Very nicely done.... I've thought about twisting up some 22 or 24 ga I have but have been over thinking the heat up time...
How slow is the ramp up?
Thanks,
Geo
Slick coil, z.
I'm interested in heat lag, too. I twist up 28 and 27g from time to time for particular atties - Danny's pen twist technique has saved me a ton of time and effort.
With my VTC4's in the raw Grand pictured above it's damn near immediate. You have to take into account the 0.14Ω resistance, though, obviously. The same twist built at, let's say, 0.22Ω is going to be a lot slower. On this build, with saturated cotton in place, the delay from button press to
vaporization of liquid is virtually non-existent, though without the cotton it takes about a second for the
coils to get white hot.
I did make a similar build (same ID, same wraps) with (4) strands of 28G instead of (2) strands of 24G, and that went from cold to white hot immediately. Also metered around 0.14Ω. I didn't like it though, as I couldn't take a nice long pull. You know us lung burners. If you're comfortable
vaping around 0.30Ω, I'd recommend twisted (2 strands) 28G, or for .22Ω or so, twisted 26G.
Use
this calculator to avoid throwing away wire. It is, in my opinion, the best one available. Under "Material and Profile" choose "Round, twisted/parallel," and under twist pitch, which is the distance between ridges on the twisted wire, add about 0.3mm to the diameter of the wire, which is listed below that (just as a general rule; you can tighten the twist as much as you'd like). Tighter twist = less twist pitch, looser twist = more twist pitch. Then just type in your target resistance and watch the numbers fly.
More wraps are going to heat up slower, higher gauge wire is going to heat up quicker.
Good luck.
Rob was kind enough to drill the post holes on the last one I ordered but I have a Vertex coming soon.
