Burnt taste?

[H4X0R46]

Hello guys! So I noticed that my crown 2 seems to give off a bit of a burnt taste with a longer drag, goes away once I give it a second to rewick. I'm using a 0.5 ohm coil at 60w. My question here, does lower ohm coils eliminate this issue and handle higher wattages without dry hits? Would say, a 0.25 ohm coil be more suited for a 60w vape?

 

[Synphul]

It sounds like the wattage is too high. If the wick can't keep up with the heat of the coil it will dry out and start tasting burnt. If there's not enough airflow the juice itself may be burning a bit. Sometimes it depends on the juice itself, some I've noticed tastes ok at higher temps or wattage than others which begin tasting a little burnt and requires turning it down.

Lower ohm coils would help I suppose, it would take more power to heat them up and ramp up time may be delayed. I think similar could be achieved by turning down the wattage, is there a reason it has to be a 60w vape? Usually with a variable wattage mod it makes it easier to vape since whether it's a .25, .5 or 1.0 ohm coil the power can be adjusted on the fly as needed. Rather than the other way around, unless it's a mech mod. Then the coil is what needs changed to alter the vape.

 

[H4X0R46]

It sounds like the wattage is too high. If the wick can't keep up with the heat of the coil it will dry out and start tasting burnt. If there's not enough airflow the juice itself may be burning a bit. Sometimes it depends on the juice itself, some I've noticed tastes ok at higher temps or wattage than others which begin tasting a little burnt and requires turning it down.

Lower ohm coils would help I suppose, it would take more power to heat them up and ramp up time may be delayed. I think similar could be achieved by turning down the wattage, is there a reason it has to be a 60w vape? Usually with a variable wattage mod it makes it easier to vape since whether it's a .25, .5 or 1.0 ohm coil the power can be adjusted on the fly as needed. Rather than the other way around, unless it's a mech mod. Then the coil is what needs changed to alter the vape.

60 is just what I got used to lol I could turn it down a bit, I'm using an RX200S so it's regulated. What's weird is that 60w is in the range of what the 0.5 ohm coil is rated for, is this usually a good guideline or just a guess? Thanks for replying!

 

[Synphul]

I started getting away from the details of it so much once I realized regulated vv/vw mods don't really rely on hard figures like a mech mod does. Maybe there's a better way to do it, my experience has been more trial and error. It seems others vape at higher wattages than I do but then many are vaping on dual coil builds while mine are single coil.

It may not be the same, I haven't used prebuilt coils since I stopped using clearomizer ego style vape stuff. I wrapped my coil and use it on an rta. It comes out to around .51 and I've been vaping various flavors at around 32w. Some flavors seem a little muted or if the vape doesn't feel warm I turn it up to 35w, other times it starts tasting a bit off. Not quite burnt but overcooked almost so I turn it down to around 30w.

Premade coils seem to come with a wattage range but I'm really not familiar with them. Not sure if it's a suggestion or more or less to give an idea so people don't grab a coil and try vaping it at 120w and burn the coils out. My method isn't very scientific at all, maybe others will have better info in regards to better settings. Instead I start off lower and if not getting much vapor or if the vape's too cool I turn it up a little but basically leave it up to taste. I tend not to worry so much because I'm not running anywhere close to 50w+ and it's a dual 18650 mod.

Just for the fun of it I went to steam-engine's website and factored in all the details, wire type, twist count, single coil, leg length etc. It said at around 50w I should be getting a 'warm' vape. Tasted almost immediately burnt.
http://www.steam-engine.org/

I'm more about taste than clouds and taste is subjective so hardly scientific. It could be my particular rta though, it doesn't have wide open airflow like some do. That could definitely affect my personal experience vs yours vaping on a different tank.

After a little checking around it seems some people are having issues with the crown II coils including the .5 ohm ones. Dry hits, coils burning out, burnt taste. Someone on another forum mentioned poking holes into the juice flow holes poking the wicking with a needle and how difficult it was. It sounds like they may have had an issue packing the cotton wicking in there too tight. That could cause a dry hit for sure if the wicking isn't keeping up. When it's saturated with juice it would probably vape fine, once taking a few vapes esp at higher wattages it could use up the juice in the wick and not be able to reabsorb more juice in time for the next hit. Others suggested trying thinner juice, higher vg juices wick a bit more slowly and may contribute to the problem.

Another person said they contacted uwell and found there may have been a printing error on the coil package. That the lowest wattage listed was actually supposed to be the highest wattage. They said for the .5 ohm coils that would be 50w max. Take it with a grain of salt though, just passing along info I came across from another user so no way to verify if that's true or not.

