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 36 users online :: 5 registered, 0 hidden and 31 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Exabot [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

Penu question

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

Penu question

Unread postAuthor: guy_with_a_gun » Mon Oct 16, 2006 9:40 pm

i have a few pneumatic cannons atm, but i still cant answer this, does having the chamber not directly behind the valve make a noticible differnce in power? and wiht that, i also need to find a more sutible souce for air, the car tire compressors arent going past 60psi for me... and i dont really wana buy a 200 dollar compresor either...


plz help :D
  • 0


guy_with_a_gun
Private
Private
 
Posts: 6
Joined: Mon Oct 16, 2006 9:21 pm
Reputation: 0

Unread postAuthor: Tyro » Mon Oct 16, 2006 9:47 pm

in australia you can buy a compressor for about 95 bux, which is us dollrs would be like 75 bux maybe, i'm not usre where your from, but if your australian go to bunnings!


And can someone tell me if there is a difference between PVC glue and Cement, because i went to the hardware store and only found PVC Cement?
  • 0

User avatar
Tyro
Master Sergeant
Master Sergeant
 
Posts: 154
Joined: Sat Oct 07, 2006 1:03 am
Location: The Land of Plenty! (Aus)
Reputation: 0

Unread postAuthor: noname » Tue Oct 17, 2006 10:47 pm

Dude, seriously, have you ever used a bike pump? I can get mine up to 160 psi with mine.

And Tyro, they're exactly the same, just a different name on them.
  • 0

User avatar
noname
Lieutenant General
Lieutenant General
 
Posts: 2699
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA
Country: United States (us)
Reputation: 9

Re: Penu question

Unread postAuthor: tntlly » Tue Oct 17, 2006 10:59 pm

guy_with_a_gun wrote: the car tire compressors arent going past 60psi for me... and i dont really wana buy a 200 dollar compresor either...


how big is your chamber? i had a big chamber and couldn't seem to get past 60 psi either, so i made a smaller chamber and it fills up faster because there's less volume, and it doesn't stop at 60
  • 0

User avatar
tntlly
Corporal
Corporal
 
Posts: 72
Joined: Sun Oct 01, 2006 11:51 pm
Location: Vancouver, WA
Reputation: 0

Unread postAuthor: Tyro » Wed Oct 18, 2006 2:16 am

cool 160 with a bike pump that sounds pretty good!
And thx for the clearing up about cement and glue.
OHH even if it's the same thing, is the liquid still the same consistancy, or is the cement thicker?
  • 0

User avatar
Tyro
Master Sergeant
Master Sergeant
 
Posts: 154
Joined: Sat Oct 07, 2006 1:03 am
Location: The Land of Plenty! (Aus)
Reputation: 0

Unread postAuthor: Hotwired » Thu Oct 19, 2006 4:13 am

  • 0

Last edited by Hotwired on Thu Oct 19, 2006 4:51 am, edited 2 times in total.
User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: Recruit » Thu Oct 19, 2006 4:33 am

I can get industrial compressors for 60 euros here
  • 0

User avatar
Recruit
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 413
Joined: Fri Oct 06, 2006 4:26 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: joannaardway » Thu Oct 19, 2006 7:25 am

I also picked up a bike track pump for about £15 in the UK, which will do 160 psi at a pinch.

8 bar (112-120 psi depending on exact make) compressors can be bought for about £80.

A much meatier 10 bar one costs about £250, but it it provides air much faster, and does more pressure.

To answer the other question, Inline and Over-Under launchers (I'm sure you can work out which is which) display almost exactly the same power in pneumatics, if they use the same "conditions"

Most inline pneumatics are triggered by a ball valve or sprinkler valve, neither of which are hugely powerful, but both have their ports "inline"

Over-under launchers often use more powerful valves such as QEVs or piston valves, which yield a lot more power, but go through a 90 degree bend, so it makes sense to construct them in an over-under rather than inline set-up.

However, if they use an identical valve to an inline, then the difference is miniscule, and is more than made up for by the reduction in length.

However, the "average" over-under will out do the "average" inline, simply because of the more powerful valves used.

There is another launcher type known as co-axial, where the chamber is around the barrel, and these are almost exclusively used with piston valves. Comparing it to the other types, it's most like an over-under.
  • 0

User avatar
joannaardway
Brigadier General
Brigadier General
 
Posts: 949
Joined: Mon Oct 09, 2006 4:57 pm
Location: SW Hertfordshire, England, UK.
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'