big Compressor mounts/feet

[tonycastec]

I need to add some vibration(& noise) absorbing feet to my 7.5hp 80 gall Quincy.
The usual advice is hockey pucks, rubber mats. I just wondered if anyone had tried using hydraulic motor mounts intended for a pick up truck. They are not cheap but I presume they should work much better than the usual items?
As an alternative, what about old-fashioned rubber motor mounts for a truck engine?
Grateful for any specific experiences shared.

 

[zkling]

You would have to look at the durometer or stiffness of the mounts and compare it to something more common.

I use hocky pucks and have never had a problem. Just from the seat of my pants I am thinking that the hydraulic mounts and engine mounts may be a bit soft (low in stiffness), but not sure.

Be careful if the mounts are too soft as they main gain an amplitude (shaking motion) and could possibly cause the compressor (extremely top heavy) to tip over. If you did use something soft you may want to anchor the compressor to the floor through the mounts.

 

[tonycastec]

Mine is a huge 2 stage compressor mounted on concrete outside.I am currently designing a weather -proof 'shed' on wheels for it.Wood mounts will rot over time and the resulting uneven support would be a problem.Pressure treated or Trex might prolong the life ? The upgrade to the mounts is a 'while I am in there' job.
When it runs you can feel the vibration through the thin concrete it sits on.Eventually it will crack. There are mounts made for heavy machinery:
http://www.unisorb.com/products/prod/levline.html

But they are expensive.In the best traditions of G.J. I was trying for an elegant but frugal Rube Goldberg!

 

[tonycastec]

You would have to look at the durometer or stiffness of the mounts and compare it to something more common.

For Example,I am thinking of using 4 mounts intended for a Cummins diesel engine(that uses 2). Total weight of the Quincy is less than the 5.9 Cummins turbo diesel-but would have double the mounts -so that 'should 'be O.K.

 

[zcar751]

Rubber mounts would work better than hocky pucks and hydralic mounts would be that much better. Those are some of the basic noise deadening step for machinery in industry today.

 

[rsanter]

They make rubber mounted feet for machines. That is ideally what you want and they bolt right on. All the rest of the stuff we do here is to save a few bucks

Bob

 

[Flexia]

Find some old lawn tires and wheels. Snd weld the compressor to the rim sideways and then inflate the tire with air. You will have yourself a nice airbag that it will sit on.

 

[Kevin54]

There's a multitude of different things you can use, but no reason to spend a large amount of money to mount it. If it's on a concrete floor, something as simple as a rubber floormat cut up works just great. Four pieces of an old tire, a stall mat, anything like that. I have regular isolation pads that I got from the shop they threw out. All they are is a piece of OSB with a honeycomb looking piece of rubber on both sides. The total thickness is maybe 3/8"- 1/2" thick.

 

[tonycastec]

Find some old lawn tires and wheels. Snd weld the compressor to the rim sideways and then inflate the tire with air. You will have yourself a nice airbag that it will sit on.

Brilliantly redneck -I love it!

 

[Falcon67]

Best think I've found is stall blanket material from Tractor Supply. High density rubber. Cut a big square, slide it under the compressor - done. My 60 gallon upright sat on three pieces 4" square for 4 years and never moved a millimeter.

 

[tonycastec]

Best think I've found is stall blanket material from Tractor Supply. High density rubber. Cut a big square, slide it under the compressor - done. My 60 gallon upright sat on three pieces 4" square for 4 years and never moved a millimeter.

Interesting. I have read this suggestion on G.J. previously but I live in an urban area -no Tractor Supply for miles. I might try to find it online.

Is this the correct material:
http://www.tractorsupply.com/webapp...ory_rn=&top_category=&urlLangId=&cm_vc=-10005

 

[Charles (in GA)]

MSC has reasonably priced machinery feet.

THESE are what I used, about $20 each

 

[Zrexxer]

You're not going to be able to buy horse stall mat online, those sheets weigh about a hundred pounds each.

My Champion sits on these, found them at Home Depot.

 

[tonycastec]

MSC has reasonably priced machinery feet.

Charles, Thanks - those look sturdy enough .Thanks for the link!

 

[tonycastec]

I found some "horse stall mats" (not blankets) on Craigs List about 40 miles away -out in the country.
http://ventura.craigslist.org/grq/3815069101.html
They are $45 for a 4 ft by 6 ft piece -That is enough material to make a set for everyone who kindly contributed to this thread .

 

[floyd]

I bough the same ones as Zrexxer.

 

[ssentt]

Best think I've found is stall blanket material from Tractor Supply. High density rubber. Cut a big square, slide it under the compressor - done. My 60 gallon upright sat on three pieces 4" square for 4 years and never moved a millimeter.

Thats what I have, horse stall mat... 3/4" thick and never had any issues with it.

 

[JakeKohl]

Mcmaster.com Part Number 9376K179. About $7.80 each. I put them under my compressor (drilled anchors into the concrete) and they're cheap, specifically for this purpose, and work really well.


DSC_3086 by Team Seacats, on Flickr


DSC_3091 by Team Seacats, on Flickr


(and no, my tool room is no longer pink...thanks.)

 

[tonycastec]

For a big,clunky, old compressor like the Quincy, it needs super heavy duty feet because of the weight and vibration. It is probably double the weight of the modern compressors shown in the photos. My engine crane really groaned when lifting it off the trailer.
A great thread though & I hope it helps others who follow -if the Search function will find it!

 

[HAP]

+1 for the ones from HD. They are perfect. The ones from Lowes are not as noce and cost $10.00 more...

 

[koditten]

What are you doing that requires that much vibration absorbence? micro surgery? Just use some 4 x 4 wood blocks. Cheap, easy and usually on hand. Plus you can lag bolt some castors to the blocks if you want move the compressor.

All listed above are great, but really not needed. If that compressor moves with the use of blocks, you got bigger problems.


KO

 

[thatmaskedman]

You might want to go to a concrete slab under it. I'm assuming it's on a wood floor. Nothing like dead weight under the mounts to isolate sound/vibration. I worked under a 7.5 DeVilbiss, mounted on a plywood floor. Sounded like someone going at it with a air hammer on a base drum. Sheer torture.

 

[Cryptic1911]

They make vibration isolators just for this.. it's a metal box with springs in it, and you mount the compressor to the springs so that they are decoupled from the floor

 

[tonycastec]

GREAT!
You mean something like this in the video:

 

[toomany]

What are you doing that requires that much vibration absorbence? micro surgery? Just use some 4 x 4 wood blocks. Cheap, easy and usually on hand. Plus you can lag bolt some castors to the blocks if you want move the compressor.

All listed above are great, but really not needed. If that compressor moves with the use of blocks, you got bigger problems.


KO

x2

I reused the pallet my compressor came on. Simply cut it down and re-bolted it. Hasn't moved at all in the last 5 years. I don't notice any vibrations either. As an added bonus it gets it up higher so I can get at the drain easier.

 

[lametec]

I used 3 of these:

They're engine mounts for a Sea-Doo PWC. I bought mine used off ebay, $10 for 4 of them.

 

[Alta_Racer]

I used the rubber wheels for a boat trailer. (the ones the boat rolls on) Got them cheap at Princess Auto, but any marine supply should have them. Easier than hockey pucks, they had the hole already! Not as hard as a puck, but firmer than rubber. 2 years later, not a mark on them. 60 gal 5hp single stage 3 cyl.

 

[Cryptic1911]

GREAT!
You mean something like this in the video:

yeah pretty much! they aren't that large, but should work the same