So I have narrowed down my choice of cyclone systems to the Oneida 2 HP 13.5 inch impeller Dust Gorrilla or the Penn State 2 HP 14 inch impeller Tempest. From my understanding they are in different leagues so to speak.
http://www.oneida-air.com/newsite/gorilla_2hp.php
http://www.pennstateind.com/store/temp142.html
The reason Im considering either is because I'm exhausting my system outside of my shop, so I will not need a filter. Since the cyclone no longer has to be "perfect" and just has to be good enough to suck up all the chips at the machines, I'm thinking maybe I can get by with a cheaper system, the Tempest. Let me know if theres a flaw in my thinking here please.
My questions are as follows:
Do you guys know if a cyclone is made louder or quieter by ducting outside?
Besides losing heat or cooling, are there any negatives to ducting outside?
Are CMF ratings improved by not having a filter?
Also, by going this route, would a Tempest be more comparable to the Gorrilla? I do not wish to sacrifice the overall performance of the system.
Thanks folks for the help, I really appreciate it!