First Genesis-style RBA, Wow!

[Glenn_K]

Greetings; I've been wanting to try a Genesis-style rba, and the Siam Cobra that I bought arrived two days ago. This vapor and flavor from this thing is off the charts.

I picked the Cobra because it came thru a good classifieds deal. I wanted something half decent, without spending a lot of money (wasn't sure if I would like gennies). The seller did a build for me, which saved a lot of grief, because it would be hard doing my first genny wick/coil from scratch. Now that I see how this thing works, it should be easier.

I'm getting occasional dry hits, and I think that I need to adjust the coil (i.e. hotspots), but I've been afraid the adjustment might mess up the build entirely. I don't want to have to stop using this rba while figuring out how to do a new wick/coil (it would suck to have to switch back to a clearo, even for a couple days). The flavor just explodes off this thing, and the vapor is so rich that i'm seriously thinking of switching to a lower nic juice.

-- Glenn

 

[Glenn_K]

I've got a question about adjusting hotspots, which I mentioned in the above post.

The build done on my Cobra is about 1.0 oHms (it varies from around 1.1 to 0.9 oHms), so I can't fire it up on a regulated mod for the purpose of adjusting coils. Do people do these sorts of adjustments on a mech mod? I'm wondering whether it's not smart to be firing a mech mod long enough to do these sorts of procedures.

I noticed on one of the Zen demo vids, he was reaching the cutoff time on a Provari, while adjusting coils. Is this amount of time too long for a mech mod?

-- Glenn

 

[steel bender]

It can be done on a regulated mod, provided the resistance isn't too low that you're regulated mod won't fire it. The cutoff is usually around 1.2 ohms. I would say it's easier done on a mech because it won't shut off if you're working out a short, or using the pulse method to oxidize your mesh. As far as the amount of time for firing, you just don't want to let the coil get too bright (hot), because if you're not careful, it can be easy to pop a coil and have to start all over.

 

[WattWick]

I usually adjust mine with 2-5 second pulses on a mech. Part because I don't want to burn holes in my mesh, part because I don't want to heat up the atty so much it can melt insulators and such. Usually it shouldn't take too much prodding and poking to fix hotspots. If it does, your coil might be too tightly wrapped. Most of the time, I get a hotspot where the topmost coil makes first contact with the wick. I try to simply pulse through these with short 1-2 second pulses, maybe less. If that doesn't work, I prod a little.

More often than not, it's enough to just pulse and watch the red heat work its way down the coil... with the occasional prod if it stops anywhere.

 

[Glenn_K]

Thanks for the advice, this should really help.

-- Glenn

I usually adjust mine with 2-5 second pulses on a mech. Part because I don't want to burn holes in my mesh, part because I don't want to heat up the atty so much it can melt insulators and such. Usually it shouldn't take too much prodding and poking to fix hotspots. If it does, your coil might be too tightly wrapped. Most of the time, I get a hotspot where the topmost coil makes first contact with the wick. I try to simply pulse through these with short 1-2 second pulses, maybe less. If that doesn't work, I prod a little.

More often than not, it's enough to just pulse and watch the red heat work its way down the coil... with the occasional prod if it stops anywhere.