1 VOLT drop on The Natural + AGA-S/T/RSST

[dhomes]

Hi guys, I'm just playing with my first rebuildable. I went with a Natural to see if I like Mechs above VV / VW

I do however have built three wood boxes with electrical switches and see similar behavior, which I thought was a limitation of the switch (2.5 amp AT 125 V, it's a heavy duty screw-in-wires ~no soldering~ switch for thick wires). On the boxes I'm using (i think) gauge 20 electrical wires (I cut the wires off an old PC power supply, they are supposed to handle 15Amps @ 12 volts or 16Amps @ 3.3 Volts)

Back to the Natural, so I take a Panasonic CGR18650CH off the charger, measure the volts directly on its terminals: 4.15 Volts

Put it inside the Natural and measure off load, at the 510 connection: 4.15 volts exactly

Attach a few RBAs, AGA-T, RSST, AGA-S and see a HUGE drop when I measure it at its posts: 3.13 volts

the load is a sub-.8 ohms coil (dont know exactly as my EXTECH Voltimeter somehow does not want to measure resistance anymore, but works fine with voltage). I say sub-.8 volts as that is the minimum resistance I know my provari can measure, anything below and it throws a LO

The wick is an ~initially~ unoxidized 1/8" thick (3.1 mm) built from 140 mm mesh

3 wraps of kanthal 28 on it spaced about 1.5 to 2 mm each

Why do i see such a HUGE drop? I'm a noob to mech / SLR coils

Is it because of the battery? these have a 10 C rating, same as the IMR, do you all guys on mechs are only using MNKE with its 20 C rating?

If so, any place outside of AvidVaper selling them?

your input is appreciated!

 

[Kemosabe]

ive seen MNKE batts at RTD Vapor.

...this voltage drop has me wondering if ive got the same thing going on with my mech (CCTS). but i do have a kick in mine, im thinking the kick will adjust for the drop and pump out what im plugging in. sure seems like it.

edit for link: Batteries : MNKE IMR 18650

 

[Plumes.91]

idk man. the natural does have a pretty big drop. ive seen them measuring .3 and .6 for drops.
definitely might want to consider sanding the posts though. hope someone can help further.

 

[dhomes]

thanks Kemo, much appreciated! much better price than Avid's

 

[dhomes]

Plumes, but I measure, off load, the same voltage at the at the batteries terminals & the Natural 510 connector, this is using a volimeter where you are just touching these terminals. Once you screw in your 510 connection tight it should have a much more efficient path for electricity to pass through, right?

I see pretty much the same drop on the wood boxes I have with heavy-duty electrical switches. .9 to 1 V drop.

When you say sand the posts I assume the ones on the natural (which I already did), NOT the RBAs, right?

 

[Rule62]

The positive and negative post screws in the Natural are chrome plated brass, as is the bottom post and switch post. After completely disassembling the device, a few swipes with some sandpaper will expose the brass. Also, the bottom post is adjustable, by turning the plastic piece that supports the post. You can do this with a pair of needle tip tweezers. Catch the tweezers in two opposite holes in the plastic piece. You want to feel the positive and negative posts tightening against the battery, when you tighten the outer tube on the mod.

 

[dhomes]

Hey rule, thanks for the info, will try after lunch and post results!

 

[aPandaz]

Check the threading on your tubes to make sure they are clean.

 

[dhomes]

Pandaz, it's brand new but will definitely do!

 

[dhomes]

Rule, did all you mentioned, also sandpapered a bit of the positive bottom post of one of the AGAs, now under load the loss is .6 ~ .7 V. an improvement but still a bit high. no?

anyone has a recommendation for a cheapo / begineer mechanical in the lines of the Natural but with a lower loss? (any of the Sigelei? maybe the GGTS chinese clone?)

 

[Rule62]

Rule, did all you mentioned, also sandpapered a bit of the positive bottom post of one of the AGAs, now under load the loss is .6 ~ .7 V. an improvement but still a bit high. no?

anyone has a recommendation for a cheapo / begineer mechanical in the lines of the Natural but with a lower loss? (any of the Sigelei? maybe the GGTS chinese clone?)

I have a Sigelei #13. I've never checked the loss. But it hits very well. It's a telescope with brass contacts. Bear in mind, you're always going to get some loss, even with high end mechanicals.

 

[dhomes]

Rule, I do get the drop under load, it's just that .6 ~ .7 still seems too high, where did you get the sigelei 13 from?

 

[Rule62]

Rule, I do get the drop under load, it's just that .6 ~ .7 still seems too high, where did you get the sigelei 13 from?

This is the one I have. Nice mech mod, for the price.
Sigelei Stainless Telescopic Mod

 

[jasl90]

You have to keep in mind that a mechanical device doesn't have a set voltage drop. It does, however, have resistance, just like every everything else in the universe.
It's the resistance or the PV in series with the resistance or the atomizer that reveals a voltage drop... (Plus you need to account for the battery's internal resistance).

Rather than go into detail myself, here's a link to an excellent article on the topic... Voltage Drop - Not Where You Think | atmizoo vaping modware