I currently own a Bonza rda with a ijoy captain pd270 and I've been looking at getting a mechanical tube mod to match it. I'm current have it running 2 alien coils from Cloud Revolutions that run at 0.11 ohms. I've been looking to match it with a Broadside tube mod but when I've done the ohm's law calculations, my coils will need 38 amps and I'm not aware of any 18650 capable of that. And when i watch the Vaping Bogan's video on his Danesa 2 video, he's using the same coils on a single battery so I'm not sure whats going on. Am I doing my calculations wrong or am I missing something.
My planned setup is a Bonza rda with dual alien coils at 0.11 ohms in a Broadside mod with a Sony VTC5A.
First thing remember.. a regulated mod is not a mechanical mod. Regulated mods handle watts differently and have numerous fail safes to make them less dangerous. NO mod is "SAFE". You do what you can to make them as safe as possible. Luckily, the VTC5A has a 25A Continuous Discharge Rate (the amount of current you can draw without overheating and damaging the battery. You can use ohms law calculator to stay at or below the cells CDR.
http://www.steam-engine.org/ohm.html
you can use this coil building tool to preplan your coils and even virtually fire them by looking at the heat flux mw/mm2 Vaping should be 280 to 400 the higher the number the warmer the vape.
http://www.steam-engine.org/coil.html?p=roundmulti&s=dp&r=0.18&hf=300&str=2&awg=26&id=2.26
Please, look this build over very well and use ohms law before you consider using it. I don't like showing coil builds for mech users. YOU have to decide if you want to vape it, so you should look it over. I used a build for dual core claptons, dual coil. I know that build will be below your 25A CDR or I wouldn't have linked it. (triple checked)
The build in that link runs at or below 25A. Keep in mind, this will not be the same for every cell. A 20A cell for example... this build would be a bit high.
Now the first thing you need to know, is that a mechanical mod has only 1 variable that you can adjust, and adjusting that variable changes a lot of factors. The first factor is that the resistance of your coil totally controls the Amps drawn from your battery. Use the ohms law calculator to demonstrate using various resistances. I'm not really sure what Carambrda meant by the cell will not reach above 33A, since Mooch has stress tested them up to 70A. (way way way above CDR and well out of the recommended 25A CDR of the battery)
**Stress testing is using a cell well above it's CDR to determine how fast the cell heats up, how much damage is done to the cell, and is done in controlled conditions. Mooch is a PROFESSIONAL. He does testing for various companies not vape related, but also free of charge for the vaping community. In other words, just because Mooch tested these cells in his workshop with his equipment, doesn't mean YOU should try this at home.**
Personally, I would keep your resistance at or above 0.18 until you become comfortable. The cell will allow you to go lower, even 0.15 wouldnt be to bad. As Carambrda said, they vape the cell at 0.11 ohm, which is still within limits, but work your way down to that while you get used to mechanical mods. Remember.. the lower your resistance, the higher the amp draw and the less time you have if something goes wrong (such as a stuck fire button) Also keep in mind not all atomizers are usable with mech mods, mainly if the center pin does not protrude far enough to contact the +cap on battery without letting the negative threading touch as well. Make sure your tube mod has adequate ventilation as well. A venting battery can blow up a poorly vented mod.
Quite frankly, you will probably prefer the vape you get from your existing, regulated mod, and the mech will end up sitting in a box. Really the only reason to have a mechanical mod now, is for mech class cloud competitions, which are advanced builds. You would be better off spending your money on some nice shiny new atomizers. Tsunami, TwistedMesses, MutationX V4 are my fav RDA and I have an Ijoy RDTA combo which is pretty neat. Basically, Mechanical mods in general are not for new to intermediate vapers and require advanced knowledge to maximize safe usage. I am trying to stress this a fair bit, because the question you asked in your post is information you should already know without having to ask when using an advanced vaping mod. Basically... if you were going to put a gun in your mouth, would you trust my word that there was no bullet in it....or would you make damn good and sure there wasn't, for yourself? Don't take any offense to this, none is intended. This is stuff I had to be told, then research and now I'm passing it on.