Thanks for the write up. I'm getting a Blotto from forum member tomorrow and looking forward to building and setting it up.
The Blotto RTA by Vaping Bogan and Dovpo
- Thread starter Rob Fisher
- Start date
Thanks for the write up. I'm getting a Blotto from forum member tomorrow and looking forward to building and setting it up.
I just built my very first coil. It was a single 4mm coil to use in the Blotto, as I was finding that the dual 3mm coils were not working out great for me and would burn out quicker. Maybe I'll try and build 2.5mm coils next time.
For the 4mm coil I built I did 6 wraps and when I was installing it, it came out to around 0.36ohms, which might be a little high. Do I build the next coil with more wraps next time or less wraps to reduce the ohms?
However after I installed wicked and juiced it up, I found for some reason the ohms jumped to 0.48ohms, and it has not seemed to reduce in ohms after a few uses. I'm not sure if I should be concerned or not? Or just leave it?
A wattage calculator recommended I should vape at around 36W, but I'm finding that a little too low and the vape not that great. I increased that to 42W's now, and it's a little bit better. Is this dangerous at all? Can I increase the wattage to higher at all?
Should I try a 5 wrap 4mm coil next time to lower the ohms?
Thanks.
For the 4mm coil I built I did 6 wraps and when I was installing it, it came out to around 0.36ohms, which might be a little high. Do I build the next coil with more wraps next time or less wraps to reduce the ohms?
However after I installed wicked and juiced it up, I found for some reason the ohms jumped to 0.48ohms, and it has not seemed to reduce in ohms after a few uses. I'm not sure if I should be concerned or not? Or just leave it?
A wattage calculator recommended I should vape at around 36W, but I'm finding that a little too low and the vape not that great. I increased that to 42W's now, and it's a little bit better. Is this dangerous at all? Can I increase the wattage to higher at all?
Should I try a 5 wrap 4mm coil next time to lower the ohms?
Thanks.
What mod do you have it on please.
What wire did you use.
I have gone as low as 0.15 dual coil on mine.
Also I don't think you need to be concerned. If you are confident there is no reason for a short, you will find the resistance will change from first install to when you prime the coil and then wick. A lot of us will pulse the coil to make sure there are no hot spots and then check the post screws in case they just need a nip to tighten.
42 w is nothing to be afraid of on a regulated device, but tell us what it is and we can maybe tell you the limits of that device.
What wire did you use.
I have gone as low as 0.15 dual coil on mine.
Also I don't think you need to be concerned. If you are confident there is no reason for a short, you will find the resistance will change from first install to when you prime the coil and then wick. A lot of us will pulse the coil to make sure there are no hot spots and then check the post screws in case they just need a nip to tighten.
42 w is nothing to be afraid of on a regulated device, but tell us what it is and we can maybe tell you the limits of that device.
Thanks.
I'm using it on a Wismec Reuleaux RX200 mod. 3x Samsung 30Q's.
Wotofo Framed Staple Clapton Wire - https://vaperscorner.co.za/product/wotofo-framed-staple-clapton-wire-2838928-36/
But I even put it on other mods and it seems to be staying at 0.48ohms.
I think I should have done 5 wraps instead of 6 wraps, though. It just looked so small in the hand. But first time building coils, so learning as I go.
I'm using it on a Wismec Reuleaux RX200 mod. 3x Samsung 30Q's.
Wotofo Framed Staple Clapton Wire - https://vaperscorner.co.za/product/wotofo-framed-staple-clapton-wire-2838928-36/
But I even put it on other mods and it seems to be staying at 0.48ohms.
I think I should have done 5 wraps instead of 6 wraps, though. It just looked so small in the hand. But first time building coils, so learning as I go.
My calculator (Vape Tool Pro for Android) says that it should be about 0.48 ohms based on the specs you gave.
0.4 if you build a 5 wrap 4mm ID with that wire.
I'd probably go with a 6 wrap 2.5mm ID dual coil build in the Blotto (though I dont own one) using that wire which should give you about 0.17 ohms.
Please let us know if you need any more assistance
Looking at the heat flux, you'll probably get quite a cool vape with that build I recommended... You would probably need to vape at around 110W on that build to get a decent warmth which sounds a bit high for the Blotto.
