Check out your local U pull it auto wreckers. An air box and hose will be in the $5 - 10 range. Just pick a popular car for ease of filter availability
Muffling Air Compressor
- Thread starter DCarr
- Start date
Check out your local U pull it auto wreckers. An air box and hose will be in the $5 - 10 range. Just pick a popular car for ease of filter availability
NewShockerGuy
Well-known member
I went with the bigger solberg filter and it made quite a bit of dfference.. It only has one inlet hole on the housing... do you think I should drill two more in it or keep it as is?
I've attached two pics. Stock air filter and the solberg.
-Nigel
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welder4956
Well-known member
Idea stolen and implemented. Many thanks Duane!!
P.S., I did not have a 1/2" NPT tap for the holes though the mounting plate, so I ground the threads off the black 90 degree street ells and welded them on.
P.S., I did not have a 1/2" NPT tap for the holes though the mounting plate, so I ground the threads off the black 90 degree street ells and welded them on.
Falcon67
Well-known member
FWIW - here is the original muffler on my compressor intake, the one that it came with:
Here is the replacement - a 1" thread tractor/mower muffler with a small auto air cleaner top.
The change didn't make one damn dB difference in the sound level. That's measured with a meter, not "seat of the ears". Pump and motor make all the noise on this one.
Hiding it in this box with sound muffler board and insulation, that cut the noise down quite a bit.
Here is the replacement - a 1" thread tractor/mower muffler with a small auto air cleaner top.
The change didn't make one damn dB difference in the sound level. That's measured with a meter, not "seat of the ears". Pump and motor make all the noise on this one.
Hiding it in this box with sound muffler board and insulation, that cut the noise down quite a bit.
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No heat problems with this setup?
Falcon67
Well-known member
No, it doesn't run long enough to be an issue. If I was shooting a car or something, I'd open the door and point a fan in there. Otherwise, it runs maybe once every other day or so depending on the leak down or if I forget to close all the valves. I bought a duct exhaust fan, relay, etc then figured out "meh", it wasn't necessary.
Idea stolen and implemented. Many thanks Duane!!
P.S., I did not have a 1/2" NPT tap for the holes though the mounting plate, so I ground the threads off the black 90 degree street ells and welded them on.
Looks good ! I just finishd making a plate today for a member on here. Shipping it out tomorrow.
DirtRoad
Well-known member
Yup just got your plate, will take pics asap.
I dont have the air filters yet or pipping, so all i can take pics of is the plate. Looks like its going to work great, thanks a ton!
I dont have the air filters yet or pipping, so all i can take pics of is the plate. Looks like its going to work great, thanks a ton!
what did you start with ?
The compressors we are talking about here had NO sort of Muffler, just a Filter.
DirtRoad
Well-known member
Do you have a pic, I don't think we have the same setup as you.
I take it the box in the picture is the filter / muffler ?
Put your finger or ?? over the air inlet(s) for a split second and see if it quiets up at all.
Intake noise can be reduced but the motor and pump produce the majority of the noise. The dba reductions that are advertised like 15-30 dba reduction could be true in a lab setting but add a pump and motor and you have nothing remotely to the dba reductions that were advertised. Once you get a handle on this, life will simpler. I make these statements based on a 1725 motor with a slow rpm pump.
welder4956
Well-known member
All I know is that mine is less noisy that it was. It is located in the basement and was rather loud in the rooms above. Can still be heard but is very muffled and more bearable.
incurablescrounge
Well-known member
A friend of mine has a commercial 5h with 80 gallon tank, slow motor with 2 stage pump type. He set his tank on hockey pucks and used a pickup style muffler (cylindrical shape 8-10" diameter 24" long) on his intake. Amazingly quiet! You hear a little thumping of the pump and swishing of the belt and pulleys.
keithh2oskier
Well-known member
I never realized how loud my compressor was until I used my FIL's this weekend. I need to find a way to silence mine. I have a 12 gallon Craftsman oiled compressor and there is no reason it should be this loud. Something has to change. This is a bad picture but it has some sort of air filter. Where are you guys getting these filters? I would love to get one for mine to see if I can quiet this baby down. Running a filter outside isnt really practical for my application. Thanks.
I'm using that same filter on my mods, and thats the filter that came on my Craftsman " Industrial " air compressor which ... seriously ... is VERY, VERY quiet. Model # is 919.195410
Your problem is in the compressor, motor design.
for a test on the noise created from the air intake ( which is the source of noise for this thread ) put your finger over the hole in the filter for a split second, if no change ... then your going to have to search for another way to get it quiet.
Your problem is in the compressor, motor design.
for a test on the noise created from the air intake ( which is the source of noise for this thread ) put your finger over the hole in the filter for a split second, if no change ... then your going to have to search for another way to get it quiet.
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This may be true with a compressor that comes with a muffler on it. Ours came stock w/o any sort of muffler on the air intake.
