Istick 30W vs 50W at same wattage setting

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Road_House

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May 12, 2013
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Has anyone compared the same topper on both the 30W and 50W at the same wattage and found the 50W produces a weaker vape?

I just got my 50 and I have to run 35+ watts to get the same vapor and throat hit I get on the 30 at 18 watts. I pulled the wick and dry burned the coil on both. The 50 took much longer to glow and was also weaker glow than the 30W at the same wattage setting.

Watts up with that? I thought both ran RMS. My vendor tells me the 30 runs average voltage and the 50 is RMS. I thought I read on here that the 20 ran on average voltage and that is why some thought it ran "hot" for the wattage setting they were used to and that all went away when the 30 came out with RMS. Do the 30 and 50 not both use RMS voltage?

The vendor says all is normal. I say the difference is so dramatic I'm thinking something is not right. Just need some proof to back up my claim, if I have one.
 
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Completely Average

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Are you trying to compare the 50W with the 30W or 20W?

Your title says 30W vs 50W, but everything in your thread compares it to the 20W.


The 20W does not run "average voltage" whatever that means. The 20W does not have voltage step-down capability, so if you select a wattage that results in a lower voltage than the battery charge then it's going to run at whatever the battery charge is.

For example....

If you are running a .5ohm coil and selected a wattage of 18W that would result in 3V. However, if your battery is fully charged then the battery is putting out 4.2V which is what the 20W will run the coil at. It cannot run any lower than the battery voltage.

So, the 20W is really running at 4.2V with a .5ohm coil which gives you 35.28W


So yes, you would need to run the 50W at the 35.3W setting to get the same vape as the 20W with both using the .5ohm coil and a full 4.2V battery charge.


The vendor is right. This is normal.
 

Road_House

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May 12, 2013
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Dang it. As the title stated, comparing the 50 to the 30, not the 20. I did the same thing in my e-mail to the vendor :unsure:

I only intended to mention the 20W once regarding comments others saying it ran hot and that changed with the 30. That leads me to assume the 30 and 50 should be no different in the way they deliver power and I shouldn't be getting such drastically different results.

I will edit the original post. Sorry for the confusion.
 

Road_House

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May 12, 2013
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After some more fiddling I can report that I have to run my 50W istick up to over 40 watts before I get a vape comparable the the 30W istick set to 16 watts.

I have a Vamo v2 that can be set to either average (mean) voltage or RMS (root mean square) voltage so I am familiar with the difference each setting makes to your vape at any given wattage setting. Average voltage seems to have a perceived wattage a few watts higher than the RMS setting, at least on the Vamo.

The 24+ watt spread between the 30W and the 50W to get a comparable vape is just not right as far as I'm concerned. Any others out there that have both these isticks that can chime in? The vendor is ascribing the difference to the 30w being average voltage and the 50w being RMS voltage. I'm not buyin it.
 
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