1. For efficiency the Alpha Centauri is superior since you can easily control your load size by only putting a small amount of extract inside. The Hercules makes it very easy to take Herculean rips which'll throw efficiency right out the window. It is possible to use low power settings and short pulses of power to get wispy vapor if you wish, but IMHO might as well just use a 1701 ceramic donut if that's what you're after.
2. Yes, start low and work your way up. 10-13 watts is the maximum with ~5 second pulses of power. Higher power levels merit shorter pulses of power to prevent overheating.
3. With the full Alpha Centauri kit you do not need to choose since all 3 heaters are included. I'd say that the dual coil is by far the fan favorite, and the 1701 is a contender for terp hunters
. Single coils best advantage is for those who want to be as efficient as possible, other wise the dual coil provides twice the wicking and twice the heating wire to double vapor output for a given temperature.
1. We sell replacement heating elements for the Alpha Centauri and do not provide any support for rebuilding these coils. However, we don't put any solder, glue, or cast-in plastic to prevent you from disassembling and rebuilding these coils if you are an experienced coil builder and wish to do so. You may find the Gen 3 Kiss cart, AC dual coil, or AC 1701 to be to your liking as far as housings go... If you use titanium wire, you'll need to use crimps to attach the resistor coil to non-resistance leads. Pay attention to how the cart is built when you put it back together. The 1701 uses a donut wick (passive) on top of a ceramic donut heater. You rebuild the 1701 by exchanging the ceramic heating element:
but some choose to wrap a wire coil.
2. Nope, you won't burn out the Hercules ceramic rod with long pulses of power, but pulsing is still helpful when used on VW mods so they can send power appropriately as the resistance of the rod changes, and it also allows you to regulate the temperature.