Air compresssor

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What do you guys think of this compressor. Its not belt driven but it does have a nice 7cfm at 40psi and 5.3 cfm at 90psi. I have a non functioal 30g compressor that i might convert into an addition air storage tank. I'm thinking i could paint a small car ( saturn) with the additional 30 gallon tank plumbed in. Its not too big for wheeling out to inflate all my car tires.

http://www.homedepot.com/p/California-Ai...10?N=5yc1vZc9pn
 
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You could paint a car with that tank, you would just have to wait for the tank to refill. Yes, I've dont it (part of a car, anyway).

Exactly what's wrong with your existing compressor?
 
Originally Posted By: zzyzzx
You could paint a car with that tank, you would just have to wait for the tank to refill. Yes, I've dont it (part of a car, anyway).

Exactly what's wrong with your existing compressor?


I'm not sure whats wrong with it. Its a proair compressor 20 years old. I did run it with to long of an extension cord ( i did not realize it pulled 15 amps). It started slowing down and stopped and flipped the breaker. No fuses in it, it does have 2 large capacitors perhaps they are bad. Just figured it was not worth fixing due to its age ( it was not a belt driven compressor either.)
 
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Originally Posted By: zzyzzx
What did it do or not do when you tried to start it?


it does nothing, its dead. No fuses, a thermal breaker i think, nothing to reset, no fusible links i can find. The only thing i did not do was check the cord for conductivity, i might do that tomorrow.
 
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Oil free compressor? Blasphemy!

That's all I have to say...nothing constructive.
grin.gif
 
On my various sites in the winter we leave the compressors in the van to keep them semi warm. So I buy those 10 gallon air tanks for pumping up tires to use as an "air pig".
I get 6 3/8 females welded to nuts on the front side of the tank. Then I get 2 males welded into the ends.
That turns my 5.5 hp 8-9 cfm(@ 90 pounds) into monsters. I adjust the bypass valves to start pumping air into the tank at 110psi instead of the stock 90 psi.
What that does is reduces volume loss to the guns.
When the compressors are stock they can run 2 spikers and a stapler. Well because we machine gun the staplers they use an incredible volume of air. Once that compressors hits 90psi the pump starts filling the tanks again but it too late. Because the guys aren't stopping to allow the volume to increase again it eventually gets low enough that the nails won't sink then the guys have to pound in the heads. Huge time waster m
So what I did was make the compressors pump air into the tanks when pressure gets below 110,instead of 90. That then gives the stapler enough air to nail off the walls without reducing the pressure to the point that the spikers don't sink the nails.
The air pig gives the pump more volume. More volume,especially with an impact or sprayer is vital,so adding the tank equates to less pressure loss while using it,and no waiting for it to pump up.
When I was 21 and framing condos I had to buy this pump that cost 3500 bucks. It had a 20 horse motor and an inline pump with Pistons the size of coffee cans.
It was the only way I knew how to keep enough air for 20 guns. Otherwise I woud have had to buy 5 or 6 of the standard framing compressors to run all the guns.
Then I went off on my own. Money got tighter. I always paid my men first,,then I take what's left and pay myself,service equipment etc.
I landed a 12 plex,and it was 60 days before I got my first cheque. So I couldn't afford a huge compressor because I had just enough to cover 2 months payroll.
So I looked at my eagle compressor and wrote down why it coukdnt keep up.
First was tank volume,second was flow volume. I couldn't do anything about flow volume without buying a bigger pump and that wasn't an option so I. Identified that our air issues only presented themselves when we were stapling,because we are shooting 10 staples a second.
So pressure maintenance needed to be adjusted. I figured out that the nipple you lift to bypass the tanks and flow the air to the atmosphere has 2 bolts threaded into each other with the nipple on top.
If you adjust those 2 nuts it changes at what pressure the nipple pops,which stops air pumping into the tanks and vents it and it changes what pressure that nipple drops,which pumps the air into the tanks.
So I played around all night with that thing. I had it adjusted so high the bleeder valve blew cause there was 200psi in the tanks,and so on. Trial and error taught me that the height of that nipple has to remain consistent so tank max pressure isn't exceeded however how you achieve that height can be modified.
Anyways once guys saw what I was doing they all had the same problems and after try themselves brought their pumps to me for tuning.
So I charged every crew 50 bucks. That 50 bucks made them thousands since there was no lost time pounding nail heads,and no need to spend huge dollars on bigger compressors.
Well I didn't budget enough for payroll. I was short 1000 bucks on the last payroll prior to my draw,however the 50 I charged every crew,in every subdivision in our suburb covered my a$$.
Necessity is the mother of all invention. As a kid I took everything apart to see how it worked. As an adult that compulsion I had as a kid was the foundation for me.
What I learned as a child I applied to my equipment as an adult. Saving myself money,and making it too.
2 simple little bolts were the difference on whether I would get the job done,or fall flat on my face.
Funny when you consider it. That job paved the way with that particular builder and I vontracted from him for 6 years after that. It was my first project after leaving my dads company,and umbrella. Which meant no more parent company coveting my nails,tools,payroll,fuel.
I had to do it myself. Had I not figured out how to make what I had work I wouldn't have gotten that job done,and I'd likely have had to work hourly for someone else.
2 bolts adjusted started my career,my company.
Another novel.
Twice tonight I've gotten sidetracked.
Gotta stay away from that wacky those guys are smoking outside I guess.
Happy new year
 
