So I don't like doing long ones, but I have an interesting experiment I wanted to share that has given me some clarity and I think will help some folks here.
I got a couple new vapes recently so went several days without firing up my VB/OAB (for the first time since I got them - I should note I am VERY careful/delicate with my VBs during use and not, including the cord - like I take care not to let it move around too much near where it connects to the VB. Also, do I call then Vapos now??)
Was super excited to have a session session my OAB. I set it to11.2V, had a good session but noticed the hits weren't quite as big and the AVB was significantly lighter than usual. No bother.. I guess it has been a little colder this weekend? Turn it up to 11.8. Darker, but still not near as dark as it normally would be at this voltage. Whatevs, maybe a power supply issue - I've had one fail before, but this one was at least displaying everything normally.. I'll try my backup VVPS tmrw (today). This afternoon fired her up again with the new power supply with a good 1.5 hr soak to a stable 11.9V. I milked the bowl for every last drop, like until absolutely no vapor with the lightest draw possible. AVB was still very light.. Ok, somethings not right.. I looked inside the heater and everything looked normal and glowing.. heater nut is hot.. the heater coil is a little tilted to one side, but I think it's always been this way and im not a big believer that heater placement makes a big difference in performance, if really at all. I wasn't going to stick anything in there to try to try move it (especially while on), but I noticed there was a little give to the cord so I very delicately pulled the cord out a little bit (maybe 1/2 to 1cm) and noticed the heater centered up and went back up into the heater (further away from the herb) the same length that I pulled it. Aight.. let's see.. I put the same bowl on that I had just milked. BOOM. Huge hit, nearly combusted. OK... I'm on to something here.
Repeated the experiment exactly. First time with the heater in original (tilted) position 11.9V. Milk it till nothing comes out. Then take a few hits with the same bowl with new heater position (cord pulled out slightly).
Here's the pics of the heater before and after, as well as the AVB before and after:
The third pic is a another bowl I did at 11.6V with the new heater position. The pic doesn't do justice to how done that bowl is - it was BLACK. Like I will def be turning down the voltage more.
My Theory:
While the heater tilt vs centering makes some difference, the big thing I think is how 'far back' the heating element is. The further back it is, the closer it is to the hole that the air passes through, minimizing the gap between that hole and the heating element - effectively forcing the air to pass closer to the heater, making it hotter.
I should add that, even with the reduced heat, the experience was still great, I just see now there is definitely a lot of wasted thermal energy if the heater isn't 'tuned' correctly (i.e. if the heater is placed optimally you can get the same or better outcome at lower voltages).
I should also note that my VB/OAB were both made by
@Jaxel . I totally believe they test and tune all their devices and mine are among my most treasured possessions. I think what might be happening is that, for
some units, during shipping the pressure from the packaging/bubble wrap maybe pushes the cord a bit to either untune it slightly, or 'loosen the tune' so the heating element is more susceptible to movement as the cord moves.
I have pulled the cord out to where it's pretty snugly in the 'new' position, not using too much force, and it is running beautifully (now at lower voltages - still experimenting).
I am not completely confident that my theory above is true, but I am 100% sure that heater placement as I describe makes a considerable difference (which, again, is contrary to my original belief). I took great care to make sure the oven nut was completely sealed each hit so that wouldn't be a variable.
I am also not suggesting people start fiddling with their VB heaters, or tugging on their cords, especially if they are getting the results they want with it - but if you find you are having to go 12V+ to get darker AVB, this info might help you, but you might want to get a 2nd opinion from the makers themselves before messing with anything like I did!
Love you guys
@Jaxel - looking forward to what the future holds for you and the team!