That wire may be better suited to single coil builds. I have a nickel sensitivity so can't use fancy coil wires but that Wotofo wire you have has a very low resistance so running dual coil builds with less than 0.15 ohm resistance is gonna be tricky on regulated mods and without decent batteries. I think 30Q 25R VTC5A etc. have a minimum safe resistance of 0.15 ohms. I may be wrong... Don't quote me
That wire may be better suited to single coil builds. I have a nickel sensitivity so can't use fancy coil wires but that Wotofo wire you have has a very low resistance so running dual coil builds with less than 0.15 ohm resistance is gonna be tricky on regulated mods and without decent batteries. I think 30Q 25R VTC5A etc. have a minimum safe resistance of 0.15 ohms. I may be wrong... Don't quote me
On a single coil:
More wraps = more resistance
Larger ID = more resistance
More metal = more resistance
Add another coil wire in parallel, dual, triple, quad etc. Then you would divide the single coil resistance by the number of coils.
Multi-coil builds:
More coils/metal = less resistance
More wraps = more resistance
Larger ID = more resistance
More metal = more resistance
Add another coil wire in parallel, dual, triple, quad etc. Then you would divide the single coil resistance by the number of coils.
Multi-coil builds:
More coils/metal = less resistance
Thanks for the help @takatatak Appreciate it.
I wanted to try a single 4mm coil, just to see how it performs. Maybe I can just take it apart and unwrap 1 or 2 of the wraps? Or is it not really recommended to do that? Should I rather just build a new coil?
Next time I'll build dual 2,5mm 6 wrap coils for the Blotto and see how it goes.
I wanted to try a single 4mm coil, just to see how it performs. Maybe I can just take it apart and unwrap 1 or 2 of the wraps? Or is it not really recommended to do that? Should I rather just build a new coil?
Next time I'll build dual 2,5mm 6 wrap coils for the Blotto and see how it goes.
I'd probably go with a 3 wrap if running a 4mm ID single coil with that wire and vape it between 35-65W. It might burn the cotton in the center if you chain vape though. I'd give that a go. You'll have to decide if it's easier to remove wraps or build a new coil... 6 of one, half a dozen of the other
What exactly is the problem though ? Is the vape not good. Nothing wrong with a .48 4mm coil in the Blotto, especially if you have the wicking down. I always get really good flavour from my Blotto, but sometimes get the wicking wrong and get leaks.
My preference is either a twisted comp wire or a parallel at around .25 for the pair, so aim at .5 for the single. The problem with multi wire coils in the Blotto is that they take up space and restrict the air flow on an already restricted air flow tank. So if your .48 single is doing the job, don't double guess it.
My preference is either a twisted comp wire or a parallel at around .25 for the pair, so aim at .5 for the single. The problem with multi wire coils in the Blotto is that they take up space and restrict the air flow on an already restricted air flow tank. So if your .48 single is doing the job, don't double guess it.
@Stranger I am finding the 0.48ohm 4mm coil might be too high resistance? And I'm concerned about increasing the wattage on the mod.
At the moment I'm vaping at 42W, but I find the vape really cool and the vape really minimal. Do you think I should increase the wattage? Or would it be dangerous?
I usually vape 0.23ohm dual coils at around 65W and 0.11ohm dual coils at 80W.
At the moment I'm vaping at 42W, but I find the vape really cool and the vape really minimal. Do you think I should increase the wattage? Or would it be dangerous?
I usually vape 0.23ohm dual coils at around 65W and 0.11ohm dual coils at 80W.
There's not nearly enough power running to that coil and it's working the batteries pretty hard...
Change to 3 wraps:
Way less voltage required to get the same output... Much better temperature. You could go up to 65W using less volts.
Awesome, thanks @takatatak I bump up the wattage to 67W and it's vaping better. Will play around with the wattage.
My concern was that I've never vaped a 0.48ohm coil before, and was not sure if the batteries or the mod would be safe to do so.
The one app I was using OHM Vaping advised when I put in the 0.48ohms that I should vape between 27W to 36.8W, so I was unsure. But maybe the app is for dual coils and not single.
