Need help with compressor

[blazerboy72]

I friend of mine had to move and during his move he left behind a lot of "junk". In this "junk" I found a speedaire 3z492 compressor. All I have is the compressor and flywheel. Does anyone know the specs on this compressor or what size motor I would need to turn it? It appears to be new or close to it with little wear to the paint on the flywheel. I found an 80 gallon tank I am going to put it on if it is worth using.

 

[blazerboy72]

Here are the only specs I can find:
Two Stage, Cast Iron, Compressor Pump, 5 HP, 17.1 CFM Maximum Free Air Flow At 175 PSI Maximum, 2 Cylinder, Oil Capacity 2 Quarts, Pump Speed 685 RPM, Bore Size 4 3/4 x 2 1/2 Inches, Stroke 3 Inches, Motor Sheave Diameter 6.75 Inches, Flywheel Diameter 16 1/2 Inches, W 18, Depth 16 1/2 Inches, Height 22 1/4 Inches, Outlet 3/4 Inch NPT, Mounting Holes 8 3/4 x 5 3/4 Inches

 

[Kev442]

Only, he says.

Well done!

 

[blazerboy72]

So would I need a 1740 rpm 5hp motor and "gear" it down to 685?

 

[78Bird]

The motor drive wheel v/s the Flywheel would gear it down fine. That's only ~3:1.

How big's the flywheel? A good quality 5hp motor would drive that like a champ. NICE find.

 

[blazerboy72]

I havent measured it yet but it appears to be around 16 maybe a little over.

 

[blazerboy72]

It is 16.5".

 

[blazerboy72]

For future reference oven cleaner isnt the best thing to use to clean a compressor, unless you plan on repainting. One coat of oven cleaner and it was down to bare metal. I was planning on keeping it the green, but since it is bare I painted it chevrolet engine orange to match the tank.

 

[blazerboy72]

Looks like I am getting a baldor L1430T to run the compressor. Hopefully I will end up with a decent compressor. Including the compressor, tank, pressure switch, magnetic starter, and motor I have right at $500 in this little project.

 

[blazerboy72]

Picked up my "tank" today. Peoples descriptions can be really misleading. The guy said it was a tank about 5 feet tall and it had stickers on it. Well it turns out it is a complete speedaire, single stage, 5hp. I really only needed the tank so it has been disassembled, cleaned and ready for paint.

 

[JPBirddog]

Blazerboy72,
I know this is a older post but I was wondering if you may still have the 3Z492
compressor. If yes, would you entertain selling it?
Thanks
JPBirddog

 

[The Cobbler]

^^^ Don't hold your breath, blazerboy has not logged in for more than 5 years...