Well yeah guys, I'm totally familiar with Zahn cups. Flow testing and all that. I've got a deep background in manufacturing speed painting for various mfg industries.
Class A finish on modern powersports products is where most of my liquid coatings time comes from. (think snowmobiles, personal watercraft, ATV's, motorcycles) I know for certain that I've sprayed out well over 50,000 gallons of paint myself. Most of which was clear. (pressure feed, hauling ass non stop for 8 hrs a day)
My flow test was simple but meaningful. Cup measured volume, same feed for both guns, no air, just testing volume flow capabilities on the same product (reducer in this case).
The "1.3" sata, flows product aprox 13% faster than an actual 1.4
I've not sprayed production volumes for many years now. I did it long enough, then entered into powercoating for a string of 10 or so years. Combined I'm well over 20 yrs in coatings on high scale volumes, close to half of that being management of a coatings department for manufacturing. (which I grew tired of)
I'm now just a guy working for himself on up to 3 projects at a time in his own shop. Probably similar to a lot of other guys here.
I don't spray every day, far from it these days. But by the time I get my restorations ready for color and clear, I have a ton of time in metal work and body work and I really need to nail it when it's time for the color and clear. That's why I went all nerdy with nozzle measurement, flow testing etc. Because it means something to me, it helps me do my job better when I understand my tools better.
Anyways, I'm stoked about the new Sata. I have a project almost ready for color and clear, probably be spraying the fun stuff next week.
And when I say "fun stuff", I mean I got a good sized shipment of SPI products off a speedy delivery truck right about quitting time today.