Central Pneumatic 21 Gallon Vertical Air Compressor From Harbor Freight
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- เผยแพร่เมื่อ 23 พ.ค. 2016
- Update Video: Simple Mods/Add-ons to Central Pneumatic 21-Gallon Compressor:
• Simple Mods/Add-ons to...
This is a first start up of the Central Pneumatic 21 gallon air compressor from Harbor Freight. I have been in the market for my first compressor for a while. Despite the other name brands out there, found this one to have a decent price point for the features I was looking for. Would love to spend money on an Ingersol Rand or other brand, but for what I will be using this for, price point and features are just fine.
Ultimately removed this filter setup I created for now until I can find a way to quiet it down, but for those interested, Parts list below:
- 1/2"npt male to female 90 degree pipe nipple
- 1/2"npt male union
- 1/2"npt female to 1 1/2" female Sch 40 PVC Adapter
- 1 1/2" female to 3" female Sch 40 PVC adapter
- 3" elbow 45 degree
- Spectre high flow cone Air filter
- metal pipe hanger to secure to body using existing screws.
Hope you find this interesting and thank you for watching!
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Disclaimer: This video is for Informational purposes only. Please read and follow the instructions that came with the unit. Should you try to modify or follow my process, you do so at your own risk. - ยานยนต์และพาหนะ
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I just got one 5 days ago in Salem OR for $62!! It was a refurb that was sold at discount during a sidewalk sale. The guy returned it saying it wouldn't run, but for the price I couldn't say no. I did keep the receipt, and was told I have 5 days to return it. Sure enough it was seized, so I disassembled it and found what looked like a spun bearing on the connecting rod. I oiled the hell out of it with 3-in-1, got it to turn,, but noticed that the crankshaft wasn't even hitting the oil in the case. I overfilled it and hand-spun it with the head off and the piston running into a veggie can with more oil; it did finally run, but the first batch of oil was horrid! I rinsed that with abt. 5 oz. of oil, drained it, and refilled it. Runs fine, but I did not see where it needed upwards of 20 amps to start (when I originally ran it , I was using a 100 foot extension and it bogged down some). I now have it run much closer to an outlet with a 16g extension. Needed some elbow grease, but a great purchase IMHO.
Sounds quiet enough and smooth i think. Great looking machine
I used 1.5. 32oz can of harbor freight oil before I started to see better oil color. Its like 5-6 oil changes. And still planing to do 2 more before I put husky fully syntetic oil to it.
The fast and compressorious
lmfaooooo
uknow them 100 pound propane tanks for 90 bucks at lowes that are 25 gallons. i put one of them on this same unit. so thats damn ner 50 gallons of air for under 250 bucks. that 2.5hp motor has no problem keeping up. now i have plenty of valium of air. i painted my lil Chevy S10 with it modified this way. i seen it on TH-cam. and it works folks. ur not going to find a 46 gallon air compressor for under 250 bucks. with alil work ull have one. good vid guy
The dark oil could be due to a preservative added to the crank case for shipping. This will minimize corrosion, and usually is compatible with the oil. But then again, we are talking about Harbor Freight, who cuts corners to keep the cost down.
Nice job
See people laugh at the filter and am like okay... then i seen it at the end 😂😂😂 brilliant
you should do a video of putting the inline filter
To add a comment for anyone thinking of quieting their air compressor... I had a craftsman unit that seems to have the same thread as this thing. I used one of those street nipples like the creator here and adapted it to an old spin on automotive oil filter I had lying around. It quieted up SO MUCH, I was amazed.
+volvo09 I actually have one on it right now as a test and it is much quieter! Plan is to post another video showing this and a few other options I found. Putting them to the test because I'm curious about the results myself. Hopefully soon!
Cool, I'll keep an eye out... I want to get that compressor, and any compressor I get will get some work to quiet it down.
another thing id test if I had that... is taking your current filter off, putting a mesh in that tube near the inlet, and filling the tube and filter cone with packed rags. Should be almost no restriction, and quiet it down quite a bit. The first mesh would just keep the rags from working their way into the intake, or sucking to the small intake tube.
