SXmini M Class (TEMP CONTROL)

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tchavei

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No, I think I'm gonna sell it. I don't like it.
You already were saying that before you order it so I guess your predictions were spot on?

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Tony

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druckle

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When I first got my rDNA40, I noticed that the atomizer was getting warm so I took off the sharkskin and the mod itself was still very cool. None of my DNA40's get warm while vaping. The SXM does.
You may have faulty DNA devices if your boards aren't getting warm. Physics is the same everywhere in the universe.

All my DNA devices get warm with significan't use.

Duane
 
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druckle

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tchavei

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druckle

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Yozhik

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Bizarre if anything the SXM has been cooler for me. But it's a big lump of metal especially given the 510 will conduct heat.

My RDNA gets warms @40W and .1 NI200?!

Sent from my SM-G900F using Tapatalk

Could also be the battery. Maybe swapping batteries between devices could change things.
 

tchavei

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Yozhik

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I wasn't exactly sure. I usually try to keep an open mind with new stuff. I did have some reservations after I ordered though.

I vape it exactly like I do with my DNA40's and the only difference is that the SXM gets warm, the DNA40's don't. I took the KF4 off my Hana V4 and vaping it on the SXM now. I'll give it a day.

Did you try swapping batteries too?
 

druckle

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KTMRider

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tchavei

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No thanks. you've convinced it's defective and I trust your judgement. Advertise it as a defective and with a price appropriate for a defective unit. You'll find someone who will bite.

Duane
I think that he thinks that it's a design problem and not a defective unit?

Regards
Tony

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KTMRider

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No thanks. you've convinced it's defective and I trust your judgement. Advertise it as a defective and with a price appropriate for a defective unit. You'll find someone who will bite.

Duane
I never said it was defective. I just asked if it was normal. Everyone here defended it being normal.
 

jazzvaper

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I never said it was defective. I just asked if it was normal. Everyone here defended it being normal.

Just for the record:

I have a VS rDNA with an authentic K4 atop, and, an SX with a SquapeR(s) atop. Both are wearing a silicone sleeve. Alternately vaping each. I put my palm on one then the other.

The rDNA is the warmer of the two, only slightly, but warmer. I know the K4 tends to vape warmer. Perhaps that is what you are experiencing?

I have no need to "covert" you but warmer is NOT what I experience.
 

Silver5656

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It's def not normal. I've read many of ktmriders posts (mostly in the rdna super post) and he doesnt seem like the kind of person to exaggerate. While I don't have any ownership experience with the sxmini, I did get a chance to play with a friends for a few days. I "stress-tested" it (ie testing the temp control properties) by chain vaping, and playing with the wattage/joules, and it NEVER got warm at all. I also have 6 dna devices (4 dna 40 and 2 dna 30) and they do not get warm at all as well. I believe ktmrider should return the device to the vendor and ask for a new one. Just as reference, I have gotten a subtank mini VERY warm by chain vaping it, and NO device has gotten warm (yes, slightly warmer than room temp, but I assume that's because I've been holding it in my hand for a while).
 
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jazzvaper

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It's def not normal. I've read many of ktmriders posts (mostly in the rdna super post) and he doesnt seem like the kind of person to exaggerate. While I don't have any ownership experience with the sxmini, I did get a chance to play with a friends for a few days. I "stress-tested" it (ie testing the temp control properties) by chain vaping, and playing with the wattage/joules, and it NEVER got warm at all. I also have 6 dna devices (4 dna 40 and 2 dna 30) and they do not get warm at all as well. I believe ktmrider should return the device to the vendor and ask for a new one. Just as reference, I have gotten a subtank mini VERY warm by chain vaping it, and NO device has gotten warm (yes, slightly warmer than room temp, but I assume that's because I've been holding it in my hand for a while).

For the "test" I just did both devices were put down on a flat surface (cloth). So my hand had nothing to do with the temperature. ;)
 

Silver5656

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Hmmmm maybe it's me and I just got lucky on all my devices, but the only device that gets warm are my isticks and my dna 30's WHILE charging. My dna 40 gets ever so slightly above room temp while charging. I did not usb charge the sx mini as my friend asked me not to. But none of my devices get warm to the point where I notice, even when I am monitoring the warmup. If someone has a few hours, they could do some testing with a cheap amazon temp reader (for 15 bucks or so)
 

Yozhik

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Just as reference, I have gotten a subtank mini VERY warm by chain vaping it, and NO device has gotten warm (yes, slightly warmer than room temp, but I assume that's because I've been holding it in my hand for a while).

