All Replies on Dust collection again

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View DMarusa's profile

Dust collection again

by DMarusa
posted 12-14-2018 02:49 PM

5 replies so far

View jamsomito's profile


457 posts in 1028 days

#1 posted 12-14-2018 03:32 PM

This is a very complicated scenario to speculate. Generally speaking parallel fans will multiply pressure and series fans will multiply flow. The issue is where your system point falls on the performance cuve – unless they are specifically designed for that configuration and system setup (which is always changing when you open and close blast gates), you don’t know where it will land (or what the performance curve even looks like with the double configuration, the real world isn’t perfect). The concern is overworking the fan motors and killing them or worse, starting a shop fire. I would not trust those HF units to be robust enough to take any extra load. If you do try it, at a minimum have some way of monitoring amperage like stumpy nubs so you can shut it down if things start overloading.

Specifically about your question – connecting one at either end of the line is still a series configuration and will increase flow (provided your pipework allows it) and thus motor load. By moving their locations instead of one immediately after the other, you’re only fiddling with the pressures in the components between the two. I have no idea how that would affect cyclone performance – usually it’s under negative pressure. I would be inclined to keep the status quo for the cyclone design.

View DMarusa's profile


4 posts in 407 days

#2 posted 12-14-2018 07:21 PM

Thanks, Jamsomito. I appreciate your thoughtful response.

View ArtMann's profile


1462 posts in 1418 days

#3 posted 12-15-2018 12:14 AM

If you rig this thing up, you will have no idea whether both machines are sharing equally in the load unless you buy a meter to measure current draw from each. One could be drawing enough current to burn up while the other is barely above idle. Clamp on meters that are accurate enough for your purposes can be bought from Harbor Freight for not too much money. That would be my suggestion.

View Holbs's profile


2258 posts in 2631 days

#4 posted 12-15-2018 01:28 AM

    If you hook up two dust collectors in series, you will create a wormhole.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

View DMarusa's profile


4 posts in 407 days

#5 posted 12-15-2018 03:21 AM

Artman, I purchased two meter panels, just like you suggest. One for each motor. I have a few setups I’d like to try with the meters in place. They are both currently running off of the same 40 amp circuit and by themselves, they are only pulling about 12 amps each and seem to be pretty even. They were both bought new, but about a year apart.

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