Blower Output
Blower Output
Hi, Bob,
I agree with Jim regarding the caulk in the blower housing slots. I didn't even add it externally.
In theory, work is being done on the air, which will raise its temperature and thus lower its density. Which means for the same amount of mass you'd need more area. Now, the next question is would it be enough of an effect to be noticeable if you used the same area for outlet as you have for inlet? Or, stated another way, would you be in essence backpressuring the blower? I think, without doing any number crunching, yes.
So then the next question would be whether or not it would have any serious implication for your particular installation and intended use. Or, would the effect, noticeable or not, have any meaning to you? If you've got a rather straightforward collection ducting scheme, with short, reasonably straight lines with no tight bends, limited flex ducting, and plan on using but one tool at a time, then I'd guess the resultant airflow and suction would be adequate. If, however, you have a big shop with long duct runs, or have some convoluted bends, or intend to have a couple of ports open at once (like Rod and Denise's bandsaw), then probably wouldn't be wise to neck down the blower outlet.
Instead of 6", how about a similar length of 8" HVAC insulated flex ducting? Might even get some noise reduction out of it.
For what its worth.
Regards,
DWD
