So I rebuilt my V-core2.0 aka squid tank twice and going to do it a third time today but my issue is I seem to have to set my variable voltage mod to 3.7V I'm doing a 5/4 wrap of 32 gauge kanthal on silica wick. The original factory unit I use at 3.0-3.2 with a good amount of smoke and throat hit, with my new set up I get ok smoke and ok throat hit. Any ideas? I saw some one braiding wire on youtube I was wondering if I should do the same. I want to get the big smoke that everyone else on youtube gets with good throat hit.
Any ideas what I'm doing wrong
- Thread starter Juan H.
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What you're doing wrong is not using a multi-meter and measuring the ohms. Or you PV should tell you the ohms if it has that option.
You need a multimeter. Counting wraps only goes so far. We need actual #'s.
Otherwise, it could be a wicking issue. Wrapping too tight chokes the wicking, reducing the vaporization. TH is a function of nic level and heat.
You need a multimeter. Counting wraps only goes so far. We need actual #'s.
Otherwise, it could be a wicking issue. Wrapping too tight chokes the wicking, reducing the vaporization. TH is a function of nic level and heat.
ok just did a wrap 4/5 and my MM is reading 4.1 ohms. I read people are getting 1.2 ohms am I making the wrap too lose?
Depends on the voltage. Watts = voltage squared divided by ohms. That will give you a ball-park "heat" figure. It varies by coil gauge too.
But 3.7 x 3.7 / 4.1 = 3.339 watts. Pretty cool. Even cranking that up to max volts is probably too cool.
So yeah...too many wraps, or too lose. Also, check for other resistance ...like oxidized/gunked threads on connections.
Most people want around 2.0 ohms for 3.7 volts, for example. Or I vaped a long time at 5 volts with around 3.0 ohms.
But 3.7 x 3.7 / 4.1 = 3.339 watts. Pretty cool. Even cranking that up to max volts is probably too cool.
So yeah...too many wraps, or too lose. Also, check for other resistance ...like oxidized/gunked threads on connections.
Most people want around 2.0 ohms for 3.7 volts, for example. Or I vaped a long time at 5 volts with around 3.0 ohms.
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P.S. If you didn't already, you may need to subtract out the resistance of the MM leads.....depends on the leads and the MM.
Attypops Thanks for all the advice I was able to get a tighter wrap and got 3.3 ohms yesterday and now I'm vaping at 3.4V but I get a little after taste. I do have a few more questions for you though. 1. if I heat up wire and wick should I do them separately or is it ok to do together and 2. how do I figure out what my leads are adding to the equation? thanks again
To find the internal resistance of your multimeter, just hold the 2 leads together. Whatever number is on the screen, subtract that from the resistance reading your getting from your v-core. If your at 3.3 ohms, crank your pv up to at least 5 volts, and give that a try. The more ohms you have, the more voltage you have to throw at it
May be another Factor - Other RBA Devices also suffer this from time to time.
Any and ALL connecting points are possible Resistance changers. Base, threaded center pipe BOTH ends, center pin threading,Nuts/thumbscrews, etc.
ALL these components MUST be spotless clean and making excellent contact with each other.
Each weak point equals an increase in resistance.
A simple way to Verify is to read you coil - end point to end point. Then Read outer(510) to center contact resistance and compare.
AGA-T is a good one for increasing Resistance and robbing power if not careful with build.
Any and ALL connecting points are possible Resistance changers. Base, threaded center pipe BOTH ends, center pin threading,Nuts/thumbscrews, etc.
ALL these components MUST be spotless clean and making excellent contact with each other.
Each weak point equals an increase in resistance.
A simple way to Verify is to read you coil - end point to end point. Then Read outer(510) to center contact resistance and compare.
AGA-T is a good one for increasing Resistance and robbing power if not careful with build.
For a coil on silica wick...I just wrap it and connect it and heat it on the PV. If you think it's particularly oily...you could rinse it I guess. But the "build up carbon" thing is for mesh wicks. Some do heat the coil wire to make it more agreeable, but I haven't found it to be particularly necessary.
Make sure you don't have a short before you connect it up and heat it.
YMMV.
Make sure you don't have a short before you connect it up and heat it.
YMMV.
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