My concern was that I've never vaped a 0.48ohm coil before, and was not sure if the batteries or the mod would be safe to do so.
The one app I was using OHM Vaping advised when I put in the 0.48ohms that I should vape between 27W to 36.8W, so I was unsure. But maybe the app is for dual coils and not single.
A single 0.48ohm coil depending on how the airflow is set and how warm you like your vape is good between 20 - 40w, 67w is far too high!
It is amperage you need to be concerned about when it comes to safety. If you look at the two screenshots above, you can see one that says 9.4 amps and the other that says 12.4 amps
If your battery is rated as 10 amps, the second setting will have your battery blowing up even though the figures say lower W and Ohms
Watts and amps are very different things and it is the amp rating that determines the safety. For example an 25R battery has an amp rating of 20 amps continuous discharge, which makes it safe for most mods and mechs.
A Sanyo 20700B is a bigger battery with a 4000mah rating .... but the amp rating is only 15 amps. So the myth is that if the battery is bigger in Mah it can deliver more amps. This is just not true.
I disagree with some of the above comments in that that the W do not determine the safety, the amps do.
However, you have a regulated mod which means that the mod should protect the batteries even if you abuse it.
Again I will say that you have no issue running that Blotto on a .48 build at a 100W if you want.
Think of those tiny MTL mods and pods that run at 1.6 Ohms on 1500 Mah batteries. They can do this because the amp draw is low even if it can go to 40W. Look at the screenshot below.
1.6 OHMs with a 1500 mah battery. If your coil is firing at 3.7 volts it is only drawing 2.31 amps.
@.48 = 7.71
@.25 = 14.8
@.15 = 24.67
If your battery is rated as 10 amps, the second setting will have your battery blowing up even though the figures say lower W and Ohms
Watts and amps are very different things and it is the amp rating that determines the safety. For example an 25R battery has an amp rating of 20 amps continuous discharge, which makes it safe for most mods and mechs.
A Sanyo 20700B is a bigger battery with a 4000mah rating .... but the amp rating is only 15 amps. So the myth is that if the battery is bigger in Mah it can deliver more amps. This is just not true.
I disagree with some of the above comments in that that the W do not determine the safety, the amps do.
However, you have a regulated mod which means that the mod should protect the batteries even if you abuse it.
Again I will say that you have no issue running that Blotto on a .48 build at a 100W if you want.
Think of those tiny MTL mods and pods that run at 1.6 Ohms on 1500 Mah batteries. They can do this because the amp draw is low even if it can go to 40W. Look at the screenshot below.
1.6 OHMs with a 1500 mah battery. If your coil is firing at 3.7 volts it is only drawing 2.31 amps.
@.48 = 7.71
@.25 = 14.8
@.15 = 24.67
I've been using a single 3.5mm ID Wotofo coil (dual core fused clapton - 26x2+36) in my Blotto. I have it sitting on a dual battery mod using the Samsung 25R 18650 batteries.
The coil comes out at about 0.45 (I think it's about 6 or 7 wraps) and I cannot complain about the vape at all. It's neither too hot, nor too cool for my liking and I get almost a full day's worth of use from the mod/batteries. I'm not sure if the amp draw is too high or too taxing on the batteries. @Stranger is way smarter that I am on this topic, so he might be able to say if my setup is taxing on the batteries. To the best of my knowledge, the first sign that you're taxing your batteries is usually that your batteries are heating up a little, but I've honestly never had any cause for concern as I've never experienced my batteries reaching a temperature higher than room temp.
The coil comes out at about 0.45 (I think it's about 6 or 7 wraps) and I cannot complain about the vape at all. It's neither too hot, nor too cool for my liking and I get almost a full day's worth of use from the mod/batteries. I'm not sure if the amp draw is too high or too taxing on the batteries. @Stranger is way smarter that I am on this topic, so he might be able to say if my setup is taxing on the batteries. To the best of my knowledge, the first sign that you're taxing your batteries is usually that your batteries are heating up a little, but I've honestly never had any cause for concern as I've never experienced my batteries reaching a temperature higher than room temp.
Fantastic comparison there. Very informative!
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