I've been experimenting with different builds lately to try and get a good vape from lower wattage, specifically the 40-70 watt range. I've made an interesting observation with my latest build that got me thinking. Now, I'm focusing on two variables here that seem(to me) would have the greatest discernible impact on battery life, specifically in TC where wattage is dialed back once the target temperature is achieved. Before I get too far into this I want to say that I haven't tested the build variations necessary to draw any real conclusions from this, and I probably won't. I was just vaping on one of these builds at work tonight, had an interesting thought, figured I'd share it.
The two builds I'm comparing are both standard dual core fused claptons @ 2.5mm ID. One is 8 wraps 28g ss430 wrapped with 36g 316L, the other is 6 wraps 28g 316L wrapped with 38g 316L. I've run both builds in a Moonshot 24 on a Hohm Wrecker G2 with Samsung 25Rs. Interestingly, I get noticeably better battery life at the same perceptible(I'll explain) temperature from the larger of the two builds.
By perceptible temperature I mean the temperature of the vapor, not the coils themselves. I'm admittedly not super educated so forgive me if my terminology is off here, but a larger mass at a lower temperature will radiate more heat than a smaller mass at a higher temperature. This is one possible explanation for the results, since the larger coil doesn't need to be as hot as the smaller one in order for the vape to feel as hot. For example, I'm running the eight wrap coil at around 400F and 120 watts(overkill, I know, but instant ramp up from a cold coil), and the six wrap coil at around 500F and 80 watts.
Another explanation is the wrap wire. Thinner wire will take less time to heat and cool, so while the thicker of the two will require more power to reach the desired temperature on the first vape, it should require less on frequent subsequent vapes since it won't drop in temperature as much as the thinner one. With the fairly small difference between 36 and 38 gauge I don't know how much effect this will actually have, but it's worth thinking about.
Lastly, metals used. I don't think the small difference between 430 and 316L would have much of an impact on battery life, but it's still a variable. The larger coil, which I got better battery life from, had SS430 cores, while the smaller one had SS316L cores. Both had 316L wraps, just different gauges. Could that have a greater impact on battery efficiency than I think?
I'm not looking for any answers really, if I was that curious I'd do some testing. I was just expecting better battery life from a smaller build at lower preheat wattage and ended up seeing the opposite.
The two builds I'm comparing are both standard dual core fused claptons @ 2.5mm ID. One is 8 wraps 28g ss430 wrapped with 36g 316L, the other is 6 wraps 28g 316L wrapped with 38g 316L. I've run both builds in a Moonshot 24 on a Hohm Wrecker G2 with Samsung 25Rs. Interestingly, I get noticeably better battery life at the same perceptible(I'll explain) temperature from the larger of the two builds.
By perceptible temperature I mean the temperature of the vapor, not the coils themselves. I'm admittedly not super educated so forgive me if my terminology is off here, but a larger mass at a lower temperature will radiate more heat than a smaller mass at a higher temperature. This is one possible explanation for the results, since the larger coil doesn't need to be as hot as the smaller one in order for the vape to feel as hot. For example, I'm running the eight wrap coil at around 400F and 120 watts(overkill, I know, but instant ramp up from a cold coil), and the six wrap coil at around 500F and 80 watts.
Another explanation is the wrap wire. Thinner wire will take less time to heat and cool, so while the thicker of the two will require more power to reach the desired temperature on the first vape, it should require less on frequent subsequent vapes since it won't drop in temperature as much as the thinner one. With the fairly small difference between 36 and 38 gauge I don't know how much effect this will actually have, but it's worth thinking about.
Lastly, metals used. I don't think the small difference between 430 and 316L would have much of an impact on battery life, but it's still a variable. The larger coil, which I got better battery life from, had SS430 cores, while the smaller one had SS316L cores. Both had 316L wraps, just different gauges. Could that have a greater impact on battery efficiency than I think?
I'm not looking for any answers really, if I was that curious I'd do some testing. I was just expecting better battery life from a smaller build at lower preheat wattage and ended up seeing the opposite.
