Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 66 users online :: 6 registered, 0 hidden and 60 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: anello, Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Two stage fridge compressor build

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Unread postAuthor: Gun Freak » Fri Apr 13, 2012 7:32 pm

Wow what a waste :?
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: Fnord » Fri Apr 13, 2012 8:40 pm

You could just use the R22 for the first stage, then swap your original first stage compressor to the second stage. Not a perfect scenario but it'll work if you just want the thing running again.
  • 0

Image
User avatar
Fnord
Major General
Major General
 
Posts: 2244
Joined: Tue Feb 13, 2007 9:20 pm
Location: Pripyat
Reputation: 7

Unread postAuthor: High-PSI » Fri Apr 13, 2012 9:31 pm

Yes, this compressor is an ideal primary stage unit for sure. It is much higher volume.

Matt
  • 0

Exotic E-bike builder, air cannon builder, and overall crack-pot. ;~)

High-PSI
2nd Lieutenant
2nd Lieutenant
 
Posts: 231
Joined: Sat Oct 09, 2010 7:43 pm
Location: Nothern Illinois
Reputation: 0

Unread postAuthor: High-PSI » Mon May 14, 2012 3:59 pm

Hey Guys,

I have some more info for you..........

First, I found that the old style start relays allow the compressor to stall and restart without waiting 60 seconds like the solid state relays do.

Next (and this is something cool I just learned), compressors have an LRA rating. I learned that stands for "Locked Rotor Amps". Most refrigerator compressors are rated at 10 to 16 LRA. Some are above 18. Well, I found a R22 dehumidifier compressor (piston style, not a rotory style) that is rated at 38.6! This is a unit that was given to me last week by a customer of mine. So, I installed it as my secondary and I could not be happier! For one thing, the lower rated compressors would stall out with anything over 40 psi inlet pressure. If I wanted to go above 400 psi output, I had to restrict the inlet pressure to 25 psi. However, with this high LRA rated R22 unit, I can run 80 psi inlet pressure or more without stalling and my fill time is crazy fast now!

I could not be happier. :D

So, if you are looking at multiple compressors, research the LRA rating and get one with a high number, preferably over 20.

Matt
  • 0

Exotic E-bike builder, air cannon builder, and overall crack-pot. ;~)

High-PSI
2nd Lieutenant
2nd Lieutenant
 
Posts: 231
Joined: Sat Oct 09, 2010 7:43 pm
Location: Nothern Illinois
Reputation: 0

Previous

Return to Pneumatic Cannon Discussion

Who is online

Registered users: anello, Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'