Hi all. I am completely new to the air delivery systems. I am looking for information that explains in detail what it takes to make an air delivery system work. Things like fan sizing, pressure relief, pressurized hopper vs. non-pressurized etc.

 On an older Concord, can one buy the complete meter box? Aftermarket? In other words, if I have a tank with no mounting flange, what brand or style meter system can I buy as a complete unit and make my own mounting flange? I only need to feed 15', described as 12R15.

 I have a Crary air reel fan in good shape. For a single shoot, I think I can go directly into one secondary manifold with 12 outlets,....right? But I have no clue how much air I need or where to put in a pressure relief, etc. 

 Crops used in the seeder would range from grass seed to wheat.

 Any guides to sites that might help educate would be appreciated. Thanks.