New Grabber-Mod with PTH08T221W 16-Amp limit

[jyjarvi]

Hi

My new mod is quite a beast with a PTH08T221W circuit and 16Amp limit.I build this mod today and tested it with RSST-atomizer 0,6 ohm setup and 5,45 volts -->result was 49,5watts.

There is 2x18350 AW IMR batteries inside and the height of mod is 8cm,the voltage range is 3,0 volts to 5,45 volts.



- JJ

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[asdaq]

Nice powerhouse you have there JJ, how big is that board and where is the voltmeter in the mod? I bet some modders would complain that it doesn't do a full 50 watts, but I won't name names.

 

[jyjarvi]

Hi

The board size is 2cm x 2,5cm and the voltmeter is located at the bottom of the mod.

-JJ

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[Jimi D.]

I would love to have one for all my Filipino monster atties !

 

[dr g]

Ok NOW I get to question the design choices.

Are you using the inhibit function with that button?
Why did you go with 18350s in this application?
What coil build are you using in that RSST for this?

 

[tmassey]

volt meter placement just makes it epic, cant complain about 50 watts either.
its probably just the angle of the picture but i cant even see a wick. and what do you have so against horn buttons dr. g some ppl just prefer a big fire button, myself included.
what have you been making the enclosures out of? ive never seen anything like yours. very nice build jy

 

[jyjarvi]

Ok NOW I get to question the design choices.

Are you using the inhibit function with that button?
Why did you go with 18350s in this application?
What coil build are you using in that RSST for this?

Hi

1. I am not using the inhibit function
2. I used the 2x18350s because i wanted to keep the mod size as small as possible
3. I used 400 mesh and A1 28AWG kanthal

The body of the mod is built from two different size of plastic tubes and it is coated with contact plastic.

- JJ

 

[dr g]

volt meter placement just makes it epic, cant complain about 50 watts either.
its probably just the angle of the picture but i cant even see a wick. and what do you have so against horn buttons dr. g some ppl just prefer a big fire button, myself included.
what have you been making the enclosures out of? ive never seen anything like yours. very nice build jy

Nothing against the button per se, although I do think having to spec buttons for full battery power tends to make them overly large (behind the panel). In this application however, that horn button is underspecced.

18350s in this application are massively underspecced, that is a bad design decision.

If you are going to have a device capable of 88 watts, 18350s are inappropriate.

 

[tmassey]

My only comeback is he's already getting 50 watts out of it with 18350's. have you ever gone over 50 watts? If so, why?

 

[dr g]

My only comeback is he's already getting 50 watts out of it with 18350's. have you ever gone over 50 watts? If so, why?

50 watts is roughly equivalent to a 0.2-0.3 ohm mech coil, which is not that uncommon. However he could have gotten 50 watts out of the previous device. Going to the higher rated regulator in this case appears to be stat chasing, especially given the other equipment choices. Running this regulator past the 10 amp output mark is really pounding these batteries, even when fully charged.

From experience, AW 18350s don't last very long pushed into the 5+ amp range, let alone the 6-10+ amps this rig would be pulling from them at higher wattages. Note that AW 18350 batteries are rated at 6A max continuous.

 

[asdaq]

Burning juice is also not that uncommon, doesn't mean everyone should do it. Dr g, you say he is stat chasing, but I think he just wanted to show what it could do on the upper end, not for everyday use. JJ wanted to try out this board, which I have seen used for the first time, and he wanted to use 18350's to keep the size down. He already has a triple tube with 2 18650's and probably wanted to try something smaller this time.

As for the the 18350's themselves, that rating is continuous, which in vaping we don't actually use continuous. Just how long would you hold the button down in a 50w setup?

Bottom line is, JJ built this mod for himself and he seems satisfied with it, which is what is most important. He is probably never going to sell you one, so a remark like "that is a bad design decision" is both unfounded and stifling. This, as your discussion about inhibit pins and tact switches, is not your way or the highway, so lighten up some, dude.

JJ, thanks for sharing this as well as your other fine mods, and certainly big thanks for trying out this new board. I look forward to your next.

 

[dr g]

Burning juice is also not that uncommon, doesn't mean everyone should do it. Dr g, you say he is stat chasing, but I think he just wanted to show what it could do on the upper end, not for everyday use. JJ wanted to try out this board, which I have seen used for the first time, and he wanted to use 18350's to keep the size down. He already has a triple tube with 2 18650's and probably wanted to try something smaller this time.

