side inlet or top inlet

[alan m]

hi there
i made a top inlet design using 4" fitting . i found that it didnt seperate out all the dust . maybe 50-60 % efficient. it left a lot on the top of the baffel.
i have a plexi top to the baffel so i can watch the dust swirling around. it was getting hung up on the side of the wall going around and on the back of the inlet fitting.
i had to widen th eslot to allow more dust down but it didnt fix it much.

then i turned it into a side inlet . now i am getting 98%+ (sheet rock bucket in seperator and 2-3 spoons in dust colector) of the dust  even sucking it out of a bucket as fast as i could. i am sure it would be higher % coming off of a machine

everything else stayed the same (even the dust , and the dust was banged around a few times in and out of this thing so it was more likely to pass throught the seperater as it got finer)
so i get the feeling that the side inlet design is bettter/
has anyone else thought this