Build Suggestions for 21700 Samsung 30T

[RawrRomp]

Recently got my first Mech, The Dreamer (Stainless Steel). Have been using Samsung 21700 30Ts on them and feel a little underwhelmed about performance. I understand ohms law and did a lot of homework before buying my first mech. Just looking for ideas for next build. What are some of your builds on this battery / similar battery.

Current Build:
Reload X, Dual Tri-Core fused Clapton SS316L 28x3 / 36. ~.12

 

[Spey]

"underwhelmed about performance"

Sounds like ya got too much wire there. Reduce the mass a little and performance should increase.

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[sonicbomb]

Like Spey said. The 30T is great battery that gives you extra headroom over an 18650, but at the end of the day it's still just a single battery with a maximum voltage of 4.2 volts. A tri-core clapton contains a LOT of metal which is going to need a lot of power to bring up to heat.

I would suggest bringing right back to basics with a simple roundwire build and then go from there.
The 30T is a true 35 amp CDR battery as tested by Mooch.
Bench Retest Results: Samsung 30T 21700...an incredible 35A 3000mAh battery!

Try this build
Coil wrapping | Steam Engine | free vaping calculators

 

[r055co]

Agree with too much wire mass, I use 317L SS fused claptons around 28x2/38.

 

[RawrRomp]

Thanks! Shall try both these builds

 

[Spey]

You may also want to experiment with single coil build options. This 3.5mm S/S build is fairly thrifty (great vape with good battery life and relatively short ramp-up time). Staggered Fused Clapton with Parallel Twisted Wire.

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[dripster]

Try all Ni80 instead of all SS316L, but with 27g instead of 28g, and 4.5 wraps at 3mm ID. Dual coil it will be about the same resistance as what you have now (~.12 ohms), and, the wire will be slightly thicker (27g), but there will be one less wrap to heat up (4.5) and also Ni80 heats up a little faster than SS316L so tri-core fused claptons (or tri-core staggered fused claptons, or tri-core aliens,...) should get you close to where you want to be.

 

[Outcast]

I have a buddy that makes 99.9 pure silver contacts for the dreamer that helps with ramp up but out side of that ur throwing to much mass into ur coil like others of said have you ever played with n90 .12ohm is your max on that cell so u cud try a 26ga n90 parallel build dual coil


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[Outcast]

Just got a 21700 cell mech my self shod have this week from the Philippines got this full setup and stacked 21700

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[entropy1049]

That’s a heck of a nice rig.

 

[r055co]

Try all Ni80 instead of all SS316L, but with 27g instead of 28g, and 4.5 wraps at 3mm ID. Dual coil it will be about the same resistance as what you have now (~.12 ohms), and, the wire will be slightly thicker (27g), but there will be one less wrap to heat up (4.5) and also Ni80 heats up a little faster than SS316L so tri-core fused claptons (or tri-core staggered fused claptons, or tri-core aliens,...) should get you close to where you want to be.

SS is lower resistance than NiChrome thus faster ramp up.

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[dripster]

SS is lower resistance than NiChrome thus faster ramp up.

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Sure, but I think we can assume the goal is also to not let the resistance become too low (4.2V/.12ohms=35A, the CDR of the 30T) so by using one less wrap in cohort with slightly increased thickness of the core wires, the resistance will go down, but by moving from SS to Ni80 we effectively compensate for this lowered resistance so that the target resistance will still be met, but the coil build will ramp up faster because there will be less metal to heat up, and, Ni80 has a lower volumetric heat capacity than SS, so, as a direct result from that, this faster ramp up will be even faster still.

 

[r055co]

Sure, but I think we can assume the goal is also to not let the resistance become too low (4.2V/.12ohms=35A, the CDR of the 30T) so by using one less wrap in cohort with slightly increased thickness of the core wires, the resistance will go down, but by moving from SS to Ni80 we effectively compensate for this lowered resistance so that the target resistance will still be met, but the coil build will ramp up faster because there will be less metal to heat up, and, Ni80 has a lower volumetric heat capacity than SS, so, as a direct result from that, this faster ramp up will be even faster still.

For the the lower resistance you would adjust by using higher gauge, then again adding increased performance (quicker ramp up and cooling).

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[Spey]

... feel a little underwhelmed about performance ...
Current Build:
Reload X, Dual Tri-Core fused Clapton SS316L 28x3 / 36. ~.12

"underwhelmed about performance"
Sounds like ya got too much wire there. Reduce the mass a little and performance should increase.

... adding increased performance (quicker ramp up and cooling).

I think the key here is understanding what the OP considers "feel a little underwhelmed about performance". Additionally, it seemed to me he was asking about S/S wire options as he has/chose this in OP.

r005co,
YES, to me also, "quicker ramp up and cooling" = increased performance.

So, most simply reduce the mass (eliminate a core, reduce the wire guage aka higher AWG #, convert to single coil), keeping other variables like O.A. resistance similar.

 

[dripster]

For the the lower resistance you would adjust by using higher gauge, then again adding increased performance (quicker ramp up and cooling).

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Only problem, the OP is already using SS so if he decides to use higher gauge for his core wires like you suggest, then the resistance will go up, not down.

 

[r055co]

Only problem, the OP is already using SS so if he decides to use higher gauge for his core wires like you suggest, then the resistance will go up, not down.

Wire mass

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[dripster]

Wire mass

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Resistance

 

[r055co]

Resistance

It's a balancing act, especially with Mech's.



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[r055co]

My go to build is dual 28x2/38 SS fused Claptons around 0.15. Very responsive and a nice warm dense Vape. Sometimes I'll spin up 30x2/40 for around 0.3 for my 22mm attys.

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[dripster]

My go to build is dual 28x2/38 SS fused Claptons around 0.15. Very responsive and a nice warm dense Vape. Sometimes I'll spin up 30x2/40 for around 0.3 for my 22mm attys.

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But a moment ago you said SS has lower resistance than Ni80 and that is what causes SS to ramp up faster. OP is already using SS so the resistance can't be lowered that way, which is why increasing the gauge of the core wires will do the opposite of lower resistance, and, the fact you talk about 0.15 ohms whereas the OP talks about 0.12 ohms only validates my point.