I get an encoding error when I try to play it with Windows Movie and TV.
But I use the free download VLC to play videos and it works there. It shows the various part floating onto one another to form the completely assembled diaphagm.
The homepage has a 2019 date and they have an email address
I could see this without the video, and I have looked at this diaphragm before on line.
It is the same concept as the Proto2000/American Limited diaphragm wth more parts and somewhat better detail.
Likely pretty fussy to assemble and install.
I’ve never had a trouble with the assembly and installation of the American Limited design, but I have had feedback from others that they found them challenging.
I have about 200 passenger cars, and I already have American Limited diaphragms on the ones that are built/ready for service, and I have a good stock on hand for the rest.
The diaphragms that The Coach Yard puts on their high-end brass passenger cars look very similar to the American Limited ones (the TCY web site does not specify the source). They work very well.
And, quite surprisingly (at least to me), they appear to make their models to be run and not just collected or displayed. I once saw one of their Santa Fe 1946 Grand Canyon heavyweight sets (truly beautiful if you can spend $5,500 for 8 cars), and one of the trucks of the baggage/RPO car looked slightly different. Looking closer you could see that it was motorized (see the Brasstrains web site for TCY-0489E or TCY-0489W), to assist your locomotive in pulling the set. The Coach Yard does not even mention this on their web site. If you do not like the looks of the motorized truck, you can buy the same car without it.