Just picked up this old sears compressor for $5.00. Needs new tank though....

[hwood]

Seeing where I may get a new tank for this. Everything else works like a clock. 1hp, 100psi tank (has a pinhole, also was previously welded), and I was at an estate sale and took it on a flyer. If I can't make it work, toss it, $5.00, who cares, I spend more money on garbage food I wish I didn't get. But if I can find a tank that can accommodate, at a reasonable price, then this could work.

Unfortunately, it has an old top mounted configuration, and I think it might be tough to make work without some heavy legwork. I've been searching and horizontal tanks with brackets welded are pricey, too pricey. Maybe a compressor unit with a bad pump being sold cheap? Maybe, could have a rusted tank itself..... HF has some tanks (and lowes), but they have a handle on top and the air port doesn't seem to line up, and the tank may be a bit small.....

IDK, any ideas? Anyone know of a supplier that might have something like this? Even worth it?

So this is my model, just took pics a few minutes ago.

 

[lilredex]

Too good to throw away, especially if that is a genuine 2 HP motor. I'd just keep looking, something will turn up.

Here is another...

https://www.kijiji.ca/v-view-details.html?adId=1396925525

 

[hwood]

Too good to throw away, especially if that is a genuine 2 HP motor. I'd just keep looking, something will turn up.

Here is another...

https://www.kijiji.ca/v-view-details.html?adId=1396925525

No, mine's just a 1hp (listed on the motor), 6.4cfm at 40 psi (says on the tank). So it's the cheaper version of the one pictured.

 

[hwood]

Just updated with pics from my exact model.

 

[lilredex]

Here is another, a tank for $30. If only you were closer.

https://www.kijiji.ca/v-power-tool/...or/1396998992?enableSearchNavigationFlag=true

 

[hwood]

Here is another, a tank for $30. If only you were closer.

https://www.kijiji.ca/v-power-tool/...or/1396998992?enableSearchNavigationFlag=true

Nice. I'm in az, where stuff like this (like the old sears I picked up) is fairly rare. I'd imagine in that area there's a lot of old vintage stuff for good prices, supply n demand n all that.

 

[BFBOB]

746 watts/hp
yours is 2047W (115V x 17.8A), so yes, it's really 2 hp.

There's a derating factor since the motor is an inductive load - getting the exact hp equivalent is tricky - it's always less than the V x A - the details escape me.

 

[hwood]

746 watts/hp
yours is 2047W (115V x 17.8A), so yes, it's really 2 hp.

There's a derating factor since the motor is an inductive load - getting the exact hp equivalent is tricky - it's always less than the V x A - the details escape me.

Gotcha, shame I have never welded, at least since high school. Either way I don't have equipment, or I'd take off the top bracket n spot weld it to a new tank n lengthen the hole for the air intake if need be n be done with it.

 

[alwaysFlOoReD]

Speaking of high-schools, perhaps one near you has a shop-class where a student could practice on your equipment.

 

[The Cobbler]

nice find!
you could always cut the mounting plate off that compressor & weld or bolt it to another mount plated to keep the same configuration

 

[hwood]

nice find!
you could always cut the mounting plate off that compressor & weld or bolt it to another mount plated to keep the same configuration

I thinking along the bolting lines....I'll be on the lookout, see what I can come up with. At the risk of explosion, I did run it n fill the tank up once, runs like a clock.

 

[hwood]

I know this tank was a 100psi unit, but could I buy another tank that can handle heavier duty and use this pump n motor? I know there's a sensor that stops pumping air before 100psi.

 

[The Cobbler]

higher pressure tank is OK, but you might overload the compressor & motor by wanting more pressure out of it. most pressure switches are adjustable . you could probably bump it up 10 or 15 lbs without an issue

 

[hwood]

higher pressure tank is OK, but you might overload the compressor & motor by wanting more pressure out of it. most pressure switches are adjustable . you could probably bump it up 10 or 15 lbs without an issue

If I end up finding another tank, I'll just keep it as is. So should all of the air input ports be the same? Or might I need an adapter or a couple adapters?

