I currently have a 1 HP single stage dust collector (rated 750 cfm, 2 microns bag type filter) hooked up to a garbage can cyclone separator wich is hooked to a 20′ line of 4” ducting. Lenghts of 4” flexible hose start from wyes on the main line to each tool. One blast gate on each wye. Some dust ports on my machines (router table, bench) are even 2½”. My shop is a small two cars garage (16’X20′ ).
I’ve read Bill Pentz work and find it absolutely inspiring. But…
1-Though reading it made me realise that fine particules are not trapped by my collector, it also made me realise that almost any DC will let the finest ones that get trapped go througt the filter anyway. Chip collection seems satisfactory to me with the setup I have.
2-I know I should install all 6” ducting, but due to time and logistic constraints, it is not practical to do so at the moment. Upgrading my 4” and 2½” ports to 6” ones may require some time I don’t have for the moment. I plan on going to all 6” ducts and ports some day.
My question: It seems that a 4” duct will not carry more than 400 cfm. If I upgrade my collector to a 2 or 3 HP good quality cyclone but leave my ducting as it is, will I get any improvement in my overall dust collection performances (supposing same size particule filtration on both units)? Can a monster 3HP cyclone move more air than a smaller one in the same ducts? Can a unit with higher SP rating improve things in small ducting?
Maybe I can only buy a bigger (say 1½-2 HP)single stage unit with a canister type filter just to make shure there is really 400 cfm or air moving in my ducts, invest the extra money in proper radiant heating and move air out the window with a big size blower. In other words, use the DC as a chip collector and ventilate the dust outside, providing an even healthier environnement with less investment???
Was that post too long? Thank you.