RSST on mech or VV/VW

[Hobojo]

So I just picked up a smok RSST and a buddy helped me build a .9 ohm stainless steel mesh (325) coil for it.
I'm using a nice, light 50/50 Black Cloud Vanilla Custard e-juice, and AW 18650's (sometimes 18490's)

Using the genny on a provari mini I get "E1"...I'm assuming the provari doesn't like .9 ohms. Doesn't fire.
On an Innokin 134, I have to crank it up around 12 watts to get pretty decent vapor....10 or less is meh.

On my Sigelei 20 and MKB-TS the RSST is a cloooud machine.

Any insight as to why? Other than draining batteries, and not firing on the provari, do I need to worry about anything else in regards to the .9 ohm coil?

I would post in rebuildables, but I do too much lurking and not enough posting, so New Members Forum it is

 

[Raycecar]

It doesn't fire on the Provari because it has protection. I believe to fire on a Provari it'd need to be around 1.2ohms.

 

[patrao_n]

What voltage is the provari at?

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[patrao_n]

You might have to take the voltage on the provari down to 3.6 or less to fire it. But it will fire provided there isnt a short

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[Plumes.91]

mmmmyes, VV and VW mods have amp/watt limits. The Provari likes around 1.2 ohms at 3.6 or 3.7v. I believe it can handle around 1ohm at 3 volts? Mechanical mods don't have amperage limits, the operate strait from the battery. The battery isn't told "hey, that amp draw is too high for you" and the battery doesn't say "hey, I'm feeling woozy" so you can use a sub ohm coil with a mechanical mod without an error message. But you have to be careful. You have to use an ohm meter ALWAYS and you need to be careful not to overdrain your battery. If you use too low a coil you can short your mod or the battery itself which will either destroy the mod or the hotspring, or the battery. If the battery vents, it can burn you or mess up ur face. Mechanical mods have no protection. Meter is needed. 0.9ohms is alright but be aware that the battery will stress out as you drain it. So always be aware of the vapor drop off and change out the battery immediately.

 

[Hobojo]

You might have to take the voltage on the provari down to 3.6 or less to fire it. But it will fire provided there isnt a short

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That was one of my problems. I was vaping around 4.0 volts with my tatroe earlier, didn't even think to try lowering the voltage after I got the error code. I also believe I only had an 18490 in.

I popped on my tatroe ring, extended cap, and an 18650. I also realized I had to tighten down the tall screw on the RSST to make sure the center pin was making contact.

Now its firing fine even at 4.0 Volts. Is that safe? Am I foolish to assume it is since the provari is "protected" and should shut off if it wasn't?

 

[Texasman2011]

you can damage the board in any regulated VV/VW device, they don't like the sub OHMS. it would be best if you rebuilt the RSST to atleast a 1.2 or higher. but like i said you should only use the sub OHM on the mech device

 

[Hobojo]

Right after the coil was built a vamo said it registered at .9 ohms.
Fast Forward ~8 hours...I just used the provari to read ohms again and I got 1.2 3 times in a row.

Why the change? vamo innacurate? So I should be good to go on anything, yeah?

I don't have the vamo, and nothing other than a provari to check ohms currently.

 

[Texasman2011]

The vamo is very acurate as far as Ohms goes. there is always the rule of +.2/-.2, be careful of using it on the provari

 

[Hobojo]

I'm not trying to start a vamo v provari thread or light any fires...

Just wondering if that seems odd or normal?
Vamo - .9 ohm right after building
Provari - 1.2 ohm ~8 hours later

The RSST coil should be constant regardless of device, no?
So either the vamo was innacurate, the provari was, or the coil's ohm reading changed due to another factor (post being moved up and down, or change after time?)

I'll probably just stick to the mech, but curiosity has got me now haha

 

[Texasman2011]

I understand about the vamo vs provari.. you aren't lighting any fires. there is always going to be a difference as far as ohms goes. the ohms will always change and you wont notice it all the time. one time that you will check it, it will say that you are running .9 and the other time it might say that you are running 1.2 it definitely will change. as long as it fires on the provari you shouldn't have any problems with it. i built my AGA-T2 and it came up with 1.5 and it will fire, but there are times that it will run below 1.0 ohm and i get the error so it wont fire.

 

[BoratNJ]

I had exactly same story, built 0.9 ohm coil for Kayfun and Provari didn't fire until I lowered the voltage. Provari max current is 3.5 amps, so it makes sense that it didn't fire until you lowered voltage below 3.5v. Now, for resistance going up after few hours of vaping - maybe you had two windings of a coil in contact with each other but then they got apart ( possibly because of wick expanding? ). That would increase the resistance. I still prefer to use Kayfun on a mech though, it just feels right. Oh, and Tatroe tanks rock!

 

[Thrasher]

several people are on it. a mesh wick will release all of the shorts after it has seasoned with a nice coating as well as general expansion.
also the wire depending on the type and diameter will stretch and change under heavy thermal load. i have coils in my kayfun read a couple points higher after a few weeks of heavy pounding.I have gotton 1 ohm loads to fire on the provari but i think it was like 2.9v? been awhile. but it really does like higher resistance and there is no real reason to run lower ohm setups on a regulated mod.

for the provari i run the same attys with 30 or 32 g wire in the 1.5 to 2.0 range. and still get excellent results