 

[The Cobbler]

be prepared to re- do some plumbing & electrical

 

[Packard V8]

Sears must have gone really cheap with their tank supplier in that time. I picked up the same unit with a pinhole in the low point of the tank. I bent and welded a 1/8" plate over that area and then welded a bung for a draincock. (Yeah, yeah, we know, never, ever weld on a pressure vessel. Well some of us do and live to tell about it. Kids, don't try this at home. No warranty expressed or implied. Your results may vary.)

jack vines

 

[Marctrees]

Rather than the complications and possible dangers of welding to a tank, consider making a cart, w pump/motor on top, and a flex hose feeding tank below.

Marc

 

[Marctrees]

Could re use the old wheels,... just keep CG low as possible.

TSC "Hydraulic hose" ready to go in diff lengths... all terminated, like 1/2" NPT... under $15 for your job.

Marc

 

[hwood]

Could re use the old wheels,... just keep CG low as possible.

TSC "Hydraulic hose" ready to go in diff lengths... all terminated, like 1/2" NPT... under $15 for your job.

Marc

Yeah I thought about that. Save myself some time and aggravation looking for a tank that would work. Maybe even a quick release so I can carry the tank somewhere if needed.

 

[hwood]

I'm looking up what I can do with this model.... Not much.... Not sure if it's worth the trouble for airing some tires n maybe light nailing. Anything else I can get away with (air tool, pa it nt spraying)?

 

[theoldwizard1]

Sears must have gone really cheap with their tank supplier in that time.

Not true ! The old green compressors will run forever as long as you drained the tank daily.

I used to sell those things. The pump from the 1HP is the same as the one from the 2HP. Obviously the pulley (motor likely) is different.

The 3HP had a larger pump.

 

[theoldwizard1]

I'm looking up what I can do with this model.... Not much.... Not sure if it's worth the trouble for airing some tires n maybe light nailing. Anything else I can get away with (air tool, paint spraying)?

The ratings on the tank are for the 1HP version so the SCFM (CFM) are wrong. The only thing the 2HP will NOT do is sand blast. You can run a sander or die grinder but NOT continuously (you have to stop every few minutes and let it catch up).

Painting is questionable, based on the gun you are using. Probably would not work well with a newer HVLP gun.

 

[mustang5.0]

I have the same setup except mine has a 3.5 horsepower gas engine. Was my father's.

 

[hwood]

The ratings on the tank are for the 1HP version so the SCFM (CFM) are wrong. The only thing the 2HP will NOT do is sand blast. You can run a sander or die grinder but NOT continuously (you have to stop every few minutes and let it catch up).

Painting is questionable, based on the gun you are using. Probably would not work well with a newer HVLP gun.

I know someone said the amps makes for a 2hp motor. But maybe the compressor is only good for a 1hp? It only fills the tank to 100psi then stops.

 

[notlob]

I had a version of that compressor. I wouldn't recommend putting any time or $$ in to it. The low CFM and the max 100 psi positions it at just the edge of being usable for an impact (with lots of pauses waiting for the compressor to catch up), and unusable for most other air tools.

Save or sell the motor; pick up better compressor off Craigslist for $50-$150 and you'll come out far ahead of trying to replace the tank on that one.

 

[notlob]

BTW - for those who claim the motor is a 2hp, despite being labelled 1hp by Emerson Electric, I suggest doing a bit of research on motor efficiency, single phase vs 3 phase motors, etc.

From https://www.engineeringtoolbox.com/elctrical-motor-full-load-current-d_1499.html

As a "rules of thumb" amps horsepower rating can be estimated to

115 volts motor - single-phase : 14 amps/hp
230 volts motor - single-phase : 7 amps/hp
230 volts motor - 3-phase : 2.5 amps/hp
460 volts motor - 3-phase : 1.25 amps/hp

 

[hwood]

BTW - for those who claim the motor is a 2hp, despite being labelled 1hp by Emerson Electric, I suggest doing a bit of research on motor efficiency, single phase vs 3 phase motors, etc.

