J. Phil Thien's Projects

JTJ, Thanks for your input! I am choosing to use 5" sheet metal vent pipe for the main duct in my single car garage and 5" flex tube for the drops to the machines as I don't really have the ability to drag the DC around. Because of that choice and based on the reading I have done on this and other web sites, I want to get the maximum cfm and minimum SP losses for my system. I will create the most aerodynamic DC ring I can to start with and also use the extension I have added to the ring input and hope for the best.

I am trying to find a no cost way to measure the suction power I end up with so I will be able to gauge any changes I make to the system...still thinking about that but I didn't make any measurements before I started so I lost that chance.

I am in the process of designing a Phil Thien baffle for the Delta 50-760 DC. The DC "ring" where the lower baffle would be installed is circular enough to install without any major issues. However, when I look at the circular area where the impeller air is dumped, the area has what I would describe as a corner. Basically a pocket that collect large amounts of dust and chips therefore creating turbulence in the ring. Should I create a sheet metal cover to eliminate the corner? Also, would there be any value in creating a short extension to the ring inlet port? This would probably act as a neutral vane.

I am planning on adding a Wynn filter so am also wondering if I should build a doughnut with an ~8" hole and if there would be any value in extending the hole with a pipe or sheet metal into the ring area. This delta DC does not have any inverted doughnut designed into it.

Looking forward to all of you expert opinions on this as I have not found these issues specifically addressed in other forums.

Biowood