50w is not the upper end of this board. Size is just another specification. If you are running big power and want to use IMR chemistry, generally speaking you need big batteries and a bigger device.

As for the the 18350's themselves, that rating is continuous, which in vaping we don't actually use continuous. Just how long would you hold the button down in a 50w setup?

Depends on the ramp-up time of your coil/wick setup. Could be short, could be long. That's the thing about regulated setups, you can push wattage through high resistance (long) coils.

Bottom line is, JJ built this mod for himself and he seems satisfied with it, which is what is most important. He is probably never going to sell you one, so a remark like "that is a bad design decision" is both unfounded and stifling.

It's not unfounded at all, the specs of this device put a huge part of its performance envelope in the "red zone" for the parts chosen. Some might call running batteries entirely in pulse drain -- and increasing as they wear down -- downright dangerous, particularly stacked batteries. I have actually not seen a pulse drain rating for AW 18350s, have you?

This smacks of stat chasing right into an area some might call reckless. In any event the batteries are run very hard in this setup, the double 18650 chassis is far better suited to this mod. Sometimes design decisions make you question the thought process and this is one of them.

 

[jyjarvi]

Hi

Despite the fact that the mod has lots of potential and power i am normally vaping about 8-15watts of power

- JJ

 

[dr g]

Hi

Despite the fact that the mod has lots of potential and power i am normally vaping about 8-15watts of power

- JJ

Then why build a mod capable of 88 watts? Especially if small size is a factor, you can do better with a smaller boost board and a single cell.

 

[jyjarvi]

hmm i have make numerous mods using different kind of boards and setups
this is only one of them and imo it is quite unique, maybe you make a better one

- JJ

 

[asdaq]

The atty and voltmeter already require that the electronics tube is going to be about a 22mm tube, so there is room to get this board in there. Yet, using two tubes makes it a smaller mod than using three. Knowing that 'regular' use is in the 8-15W range, I don't see this as a dangerous situation for the batteries, do you? As for the intermittent amperage of the AW's, no, I have not seen a listing, so an educated guess would give them a conservative 8A rating, and not so conservatively maybe 9A.

 

[dr g]

The atty and voltmeter already require that the electronics tube is going to be about a 22mm tube, so there is room to get this board in there. Yet, using two tubes makes it a smaller mod than using three. Knowing that 'regular' use is in the 8-15W range, I don't see this as a dangerous situation for the batteries, do you?

"Regular use" is inconsequential, that's just a decision made by the user at a given time. Regular use may change, I know mine has over time as I figured out the capabilities of my mods and atomizer builds. And there's always the possibility of the mod seeing "irregular use" for whatever reason.

As for whether it's dangerous per se, I don't know how literally dangerous it is, I'm actually not one to hype up the dangers of hard battery use in vaping. However I do know that others do consider this use dangerous. Personally I would not spec a battery that could not handle near the max amp draw of the device or more continuously, I consider pulse draw my margin of safety. A bonus is that batteries specced like this perform better. In this case I know that these batteries will be shredded by the upper half of the module's power output range.

As for the intermittent amperage of the AW's, no, I have not seen a listing, so an educated guess would give them a conservative 8A rating, and not so conservatively maybe 9A.

And this mod can exceed that substantially. Hence my point.

This converter is not one to attach small batteries to.

 

[jyjarvi]

Hi

let's say you own a car that can exceed 200MPH, does it mean that you have to drive that fast all the time.

- JJ

 

[dr g]

Hi

let's say you own a car that can exceed 200MPH, does it mean that you have to drive that fast all the time.

- JJ

Bad analogy, a car that can exceed 200MPH is usually designed to do it throughout all systems of the car. This is like a racing engine in a family car chassis, on R rated tires, with a 3 gallon gas tank.

If a car were built with the ability to exceed its parts' ratings to this degree, it would be a huge liability issue. And it's actually illegal in most places to drive it that fast.

 

[asdaq]

Hey, I'm not sure we can do car analogies here, it isn't Slashdot guys.

For myself, regular use has come to mean the same thing all the time but with stability. For a long time I've stayed at 2ml of 24mg a day, and for over a year I've given up on VV/VW for a regulated 4.4v and just some fluctuation in coil ohms, 2-2.6. On some occasions I'll do a mechanical smaller mod with some lower ohm 28G, but still above 1.5 ohms. Probably sounds strange to most other peeps....

For me, 50W seems insanely high, but that is just me.