Cuboid reading wrong higher ohms in all modes

[Paul O'Brien]

Hi just picked up one of these used and having issues with resisatnce readings .
All my tank reading higher than on any other mod by 10-15%
My nautilius mini with 1.8 coils reads 2.06
My Trition 2 with 1.8 coils reads 2.10
My Kayfun mini v3 with 1.65 coild reads 1.85
My bachelor nano with 0.5 coils reads 0.6
My other mods are 2x istick picos

I have loaded different firmware 3.03 3.10 3.11 3.13 and still the same

How will this affect my vaping , as mainly MTL high ohms at 7-8 watts ?
Do I just need to adjust to bring down th voltage a little ?

Should I just try get my money back as this could be a sign of futher failure ?

Any freedback would be most welcome

 

[Pukkita]

Hello Paul,

I own a cuboid, and a P3, and noticed sometimes the ohm readings aren't precise, I think this is normal and has to do with the coil temp at the moment, eliquid residues in the 510, dirt in the battery compartment, etc.

It doesn't affect as far af safety goes, as long as deviations are like the ones you posted. The cuboid is a regulated mod, it regulates the power and that means monitoring resistance, voltages, etc constantly.

I'd try a thorough cleansing, including the attys (using nautilus?), use freshly charged batteries and retest. You'll get closer to "reality" values.

Additionally, mods voltage reading precision is nothing to write home about, as far as I've tested with a precise multimeter.

 

[GeorgeS]

it reads like your using it in power mode? (given the coil values you listed)

The measured resistance won't have any real bearing on your vape in Power mode.

In the other (read TC) modes you'll need TC coils. Generally speaking factory TC coils have <= 0.5 ohms.

I have dozens of mods and they all read differently.

 

[52anddone]

My nautilius mini with 1.8 coils reads 2.06

I also have a Nautilius mini with 1.8Ω factory coils in it and it reads 2.01Ω sitting on my Presa 75 Watt TC mod. So, In that case I tend to think that it's the coils being out of spec from what is listed on the package, not the mod being goofy. I also have the 1.6Ω coils that read 1.83Ω on my VTC mini in that same Nautilius mini all juiced up and ready to go, and I have seen plenty of 0.5Ω Kanthal or Ni-chrome coils (I don't really Know which wire it is, the package says Kanthal but the wire looks too shinny to me for Kanthal) reading from 0.4Ω up to 0.62Ω (all factory coils by the way) in my Tron-S on both my VTC mini and Presa 75 Watt TC mods. In Power mode I don't worry too much about it at all, I just juice it up and vape, no other problems here.

 

[52anddone]

The measured resistance won't have any real bearing on your vape in Power mode

That's how I feel also George, ramp up time might be a little different running the same wattage, but that's about it in Power mode.

 

[NealBJr]

Hi just picked up one of these used and having issues with resisatnce readings .
All my tank reading higher than on any other mod by 10-15%
My nautilius mini with 1.8 coils reads 2.06
My Trition 2 with 1.8 coils reads 2.10
My Kayfun mini v3 with 1.65 coild reads 1.85
My bachelor nano with 0.5 coils reads 0.6
My other mods are 2x istick picos

I have loaded different firmware 3.03 3.10 3.11 3.13 and still the same

How will this affect my vaping , as mainly MTL high ohms at 7-8 watts ?
Do I just need to adjust to bring down th voltage a little ?

Should I just try get my money back as this could be a sign of futher failure ?

Any freedback would be most welcome

Ok.. I never checked the variance, but I did for this post. Here's the result:

Kanthal A1 in a Taifun GT2.
Cuboid: .79 ohms
Cloupor mini: .76 ohms
Sigeli 100 (first gen) .8 ohms.
Releaux RX200 .72 ohms.

RBA TFV4 w/kanthal:
Cuboid .96 ohms
Cloupor Mini .86 ohms
Sigeli 100(first gen) .8 ohms
Releaux RX200:.85 ohms


It does seem to rate all a bit higher, but not by much. Let me try something lower. (doing this as I type)
Derringer dripper with Nichrome
Cuboid: .57 ohms
Cloupor mini .47 ohms
Sigeli 100 (first gen) .5 ohms
Releaux RX200: .46 ohms

that actually offered me some insights... the cuboid does tend to rate higher than the other mods.. although not by a huge amount. My guess would be that there is a higher internal resistance due to the pin/wiring/electronics that the others just don't do. that will affect the overall power, since you'll need to up the wattage to get the same vape. it's a whole .1 ohms different when it gets below the .5 ohms.... If I set all my mods to 30 watts on that derringer dripper, it would use 3.7 volts for the cloupor and releaux, but the cuboid would be using 4.13 volts. Not enough to make it a deal breaker, but usefull info to have.

 

[KenD]

The measured resistance won't have any real bearing on your vape in Power mode

Well, yes it will. If the resistance reading is wrong the watts you get is different from the watts you set.

Sent from my M7_PLUS using Tapatalk

 

[Winchester]

Much to do about nothing! Get a good ohms meter. All my mods have different ohms reading. Keep in mind the reading you are getting is like the expiration date on milk it's just a suggestion.