Here's a review with some folks having similar issues within the past 5-6mo in the comments section.
http://vaping360.com/uwell-crown-2-review/

 

[H4X0R46]

I started getting away from the details of it so much once I realized regulated vv/vw mods don't really rely on hard figures like a mech mod does. Maybe there's a better way to do it, my experience has been more trial and error. It seems others vape at higher wattages than I do but then many are vaping on dual coil builds while mine are single coil.

It may not be the same, I haven't used prebuilt coils since I stopped using clearomizer ego style vape stuff. I wrapped my coil and use it on an rta. It comes out to around .51 and I've been vaping various flavors at around 32w. Some flavors seem a little muted or if the vape doesn't feel warm I turn it up to 35w, other times it starts tasting a bit off. Not quite burnt but overcooked almost so I turn it down to around 30w.

Premade coils seem to come with a wattage range but I'm really not familiar with them. Not sure if it's a suggestion or more or less to give an idea so people don't grab a coil and try vaping it at 120w and burn the coils out. My method isn't very scientific at all, maybe others will have better info in regards to better settings. Instead I start off lower and if not getting much vapor or if the vape's too cool I turn it up a little but basically leave it up to taste. I tend not to worry so much because I'm not running anywhere close to 50w+ and it's a dual 18650 mod.

Just for the fun of it I went to steam-engine's website and factored in all the details, wire type, twist count, single coil, leg length etc. It said at around 50w I should be getting a 'warm' vape. Tasted almost immediately burnt.
http://www.steam-engine.org/

I'm more about taste than clouds and taste is subjective so hardly scientific. It could be my particular rta though, it doesn't have wide open airflow like some do. That could definitely affect my personal experience vs yours vaping on a different tank.

After a little checking around it seems some people are having issues with the crown II coils including the .5 ohm ones. Dry hits, coils burning out, burnt taste. Someone on another forum mentioned poking holes into the juice flow holes poking the wicking with a needle and how difficult it was. It sounds like they may have had an issue packing the cotton wicking in there too tight. That could cause a dry hit for sure if the wicking isn't keeping up. When it's saturated with juice it would probably vape fine, once taking a few vapes esp at higher wattages it could use up the juice in the wick and not be able to reabsorb more juice in time for the next hit. Others suggested trying thinner juice, higher vg juices wick a bit more slowly and may contribute to the problem.

Another person said they contacted uwell and found there may have been a printing error on the coil package. That the lowest wattage listed was actually supposed to be the highest wattage. They said for the .5 ohm coils that would be 50w max. Take it with a grain of salt though, just passing along info I came across from another user so no way to verify if that's true or not.

Here's a review with some folks having similar issues within the past 5-6mo in the comments section.
http://vaping360.com/uwell-crown-2-review/

Thanks for the lengthy write up! This was a good read and I'm honestly surprised that uwell would make a misprint on their coils! (of course assuming it's true) I tried dropping my wattage down to about 50W - 55W and it seems to have helped with the burnt taste a bit, It's still a satisfying vape to me in that range, I may try out a 0.25 ohm coil (I still have the one in the Crown 2 box, never used it) and see if I like the lower resistance more. It will serve as a tester and if I like it, I may switch and start buying them.

Side question for you here. I've been told that coil resistance doesn't mean much on a regulated mod yea? I know for a mech it's CRITICAL, but If I were to say, vape a 0.1 ohm coil, it would be fine? Of course assuming I stay in my safe ranges for wattage, If I'm right, 150W would be pulling 16.6A per cell on an RX200S? (3 cell mod) Thanks for your insight! Much appreciated! Vape on!

 

[Synphul]

That I'm not sure, different mods have different specs. Some are capable of putting out 'up to' say 200w but once resistance drops to a much lower range like .1 it may be limited to 120w (just an example, not a specific or accurate measure). Part of it is the battery specs, part of it is also the mod I believe. It also depends on the quality of the batteries, unless I missed it you didn't mention what brand/model (ie, samsung 25r, lg h2, lg h4, sony vtc5, efest..?).

There's some good info here from Mooch's battery testing.
http://vaping360.com/guides/battery-safety/

It's possible to have 3 20a 18650's from a well known brand/maker and 3 20a 18650's from a cheaper brand that turn out to be overrated (literally their specs over rated) or rewraps and pushing them beyond their actual physical limits could result in bad things. Usually regulated mods have various protections built in but over stressing the batteries consistently (ie using bad/poor choices) may still not end well.

I'm not sure how the rx200s is setup, if it uses the batteries in series or parallel. Looking at steam engine's calculator unless I read it wrong it looks like in parallel the batteries would be pushing around 40a at .1 ohm and 150w. Divided by 3 would be around 13.2a and the calculator is showing 40% headroom left. If in series, it shows roughly the same 13.23a and 40% headroom. It's a matter of lower A and higher V or the other way around, lower combine V and combined A ratings. Those figures I came up with were based on samsung 25r's which are 2500mah batteries rated to 20a. Changing the batteries may change the outcome on the calculator.