's well below the current draw of the circuit without a significant voltage drop. That's why you see a voltage drop.

If you use a high discharge rate battery, one with a discharge rate greater than the current draw, then you would not see a voltage drop. Something like those red ones rated with a 16C discharge rate.

Again, if you have a sufficient power supply for your passthrough you will not see a voltage drop. The Enercell I'm using for example is rated to supply 2 Amps. With a Joye 510 at 2.2 ohms and using the power supply at 5v we would be drawing about 2.3 amps. So I would expect a very small voltage drop (0.6 volts to be exact).

This sound right? Bottom line, if your power supply is sufficient there is no voltage drop across a load so loaded voltage should equal unloaded voltage.

 

[Quick1]

Doh... haha, forgot to tie all this back to the original starting point. I think there were 2 of them actually.

1) wattage (heat) produced.
Yes, you would want to use the loaded voltage -- assuming your power supply isn't sufficient. This would vary from supply to supply. Different brand/rating batteries for example (no, not mAh but max discharge rate in mA or C)

2) Which atomizers will trip these particular batteries and which won't.
Here we can use the unloaded values.
I'm guessing that the trip point will be somewhere between a 2.7 and 2.9 ohm resistance.

 

[lotus14]

I can't draw any conclusions from that. I wish he would have included the important parameters... and if it's a basic law of physics then there should be a forumla for it

He wasn't sure of the atomizer resistance used for the test. although I am assuming they used the same one though out.
He didn't test measure the resistance of the rig -- wires, solder joints, ...
The batteries he used have a max discharge rate of ??? I think those Tenergys have a max discharge rating of 0.5 amps?
He didn't list the Amp rating of the USB pass throughs. Just said they are the "standard" ones. If they are the ones without the battery what was the Amp capacity of the USB port he plugged them into?

So... I'm sticking with my wild speculation that when you see a voltage drop under load it's because the power supply (battery or otherwise) is insufficient to provide the current that would otherwise be drawn.

I would not expect to see voltage drops anywhere close to those if a 2A power supply was used (battery or passthrough).

Instead of speculating, do the experiment and see for yourself, as I did. Use a PT and a 2+amp USB hub. Post the results. You could be famous!

Your next post is right. V=IR. So if your power supply is capable of 2 amps continuous, and your atty (or whatever) only draws 1.5 amps continually, what must happen to V as R is increased?

 

[Quick1]

Instead of speculating, do the experiment and see for yourself, as I did. Use a PT and a 2+amp USB hub. Post the results. You could be famous!

Your next post is right. V=IR. So if your power supply is capable of 2 amps continuous, and your atty (or whatever) only draws 1.5 amps continually, what must happen to V as R is increased?

I'm not sure how to parse that... V would remain constant until I exceeded 2 amps. Only then would V vary. But you said "as R is increased". As R increases I (for the entire circuit) would decrease. Again V would remain constant.

By the way, so far, I know that a 2.4 ohm atty will trip those batteries and a 3.4 ohm atty won't. I'll have to sample around through my atty stock to gradually work my way down to the trip point.

 

[mwa102464]

What about the sleeve's I have been asking for to extend the SB and the BB I pm'ed somebody on this and never heard back from him and sked about it on 2 different post, just a sinple extension tube for the SB so we could fit 2 18650 Batts in it and maybe one that twist open and closed a bit in each direstion so all size battes fit they could be made for each the SB & BB, CMON CHAD AND ROB SOME THOUGHTS PLEASE

 

[cddz]

What about the sleeve's I have been asking for to extend the SB and the BB I pm'ed somebody on this and never heard back from him and sked about it on 2 different post, just a sinple extension tube for the SB so we could fit 2 18650 Batts in it and maybe one that twist open and closed a bit in each direstion so all size battes fit they could be made for each the SB & BB, CMON CHAD AND ROB SOME THOUGHTS PLEASE

Sorry for not answering your PM, been busy I do not recommend stacking batteries so I have no plans of doing this.

 

[Rambosmurf]

Hi All
Got the extended tube for the BB and figured I would share my test results. Up until now I have been vaping only at 3.7v with the regular and new LR attys. So, test results were;
6v-2 Protected crs in extended tube:
801, 901, 302, 112 with adapters all worked fine (OK, vapor and throat hit are off the scale) (I think I hurt myself on the 1st vape, didn't see that change coming)
510 Cartomizers - worked but sounded like a forth of July fireworks show so I stopped that pretty quick. Vape was very, very hot and I probably burned up the filling.
510 Regular attys - I have attys from 2.5 to 3.5, all different types of bridges (low, tall, narrow, wide) and a couple with the ring. The higher the number the better they seemed to perform. All of them worked except for one and I don't know why (low, wide bridge, 2.8). They all vape HOT. It seems as though they are hotter and produce less vapor. Of course I am not holding the button as long as 3.7 so I'm sure that makes a difference. Did I say Hot!!
510 HV Atty - OK, this is better. Hits good and has the vapor.
Taste results are about the same as 3.7V vaping, 801,901, 302, 112 having more flavor, then 510 with HV atty, then 510 with Regular attys.
Now I am in the world of 6v vaping...I wish I had the options for that throat hit when I first quit analogs. Wow, what a difference. The LR atty is more than stock, but 6v is Supercharged. However, for now I must take a break...I'm a little dizzy from the test.

 

[grink]

how long will those 2 cr2s last?

 

[mwa102464]

Chad with the new fuses that can be made for the end cap this would really be cool and safe, I cant see why not but it's your candy shop so I guess off to my budy's shop I will go to make one, I want two 18650 and whatever else I feel like running, I am going to make mine with both ends threaded for aptimum adjustment and maybe even make a couple of them, your work is really nice just got my 2nd SB last week and run them both every day, im not going to mention anyone else in your thread but I think a unit like the sliver bullet that was able to kind of telescope back and forth so it could be any size you wanted to run it on would be one awesome unit, but I totaly inderstand if your not gonna make one and why, Keep up the nice mill work your units are fine tunes bery nicely.

 

[Quick1]

how long will those 2 cr2s last?

Mine usually last up to 4 hours. Haven't got a good handle on it yet. About 4 hours on light vaping. Seems like between 2 to 3 hours, closer to 3 with heavy vaping?

 

[gratefulbuddy]

how long will those 2 cr2s last?

Mine usually last up to 4 hours. Haven't got a good handle on it yet. About 4 hours on light vaping. Seems like between 2 to 3 hours, closer to 3 with heavy vaping?

Same here, I get 2-3 hours from mine.

 

[5th Element]

idk...... i get a good 8 hrs out of my ptotected cr2 1000mahs.. after i charged them a few times. i vape all day lol they are lasting just as long as my tenergy cr123s 750 mah. i and i also am swaping them out b4 they r even dead. i go threw 2 sets and the last set isent dead at the end of the night

 

[grink]

eight hours? wow. those the ones from electronicstix?

 

[Quick1]

idk...... i get a good 8 hrs out of my ptotected cr2 1000mahs.. after i charged them a few times. i vape all day lol they are lasting just as long as my tenergy cr123s 750 mah. i and i also am swaping them out b4 they r even dead. i go threw 2 sets and the last set isent dead at the end of the night

eight hours? wow. those the ones from electronicstix?

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