After running this mod exclusively for a few days now, I have some thoughts I'd like to share - but I'm not up for a full review (too darn time consuming), so I'll continue this thread.
1) Atty choice - It being VV, anything you put on the vvpv is going to perform. I tried everything but my 306s (plan to try them in the near future when I get a 306 sleeve from Wharf Rat at grateful vaper). I have one atty that just needs more voltage and one atty that stood head and shoulders above the rest.
I have struggled a little bit with my hh357s. Even the smallest amount of over feeding an hh357 makes it spit. I bought a couple of those about two months ago and have had them on my other feeders but just end up over feeding at least a couple of times a day and the resulting juice in my mouth frustrates me. - It's like they were made for the VVPV feed system, though. Two pumps and the hh357 has the exact amount the hh357 seems to need. So, i give it two pumps - vape until I notice the tiniest flavor change - give it two more pumps ... rinse/repeat. It's perfect.
2) Size and heft. In a couple of threads, I've seen people asking about the dimensions or requesting pics with something else for size reference in the pic. The VVPV is about 2.5 inches wide by 3.3 inches tall and 3/4 inch thick. So, it is roughly the same height and thickness as a REO mini but an inch wider. - Heft: It is sturdy. Seriously sturdy. With an atty on and the juice bottle full, it weighs 165 grams. For reference: A REO mini with battery in and an atty on plus a full bottle of juice weighs 104 grams - A Maxi rough Stack with an 18650 in it and an atty on weighs 111 grams. A plastic VV box mod with two 14500s installed and an atty on weighs about 80 grams.
3) Fit and finish. I had a chrome unit with black juice door - the finish was perfect, but the juice door was just a little bit rattly (I'm being very nitpicky - it wasn't loose or falling off - just a little bit rattly). I traded that for a black body, black door, and brass top/bottom/&connector. Also a perfect finish and this juice door is a perfect fit. It snaps right in there and stays put no rattles. I prefer the black anodize because it is textured. The chrome was highly polished and smooth as silk... which meant it was a little bit slick to hold as well - Gorgeous, but a little bit slippery.
4) Vape and Charge time: I'm amazed. This mod holds a pair of 14500s. I can vape the 4 ml bottle dry and then some before even thinking it might be time to charge it. I've vaped about 5 ml today so far and it isn't indicating low battery yet. - Charge time: It took somewhere between 30 and 45 minutes for a full charge this morning. The charger is 8.5v 1000 mah, so it charges really fast. (plus you can use the charger as passthrough - nice! )
5) Accessories: Take my advice and get a drip shield if you don't already have one. It will keep this mod perfectly clean. Top feeding is no different than dripping. The VVPV does have a catch cup, but it is not a drip well. The atty connector is raised above the cup. The nice thing there is that you won't need an adapter to raise the atty to the level a drip shield needs. It is perfect the way it is. Screw on an atty and slide on the drip shield - no adapter for extra height needed.
Drip tip... I have no use at all for the whistle tip that ships with the VVPV. I threw it away and I would expect pretty much anyone else to do the same. There is a drip tip adapter that will become available eventually from notcigs, but it isn't ready yet. You can drill any delrin or acrylic drip tip a 3mm hole to accept the tubing. I went a little bit different route and put a bit of 12 gauge SS tube in a delrin drip tip (I used heat to melt it right in to the side after drilling a pilot hole, but I could have just as easily drilled a slightly larger hole and used some super glue). Others have come up with different ideas for drip tips and those ideas can be found in the vvpv thread in the notcigs sub-forum.
6) Performance: Just about every video review these days has someone using their volt meter for load and unloaded voltages. Since there is no voltage display, I'm not sure that really matters... but, my testing indicates you will have a 1/10th of a volt drop no matter what resistance atty you put on it. If you set it to 4v with your meter and put a 2 ohm atty on, the load volts will read 3.9v. If you set it to 4.0v and put a 2.5 ohm atty on, the load volts will read 3.9v. If you set it to 4.0v and put a 1.5 ohm atty on, the load volts will read 3.9v (etc etc etc at any voltage with any resistance). --- I'm pretty sure it's just how the regulator is. I would expect it to be the same with the infinity and the buzz pro.
7) Further performance - "Wow" pretty much says it all. This PV delivers exactly the same hit every time you hit it. Fine tune it to warmth, flavor, and throat hit and that's it. Every time you hit it, it will give you the exact same hit it gave you the last time you hit it. The consistency is impressive. That's partly due to VV of course, but largely due to the feed system delivering the exact same amount of juice to the atty every time. You can keep an atty in the sweet spot pretty much indefinitely with very little effort.