I've noticed that my STM runs hotter than other tanks. Regardless, I've pretty much retired it for the Lemo 2 (provided I'm willing to take off the GEM RTA - that thing rocks, but obviously a different vape style). Also, until I find where the STM's RBA went (I suspect it found a very good hiding spot), it's not much use to me anyway. ;)
 

KTMRider

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I have a Raytec thermal reader. I just did a test on both devices.

Freshly charged batteries in both mods. I puffed 30 times on each, same way I normally vape, about 2-3 sec puffs but with a 2-3 sec pause between vapes. Ambient temp is 85°F (yeah, it's hot in NJ). Both mods and atomizers were 85°F at the start of the tests. I held each mod with my finger tips with the least amount of contact as I could.

SX Mini M - KF4, full tank of juice (Lenola Cream), 28g Ni200, .10Ω, 20j, 380°F. The KF4 became warm as usual, 100°F at it's hottest point (I took readings top to bottom). The SXM at it's hottest was 99°F at the display and 93-98°F around the body. The c-frame was hottest at the screen, not near the atomizer or at the battery cap. Makes sense since the SX350 board has a coil there. On the side of the SXM, it was warmest at the center of the mod by the screen again.

VS rDNA40 (no sharkskin) - KF4, full tank of juice (Honey dew/pear mix), 28g Ni200, .12Ω, 20w, 430°F. Similarly, the KF4 was 100°F at it's hottest point. The rDNA was 94°F at it's hottest point, just around the atomizer base. 89-93°F everywhere else.

This confirms my experiences. Like I said, the SXM isn't uncomfortably warm to hold but it is warmer than the VS or other DNA40 mods I own when vaping as I normally do. I'm actually surprised it wasn't hotter and there was only a 5°F difference.
 
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JimScotty0

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I've seen DNA devices held together with hot glue, put in candy tins, plastic battery boxes etc.. Using DNA-40 is generic term and could be any of those. Heat transfer is directly associated with the type of materials used, how the electronics are mounted, power output etc. The Sxmini m pcb is solidly connected to the zinc alloy c-frame with SS screws so that may be why you perceive a difference. But they all produce heat in the circuitry of the device, some may dissipate heat better than others just depends on the materials used how it's mounted and power settings.
That is the way I see it too. With the SXM and the metal frame directly connected to the atty the heat is dissipated very quickly into the mod and also discharged very quickly. I rarely find it too warm though. I remember using my eVic Supreme at around 26w or more it would heat up so much it would be hard to handle.

Since I don't see it getting warm all the time, I wonder if it is just a battery that is just getting hotter than normal. I have several varieties so next time I notice it warmer than normal I will take note of the battery. Maybe I am pushing the battery to the upper end of its limits. :smokie::danger::smokie:
 
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ZeroOhm

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@ktm not being pedantic here but what's the error rate on temp reader and how were the mods handled for testing. The numbers you are telling us could well be standard deviation and subjective. A lot said on forums are merely opinions even big Phil's testing equipment may or may not be calibrated I have never seen any official calibration certificates.

On a purely observational note the original SX350 I always felt was warmer but in comparison to what?

I have 6 different DNA40 mods wood, 3D printed and metal some are warmer than others and I am guessing from V2 to V5 versions of the 40 chip I can't say for sure as evolv don't actually tell us what versions of the boards are.

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PapaPro

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I can confirm that my M class and authentic kayfun V4s do sometimes get hot. But I am sure-ish it's the battery as I run out of power, changed battery, and my efest was really hot. Hotter than my M class! I did think at the time it was my cell.

Still, this is not a fact but there could be something here we all should keep an eyen on. We all should also know that most of the cells are re-wraps. I forgot where that link I posted is but there is a web site that has tested nearly every battery out there. Perhaps some kind soul will dig that up.

Good stuff people and let's find out if our cells or our MODS creats some extra heat.
 
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