DirtRoad
Well-known member
Yup we get no muffler at all. Its just a fabric type filter held in by a metal grate holding it in place. No inlet hole or anything.
I personaly dont think that they are that loud but i used a crafstman 33 gallon oiless for over ten years and so to me its not to bad.
But now that DCar made me an adapter plate im going to hook it up just like he did, hell why not, if it makes it even more quiet sweet plus it looks way cooler.
I personaly dont think that they are that loud but i used a crafstman 33 gallon oiless for over ten years and so to me its not to bad.
But now that DCar made me an adapter plate im going to hook it up just like he did, hell why not, if it makes it even more quiet sweet plus it looks way cooler.
DirtRoad
Well-known member
Finally got the chance to install the plate and mufflers.
Before at 6ft away it was 68db, now it's 63db. It changed the tone of it more than the loudness.
They look way cooler though and the air is being filtered way better than the stock piece of **** filter that it came with.
Before at 6ft away it was 68db, now it's 63db. It changed the tone of it more than the loudness.
They look way cooler though and the air is being filtered way better than the stock piece of **** filter that it came with.
DirtRoad
Well-known member
Here we go
I'll throw this out there too, many compressors are mounted in the corner of a shop, which acts like a megaphone.
Go get yourself some acoustic ceiling panels from the homecenter, like they use for ceilings in basements, and nail, glue, or staple them to the walls surrounding the backside of the air compressor...this will absorb the noise being put off by the belt/pump rather than re-projecting it back out into the room.
Seen a guy once run a line from his intake up into his shop attic and over to where the filter would be easily cleaned/replaced by the attic access door. Compared to what a guy is used to hearing with these large vertical's it was noticably quieter, would guess about half as loud as i was used to hearing...i do like the muffler deal.
Go get yourself some acoustic ceiling panels from the homecenter, like they use for ceilings in basements, and nail, glue, or staple them to the walls surrounding the backside of the air compressor...this will absorb the noise being put off by the belt/pump rather than re-projecting it back out into the room.
Seen a guy once run a line from his intake up into his shop attic and over to where the filter would be easily cleaned/replaced by the attic access door. Compared to what a guy is used to hearing with these large vertical's it was noticably quieter, would guess about half as loud as i was used to hearing...i do like the muffler deal.
Its looks really good, how was the fnal fit .... any movement in it at all ?
Now for the big question ... how much was the noice reduceded ?
I'm glad to see it on there !
I started out thinking about adding plumbing and then a muffler, then routing it into the attic with a large air filter on it. Then started coming to my senses and looking at easier ways to get the results I was after. I am certain that using the 2 solbeg filter / mufflers vs the stock set up which was approx 14" thick and involved some wire grate inside & out w/ 1/8" of fiber in between them ..... this set up dropped it down to between 30 - 50 % of what it was stock. Really a huge difference.
Racecarl
Well-known member
This is a close-up of my 5 hp two stage compressor. The original air cleaner was mounted to an elbow near the top of the head. I unscrewed the air cleaner, installed a 1" pipe ******, and procured a piece of hose that just fit over the 1" ******. The hose runs up into the attic and the air cleaner is installed in the other end of the hose. While I do not have a dB meter to confirm the results, I think this modification made a substatial difference.
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SmokeyBC
Well-known member
My 6HP compressor sits on an upright 60 gallon tank. It's in the corner of my shop and very noisy. The three metal legs sit on the concrete floor.
I just put three rubber pads, each about three inches thick, under the legs. It is noticeably quieter. A bonus is its easier to reach the drain valve at the bottom of the tank.
I'm delighted with this easy change, with such good results!
I just put three rubber pads, each about three inches thick, under the legs. It is noticeably quieter. A bonus is its easier to reach the drain valve at the bottom of the tank.
I'm delighted with this easy change, with such good results!
DirtRoad
Well-known member
I had to grind down both sides about 1/6 inch total. Then i had to grind down the top and bottom about an 1/8 of an inch, i should take a little more off and probably will at some point. I had to be very careful not to take to much off because if i did then it wouldnt fit snug or i would have gaps. It fits great as it is now though, no movement in the plate at all.
Went from 68db to 63db. What it seemed to do more than anything is change the tone of the sound more than the loudness of it. Which in itself is a big improvement. Its also nice to know that the air is being filtered much better than the stock pos fabric filter it came with.
All in all its worth doing imo.
86turbodsl
Well-known member
If you really want to quiet your compressor, plumb the intake to the outdoors.
DirtRoad
Well-known member
For me it wouldnt be worth the hastle.
muzikmanwi
New member
- Joined
- Jan 18, 2013
- Messages
- 2
I know this an old post but are you still making these? Thanks
ovrrdrive
Well-known member
How funny... I ended up doing almost the exact same thing to mine but I never saw this thread. Great minds think alike.
http://www.garagejournal.com/forum/showthread.php?t=306235
http://www.garagejournal.com/forum/showthread.php?t=306235