I use the royal purple also, but you get about 4 changes from the bottle for $15 from summit.com Honestly don't think it does anything different vs using the Husky or similar brand oils other during winter it doesn't get to thick on like others in cold weather and stays just right through summer so I like to use it for its consistency. Plus it's cool looking purple color lol
Hope you tipped the compressor towards the drain plug? I did not see the drain valve & removed my sight glass & tipped it. Then I went online & saw the drainplug. I then removed the black Phillips drain screw & tipped it toward the drain screw, almost laying it down onto the ground, ensuring that I get every bit!!! Read a review where this person removed the motor & added rubber pad under the motor & quieted it up a bit. But please tip the tank when doing oil changes & when draining the moisture after every use!!!
I just got this compressor yesterday and ran some fresh oil straight through it and then when I filled it up a second time accidentally poured a bit too much in but I drained it right away, didn't run it over filled. But I noticed some green stuff came out mixed in the oil, is that normal? Was it some sort of lube higher up that mixed in with the oil? I drained it completely and refilled it and it seemed to run ok after that at least!
I just got one of these, Just replaced reeds n made a video for my channel. They are good compressors !
why didn,t you fill it up with kerosine a few times and drain. then put the good oil in?
How we make this air filter please tells about it
Haha, I like it. Maybe slightly overkill on the filter size, but I can't hate cause I think i am going to do the same thing with a pod filter that I have laying around. :D A filter is a filter
After 7 years now, are you still using that compressor? If you have a magnetic nutdriver, that will make changing hot oil easier. Oil flows faster when it's hot/warm.
I think the basic compressor comes in about 90+ decibels.
Same motor my honda has
Hahaha. Riced out the compressor.
Its not tuner indeed
I saw a review about it and the reason why is so loud it is because it has plastic mufflers. So to make it less loud is to change those to metal ones.
There are a couple I have been eyeing that i might try and will work much better than the cheap plastic one. They do have metal housings but are also rated for decent filtration/ sound deadening and flow rate. I've seen pricing ranging between 20 to 50 bucks or so. some even more but that way out of my price range.
Don't use conventional oil! It has detergents! Run only compressor oils. I did do a oil drain before and then after the 30min break in. This compressor will last a long time if you maintain it with fresh clean oil.
If you plan to leave the tank pressurized all the time you should invest in an automatic drain. Keeps the tank from corroding.
Im having a problem with mine where it builds pressure but only runs for 10-20 seconds. Im thinking reset button - Any ideas?
Sounds like you may be tripping the on board breaker or home breaker. This unit does test the limits of a 15amp breaker and a gfci. I pop them on occasion. As long as it's the only thing running should be okay.
So how's it going? I see the have a super coupon for $149. I just might get one in the coming days. Would you buy again? Has the oil cleared up?
Compressor still running strong. It has sat under pressure for the past few weeks with no movement on the gauge which tells me the seals are very good. Since this video, I have replaced the regulator with something bigger and installed a large moisture separator. Also removed the monstrosity of a inlet filter/muffler I created because it actually made it louder so it's back to the drawing board(may do an update soon). Oil seems clearish in the little sight glass but should go ahead and change the oil since I have used it for some heavy use projects. for small shop projects this compressor was a pretty good investment.
Damn, I just ran across this video while looking for a way to make my compressor(the same one)quieter I've had it for 4 years now and have the original oil in it and it runs atleast 30 min a day. for some reason I thought the only reason to put oil in the compressor was so it would go through the airline to oil the air tools.
Nope, You need a separate in-line lubricator for your air tools. The oil in the crank case is only for the compressor piston and crankshaft. I created another video after this showing my new moisture separator and regulator setup. Same concept can be used to install a Lubricator if needed.
That actually doesn't sound too bad, do you have a decibel app on your iPhone?
