Solving DC Resonance

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Project by Ick posted 11-29-2010 06:10 PM 4022 views 1 time favorited 5 comments Add to Favorites Watch

One of the goals of my recent shop remodel was to add a Dust Collection system. I chose the Grizzly 2HP system and put it in the uninsulated walkup attic above my shop. The floor of the attic was tongue and groove OSB sitting on 2X10 joists. The void in the joists was insulated with fiberglass batts, but I immediately noticed a humm resonating thru the OSB and joists. It wasn’t particularly loud, but I found it very annoying.

I improvised a frame that has worked very well. I had some leftover rigid packing foam that was 2” thick. I built a 2X6 frame that was a little over-sized for my DC base, plus a layer of foam around all 4 sides. I cut a piece of foam for the bottom as well. My DC is on wheels and to keep the wheels from tearing up the base foam, I cut a loose fitting OSB base that just floats on the foam.

No more resonance!! I can still hear the DC running, but it is very tolerable.

-- Craig, Oklahoma

5 comments so far

View Ken90712's profile


17553 posts in 3151 days

#1 posted 11-29-2010 06:38 PM

Good idea should help for sure! I bought the Penn Ind dust collector should be here today!!!!

-- Ken, "Everyday above ground is a good day!"

View DrAllred's profile


137 posts in 2785 days

#2 posted 11-29-2010 06:56 PM

Very neat fix, having a low vloume humming all the time can and will become very annoying….

-- David, Mesa Arizona

View AttainableApex's profile


347 posts in 2795 days

#3 posted 11-29-2010 07:45 PM

i did the same thing pretty much to a fan i always have running.

-- Ben L

View NormG's profile


5927 posts in 2966 days

#4 posted 11-30-2010 01:07 AM

Wonderful solution/application

-- Norman - I never never make a mistake, I just change the design.

View BTKS's profile


1986 posts in 3426 days

#5 posted 11-30-2010 06:48 PM

Great idea! I quited an overhead air compressor by mounting it on a platform then mounting the platform on three motor mounts. It kept everything quite but I believe your solution is more effective and cheaper to boot. Thanks for the idea, if I centralize my DC and move the motor upstairs I’ll be using your brain power.
Took another quick look, it’s even the same DC.

-- "Man's ingenuity has outrun his intelligence" (Joseph Wood Krutch)

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