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 69 users online :: 4 registered, 0 hidden and 65 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Almost baked a/c compressor.

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

Almost baked a/c compressor.

Unread postAuthor: boyntonstu » Thu Oct 22, 2009 7:06 pm

I have a 600 psi gauge and have gone up to 550 psi many times.

Today, I said, why not go to 600 psi and I got a hot answer.

It pumped to 600 psi an I noticed a strange sound so I quickly vente the pressure and it blew a lot of oily smoke.

Apparently, the compressor got too hot.

I let it cool off and it seems OK.

This compressor is from an 8,000 BTU window a/c.

So for now, with this compressor, 550 psi is the limit.

Does my experience sound familiar?

BTW The 600 psi shot went right though the 5/8" plywood and half way through 3/8" plywood about 7" behind it.

BoyntonStu
  • 0

User avatar
boyntonstu
Brigadier General
Brigadier General
 
Posts: 1039
Joined: Sun Jun 28, 2009 8:59 am
Reputation: 0

Unread postAuthor: cannon monkey » Thu Oct 22, 2009 8:31 pm

how long did u have it running for
i dont have one but when i pump enough with my pump it get really hot
that closes i came to anything like that
  • 0


cannon monkey
Major
Major
 
Posts: 399
Joined: Sun Sep 07, 2008 10:50 am
Location: usa FL
Reputation: 0

Unread postAuthor: boyntonstu » Thu Oct 22, 2009 10:14 pm

cannon monkey wrote:how long did u have it running for
i dont have one but when i pump enough with my pump it get really hot
that closes i came to anything like that


It ran for about 3 minutes and it was at 600 psi.

How high did you go with yours?
  • 0

User avatar
boyntonstu
Brigadier General
Brigadier General
 
Posts: 1039
Joined: Sun Jun 28, 2009 8:59 am
Reputation: 0

Unread postAuthor: jmadden91 » Thu Oct 22, 2009 10:23 pm

cannon monkey wrote:i dont have one


I think he means with a hand pump.

Edit, Stu: Does your ac compressor start up well under load? My fridge compressor struggles above 60psi
  • 0

User avatar
jmadden91
2nd Lieutenant
2nd Lieutenant
 
Posts: 246
Joined: Thu May 07, 2009 6:03 pm
Location: Queensland, Australia
Reputation: 0

Unread postAuthor: boyntonstu » Thu Oct 22, 2009 10:53 pm

jmadden91 wrote:
cannon monkey wrote:i dont have one


I think he means with a hand pump.

Edit, Stu: Does your ac compressor start up well under load? My fridge compressor struggles above 60psi


I use a relief valve and therefore never start under a load.

My compressor would also struggle to start.

How high have you gone with yours?
  • 0

User avatar
boyntonstu
Brigadier General
Brigadier General
 
Posts: 1039
Joined: Sun Jun 28, 2009 8:59 am
Reputation: 0

Unread postAuthor: jmadden91 » Thu Oct 22, 2009 11:10 pm

Only about 300psi, im getting a relief valve soon to, I was just curious as to whether an ac compressor would perform any differently. Cheers mate
  • 0

User avatar
jmadden91
2nd Lieutenant
2nd Lieutenant
 
Posts: 246
Joined: Thu May 07, 2009 6:03 pm
Location: Queensland, Australia
Reputation: 0

Unread postAuthor: POLAND_SPUD » Fri Oct 23, 2009 4:35 am

I suppose that quite a lot of heat is a result of compression heating not the heat produced by the motor winding

so the higher the pressure the more heat is produced
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Sponsored

Sponsor
 


Unread postAuthor: john bunsenburner » Fri Oct 23, 2009 5:26 am

Hmm, you shoudl have a big rig with compressors and have one compressor pump oil through them, that would provide cooling...

OR you find some other way to cool the compressor...

I agree to poland about the compression heating.
  • 0

"Did you ever stop to think that out of the seven deadly sins envy is the only one which doesn't give the sinner even momentary pleasure"-George Will
User avatar
john bunsenburner
Major General
Major General
 
Posts: 1446
Joined: Sun Oct 19, 2008 5:13 am
Reputation: 0

Unread postAuthor: cannon monkey » Fri Oct 23, 2009 12:00 pm

i would say the heat comes from the pressure ( like john and poland ) said but i would also say comes from all the moving parts rubing on other parts
:D
  • 0


cannon monkey
Major
Major
 
Posts: 399
Joined: Sun Sep 07, 2008 10:50 am
Location: usa FL
Reputation: 0

Unread postAuthor: psycix » Fri Oct 23, 2009 1:46 pm

My fridge compressor becomes very very hot after running it for a long time.
I never ran it too hot, because I shut it off when it becomes too hot to touch.

However, this helped cooling it:
Image :D
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'