+David Coyote I have an android, didn't think about looking for a decibel app until you mentioned it. Think I will and post another video doing some tests with different intake setups.
what parts did you use for the filter ? I have the same comp . thanks.
Just updated the video description with the parts used. I did take this filter setup off because it amplified the sound. Looking to modify this filter setup even more to hopefully quiet it down but still have a decent fill rate. Once I have had a chance to research and build it, I will update with a video. Thanks for watching!
oh ya the air filter make sure is all metal and it will quiet it down
lol.... additional 15hp and 50Nm of torque increment..
Lmao. Im dead from loughing becouse of that airfilter ))):-):-):-):-)
I was chuckling myself when I finally had it assembled... I Pulled it off after this video though because it was way too loud. working on another to try and quiet it down. Hopefully soon I can find some time to make the update video. Thanks for watching!
Any updates on the noise reduction?
Does that compressor still run good
Yes! Use it multiple times a week and has kept up with most projects I've used it on. Struggles a bit while using an HVLP spray gun, but for small to medium tasks, it's been great!
A little late now, but it would have been interesting if you took that used oil and ran it through a coffee filter so you could examine it for particulates. I currently have a small Campbell Hausfield air comp I bought at Home Depot about 25 years ago, that thing makes so much noise in my garage it sounds like a train passing through! I always use ear protection when I'm running it, I'm 71 but I still enjoy my music and want to continue to do so. I recommend you don't ever waste your money on any kind of oil labeled as semi synthetic, there is no standard for oils labeled as semi synthetic, it would be totally legal to add only one drop of synthetic oil to conventional, and then label it as semi synthetic, so you have absolutely no way of knowing what you are getting, personally...save your money and just get the conventional oil.
+G56AG didn't show it but it was a dark gray sludge. Probably covered an area the size of a quarter. Wish I had shown it but took too long to settle. Didn't trust the Harbor Freight oil so went with something I knew that wasn't too expensive. Still use ear protection around this one. Have plans to run some tests on noise suppression in the future. Thanks for watching!
This one seems to be about the perfect size for most people, including me, soon. From the date, I see you have had it for nearly 2 years. How's it holding up? I'm thinking Preventive Maintenance is the answer to most problems.
Runs great! Absolutely no problems so far, I have modified it a bit with an oversized filter/ regulator system which I posted another video on. Other than that it's been great! Still haven't tested bigger air tools with it but the few times I've run a Brad nailer or air gun, tank has lasted a while. Need to make an update video on it soon I guess. Spring is coming...think I'll do one soon! Thanks for watching!
Will this unit rip off lug nuts and run an air hammer/chisel?
could probably use those tools in short intervals depending on the CFM rating of the air hammer or Impact you use.
Scott Scott.My unit seems to do decent with my kobalt impact gun air ratchet air hammer rotary tool and blow Gunn set it is under rated for impact but removes 6 lugs easily off my chevy 2500 and keeps up
I've used it to run an IR air chisel to remove my master shower's tile floor. Made pretty quick work of it.
Mobil 1 synthetic works fine...no need for expensive “Compressor Oil”
Thats a detergent oil, not supposed to use detergent in compressors.
100 dollars on ebay. brand new.
You my as well replace the reed valves now with stainless reeds .08/20/2022
Still humming along just fine. But I may look into this. By any chance have the part number if you did the stainless upgrade?
@@jungleking007Channel Purchased mine on ebay
air filter looks stupid
I agree, which is why it did not stay on for long. Was an experiment really to see if it would filter better and reduce noise. filtered okay, but increased the volume. I wasn't trying to win any beauty contests with it!
@@jungleking007Channel so did you figure a way to make it reduce noice
Not yet, but I have some ideas to experiment. the next video on the compressor will be on this subject. Other projects took over. I want to do it soon though as I am reconfiguring part my garage into a workshop, and the compressor will be finding a semi permanent home in the corner.
Pointless to add another tank to that low quality pump, you will burn up from empty to full capacity in a few cycles....
cbnx82703 the fact he’s run it for 2 years without fail means you don’t know what you’re talking about, 😂