Oil free would be my only concern. Even IR stuff now seems to be made overseas. The form factor of that unit is nice. Not sure how the dual piston setup is longevity-wise.
 
If buying an oil-less compressor ignore my advice regarding a supplement tank(air pig)

The Pistons rings are made from a plastic composite. They aren't meant fir nor can they effectively dissipate the heat from the longer run times an air pig will cause,and will significantly shorten pump life.
I've used supplement tanks on compressors as small as twin tank horse and a half,however they've always had an oil lubricated compressor pump.
We've had various trim compressors that were oil less. Porter cable. Makita. And they are dead,yet my trim compressor that I've had for 12 years,and framed houses and basements with still runs like a dream.
It's funny. This pancake type compressors cost 150 bucks here. The oiled version is closer to 300.
The oil less pumps are dead in 2 years. The oiled pumps I've had have never failed.
So if your planning on using a compressor and seriously exceeding its design limits you might want to consider spending a few extra bucks just to insure adequate component life.
 
Originally Posted By: spasm3
Originally Posted By: zzyzzx
You could paint a car with that tank, you would just have to wait for the tank to refill. Yes, I've dont it (part of a car, anyway).

Exactly what's wrong with your existing compressor?


I'm not sure whats wrong with it. Its a proair compressor 20 years old. I did run it with to long of an extension cord ( i did not realize it pulled 15 amps). It started slowing down and stopped and flipped the breaker. No fuses in it, it does have 2 large capacitors perhaps they are bad. Just figured it was not worth fixing due to its age ( it was not a belt driven compressor either.)


I have a similar situation. My 33 year old Speedaire acted the same way. After initially filling the tank and shutting off, it would blow the breaker trying to restart. The cord was too small and too long. I went to a heavier cord and so far so good. But I'm going to make a custom one even heavier the correct length. I think the problem cropped up because the capacitor is getting weak. I may have to eventually replace it, but that's an easy fix.
 
Well i went out and fiddled iwth it, the cord is fine. I have not tried to use it in a year. I did flip the switch and it ran slowly for about a second then stopped. Its about 28-30 degress f in the garage. Thats the first time i have had it even respond to power on. It has 2 capacitors, one a 40uf and it says protected. I'm now thinking it may be this. The compressor is a 5 hp and the numbers are 8.5 at 40psi and 6.3cfm at 90 ( its a 20g not a 30). I had no idea it was that big of an oilless compressor. I'm going to try replacing the capacitors first and see if it does it. perhaps it was cold enough for it to switch and run a bit.
 
I'd order both and try. Your old compressor is oiled? Have you considered putting in a good syn lube?
 
I ordered both, we will see what happens. It ran slowly for a second and tripped the garage breaker, so maybe it is the starting cap. It is an oil less compressor. It has a large GE 5hp motor. It pulls 15 amps.
 
Originally Posted By: spasm3
What do you guys think of this compressor. Its not belt driven but it does have a nice 7cfm at 40psi and 5.3 cfm at 90psi. I have a non functioal 30g compressor that i might convert into an addition air storage tank. I'm thinking i could paint a small car ( saturn) with the additional 30 gallon tank plumbed in. Its not too big for wheeling out to inflate all my car tires.

http://www.homedepot.com/p/California-Ai...10?N=5yc1vZc9pn


Don't expect long life out of an oil free compressor.
 
I have an oil less cheapo Husky, a 20 gallon one. I rarely let it go to full pressure (150psi?), I usually let it hit 90 and shut it off. I usually am only pumping up tires and don't need more than that.

I did let it run once for busting the axle nuts on my car. Did fine, but talk about making heat.
 
Originally Posted By: Donald


Don't expect long life out of an oil free compressor.


I realize that. But the way i use it, it has lasted. Its 15 years old now. I use it for tires a paint gun , and air nailing. With the tank size it really has not been run a lot, with the exception of the paint gun on occasion. If the capacitors fix it for my $20 then i'll run it till dead. If its still dead then i will buy a nice belt driven oil compressor.
 
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