J. Phil Thien's Projects

So, on a top hat, how wide a slot can you get away with? Does wider help/hinder? Mine wound up being about 2" wide.
Thanks.

One other question. Is the size and orientation of the outlet hole a possible issue?

I will move the walls closer to the slot. My next question is, is it too high?

Here are a couple of admittedly poor pics. The band is made of pvc, set in a groove in the mdf lid and base. the intake hole is set in a piece of oak. with a 4" hole. the output is also 4". The band is around 6.5-7" tall.
Hope this helps.

Sorry they are so dark.

Anyone? Any help would be appreciated.

Connected to 1.5 HP steel city with 4 in. pipe.

Just finished my top hat build. I used PVC plastic for the actual ring, and my top hat is 6.5" high with a 4" inlet and outlet. It is 18" in diameter. I am losing massive amounts of suction....no idea why. Could it be too high? Air leaks?
Help please.