From https://www.engineeringtoolbox.com/elctrical-motor-full-load-current-d_1499.html

As a "rules of thumb" amps horsepower rating can be estimated to

115 volts motor - single-phase : 14 amps/hp
230 volts motor - single-phase : 7 amps/hp
230 volts motor - 3-phase : 2.5 amps/hp
460 volts motor - 3-phase : 1.25 amps/hp

Ok so this sounds correct from what I've been thinking. I'll cry about the $5.00 later.

 

[n8n]

My dad has the same compressor... and I threw out a tank that would have worked for you a couple years ago, but I'm way too far away

 

[hwood]

My dad has the same compressor... and I threw out a tank that would have worked for you a couple years ago, but I'm way too far away

Yeah it's kind of a shame because it's a vintage unit and I like the older stuff, but not a while lot I can do, short of spending $120 on a proper tank, then making a cart for it. Or welding, but I don't have a welder, and if I did, I could buy and cheap tank and weld on a drain and another port to pump air in.

 

[Marctrees]

Well, I am an amateur welder...

But it seems I have read posts in threads by way more experienced guys that explain the potential problems of non pro welding on pressure vessels.

That's why ... trying to keep it simple...

And not get into possible Life Safety situations, ...

Do not talk about welding ANYTHING ON a tank.

Hence my post about keeping motor/ pump separate and using cheap TSC hose.

Marc

 

[hwood]

Well, I am an amateur welder...

But it seems I have read posts in threads by way more experienced guys that explain the potential problems of non pro welding on pressure vessels.

That's why ... trying to keep it simple...

And not get into possible Life Safety situations, ...

Do not talk about welding ANYTHING ON a tank.

Hence my post about keeping motor/ pump separate and using cheap TSC hose.

Marc

That's what I meant about not having, as in not experienced as well. If I were, n if I had, I'd do it.

 

[Stuart in MN]

Tubalcain / MrPete222 on Youtube had a similar air tank that had a pinhole. He cut the tank in half to show how widespread the corrosion was. To mix metaphors, the pinhole was just the tip of the iceberg...the metal was more or less paper thin for a wide area around the hole, and most of the bottom of the tank had pretty heavy corrosion.

 

[hwood]

Tubalcain / MrPete222 on Youtube had a similar air tank that had a pinhole. He cut the tank in half to show how widespread the corrosion was. To mix metaphors, the pinhole was just the tip of the iceberg...the metal was more or less paper thin for a wide area around the hole, and most of the bottom of the tank had pretty heavy corrosion.

Yeah no point in that nonsense, I'm seeing a garbage can in this heaps future.

 

[The Cobbler]

I watched that Tubalcain video too . eye opener . and the top of the tank was clean bare steel and not even any surfface rust

 

[hwood]

I watched that Tubalcain video too . eye opener . and the top of the tank was clean bare steel and not even any surfface rust

Yeah that's because of not emptying the tank n water sitting on the bottom. That's why when I buy a compressor I'm going to buy a new one

 

[a40lover]

I have a speedair upright with a bad pump and no motor you can have. Should be easy fix.

 

[gtcs]

I have that same compressor, with a 220v 2hp. Was my great granddads. Still runs and no leaks in the tank, yet. For the record it won't run a DA sander or air file for more than a minute, and if you move fast even an air ratchet out runs it.

Mine is in the front garage on tire and basketball duty. I have been tempted to mate it to my Kobalt 26 gallon that the piston broke on, but I'm not sure how that would work out.

If I was closer I would give you the $5 just to have spare parts for mine

 

[ken w.]

I've had 2 of these. Gas & electric. Mine were made by Speed Air. That might not be the correct spelling. They were good unit's but I just wore them out.