Originally Posted by
Dan Coker
Do you guys think that I could get close to as good of performance with 8” trunk instead of 12”? The intake on this d/c is 12” so I just assumed that is what the original manufacture intended. I know that I could measure the CFM and calculate the answer to this question but I am short on time and not very good at math. I am not trying to eek out every little bit of performance from this thing, I just want it to work well enough to keep the area that it is going in clean.
Unless you are running very large machinery, such as a big wide-belt, that has intense dust collection requirements, you will not be compromising performance enough to matter much if you immediately step down to 8" to make acquiring your duct work more affordable. IMHO...for what that's worth. Yes, it will not move as much air, but the demands of the tool at the other end is what matters. These large systems were designed to be able to extract from multiple tools concurrently...if that's not your situation, you have wiggle room in your duct design for sure.
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The most expensive tool is the one you buy "cheaply" and often...