 

[GeorgeS]

Well, yes it will. If the resistance reading is wrong the watts you get is different from the watts you set.

Well um.... NO.

On a VW device as long as the resistance of the coil is within the range of the device it does not matter. Its FIXED WATTAGE. Set your wattage to 20W and if you have a 0.1, 0.5, 1.0 or 1.5ohm coil the function of the MOD is to fire the coil at the FIXED WATTAGE setting you selected.

The concept is that when people are juggling different pre-built resistances, in the VV days the 1.2 ohm coils would hit harder than the 1.8 ohm coils. VW changed all that so both coils would hit the same.

Power/Wattage mode is regulated wattage at whatever value you set it to.

 

[KenD]

Well um.... NO.

On a VW device as long as the resistance of the coil is within the range of the device it does not matter. Its FIXED WATTAGE. Set your wattage to 20W and if you have a 0.1, 0.5, 1.0 or 1.5ohm coil the function of the MOD is to fire the coil at the FIXED WATTAGE setting you selected.

The concept is that when people are juggling different pre-built resistances, in the VV days the 1.2 ohm coils would hit harder than the 1.8 ohm coils. VW changed all that so both coils would hit the same.

Power/Wattage mode is regulated wattage at whatever value you set it to.

If the coil is .5Ω but the device reads it as .6Ω, the watts will be off. The device will fire at the 3.16v required to get a .5Ω coil to your set 20w, but instead you'll end up with 16.65w. If the coil is erroneously read as .4Ω instead you'll end up with 25w instead of the expected 20. Watts are a result of volts through a certain resistance, not something that can be adjusted independently (the mod does the calculations required), so yes, if the resistance is read wrong the watts will most definitely be off.

Sent from my M7_PLUS using Tapatalk

 

[Spey]

I initially had two Cuboid's (sold one, still using the other). Both read resistances of atty's the same. Both read resistances about .01 - .02 higher than my most accurate and consistent device. There is less (like next to zero) wiring inside the device (all one circuit board), but that elimination of wiring should , if anything, mean that it might read slightly lower resistance since there's less internal wiring. In general, my experience illustrates Cuboid to be fairly accurate. I have read a number of posts by others to the contrary though.

 

[sacullen]

If the coil is .5Ω but the device reads it as .6Ω, the watts will be off. The device will fire at the 3.16v required to get a .5Ω coil to your set 20w, but instead you'll end up with 16.65w. If the coil is erroneously read as .4Ω instead you'll end up with 25w instead of the expected 20. Watts are a result of volts through a certain resistance, not something that can be adjusted independently (the mod does the calculations required), so yes, if the resistance is read wrong the watts will most definitely be off.

Sent from my M7_PLUS using Tapatalk

Er, wouldn't the voltage be different instead of the wattage? If the mod is incorrectly reading coil resistance, it doesn't know the real resistance is 0.5 ohms. Therefore, it won't know to apply that 3.16V.
Here's how I envision this scenario.
Me: I'm going to put on this 0.5 ohm coil and set my mod to 20 watts, which means 3.16V should be applied.
Mod: Hey! Someone just put on a 0.6 ohm coil and set me to 20 watts. I'll need to apply 3.4V to do that.
*Takes a vape*
Me: That was unpleasant.

 

[KenD]

Er, wouldn't the voltage be different instead of the wattage? If the mod is incorrectly reading coil resistance, it doesn't know the real resistance is 0.5 ohms. Therefore, it won't know to apply that 3.16V.
Here's how I envision this scenario.
Me: I'm going to put on this 0.5 ohm coil and set my mod to 20 watts, which means 3.16V should be applied.
Mod: Hey! Someone just put on a 0.6 ohm coil and set me to 20 watts. I'll need to apply 3.4V to do that.
*Takes a vape*
Me: That was unpleasant.

I got the calculations wrong, I'll edit my post. However, both the voltage and actual wattage would be wrong. The two can't be separated.

Sent from my M7_PLUS using Tapatalk

 

[KenD]

If the coil is .5Ω but the device reads it as .6Ω, the watts will be off. The device will fire at the 3.16v required to get a .5Ω coil to your set 20w, but instead you'll end up with 16.65w. If the coil is erroneously read as .4Ω instead you'll end up with 25w instead of the expected 20. Watts are a result of volts through a certain resistance, not something that can be adjusted independently (the mod does the calculations required), so yes, if the resistance is read wrong the watts will most definitely be off.

Sent from my M7_PLUS using Tapatalk

I made some errors in my calculations so here's a corrected post:

If the coil is .5Ω but the device reads it as .6Ω, the watts will be off. The device will fire at the 3.46v required to get a .6Ω coil to your set 20w, but instead you'll end up with 24w. If the coil is erroneously read as .4Ω instead the mod will fire at 2.83v and you'll end up with 16w instead of the expected 20. Watts are a result of volts through a certain resistance, not something that can be adjusted independently (the mod does the calculations required), so yes, if the resistance is read wrong the watts will most definitely be off.

Note! Both the watts and volts will be off, the two can't be separated.

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