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 74 users online :: 3 registered, 0 hidden and 71 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Christmas Present for Max

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 
  • Author
    Message

Christmas Present for Max

Unread postAuthor: MaxuS » Thu Dec 27, 2007 1:04 pm

Well this is my present to myself.
Basically the same as the spudgun I made for my mate Nic, but I did change a couple of things.
Changes:
Piston is lathed from M20 Aluminium Rod and has an o-ring on it.
I knew that the 1/2" QEV was overkill so I replaced it with a 1/4" one.
I used proper 1/4" fittings for the fill and trigger setup because I originally used an 8mm compression tee.
The solder job, I think everyone would agree that it's nicer.
Longer barrel and chamber.
Added a breech-loader.

Specs:
1.7m x 15mm Barrel
1.2m x 22mm Chamber
Breech-Loader
20mm Barrel Sealing Piston
Housed in a 22mm x 15mm x 22mm reduced solder-ring tee.
Piloted by a 1/4" QEV
Piloted by a 1/4" Blowgun (soon to be modded)

And yes, I do realise that there are zip ties on it, but I ran out of Jubilee Clips.

Image
Image
Image
Image
Image
Image
Image
Image
  • 0

User avatar
MaxuS
Sergeant Major
Sergeant Major
 
Posts: 198
Joined: Sun Sep 02, 2007 5:11 pm
Reputation: 0

Unread postAuthor: mopherman » Thu Dec 27, 2007 1:38 pm

loos great. Have you fired it yet? I think the bunched up sealing face may snag up though. Also seems like you get a face full of air from the pilot. Are those 1/2 ball bearing?
  • 0

searching for a modern day savior from another place,inclined toward charity,everyone's begging for an answer,without regard to validity,the searching never ends,it goes on and on for eternity
-Bad religion
User avatar
mopherman
Brigadier General
Brigadier General
 
Posts: 788
Joined: Sat Feb 03, 2007 8:20 pm
Reputation: 0

Unread postAuthor: MaxuS » Thu Dec 27, 2007 1:47 pm

Yup, I've fired it and it's brilliant, I'll stick up a video and some damage shots before long.
The sealing face doesn't seem to snag at all, the fact that it's greased to buggery helps it slip by.
Yeah, I do get a face full of air, but I always find it quite refreshing.
No, the ball bearings are 3/8" so they need a bit of wadding around them.
  • 0

User avatar
MaxuS
Sergeant Major
Sergeant Major
 
Posts: 198
Joined: Sun Sep 02, 2007 5:11 pm
Reputation: 0

Unread postAuthor: ALIHISGREAT » Thu Dec 27, 2007 2:24 pm

wow what a beauty! the only thing i would change is the gap between the breach loader and piston as if it were close it would have better performance because i effect you are shortening your barrel to ~150cm :shock: and i'm sure someone will pont out the 'excessive' pilot volume i will refrain because it makes the gun look better :wink: and what pressure do you use it and? have you managed to hook up you PCP rifle pump?
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: MaxuS » Thu Dec 27, 2007 3:30 pm

The gap is there because it's ergonomical whilst laying down.
Again, the pilot volume is larger thasn I would normally go for, but with the use of a modified blowgun, which I mentioned in the first post, it could vent very quickly indeed, not that it's lacking in power at the moment anyway.
I use it at 120psi, basically because I don't really need more than that to do what I want with it.
Id never pump it up with my PCP Air Rifle pump, only because I've got a perfectly good track pump capable of 160psi.

Slightly off topic:
ALIHISGREAT, when do you hope to be posting any of your cannons on the tinternet, I havn't seen any yet..
  • 0

User avatar
MaxuS
Sergeant Major
Sergeant Major
 
Posts: 198
Joined: Sun Sep 02, 2007 5:11 pm
Reputation: 0

Unread postAuthor: ALIHISGREAT » Thu Dec 27, 2007 4:08 pm

slighty off topic reply: well i have made one phat qev cannon which i haven't finished :oops: and its too cold at the moment to finish it off, i have been busy over christmas so i haven't had the time to finish my 6mm 'sniper' and i have a ghetto combustion not worth posting :)
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: MaxuS » Thu Dec 27, 2007 4:26 pm

Fair enough, make sure you do post it as soon as it's finished.
  • 0

User avatar
MaxuS
Sergeant Major
Sergeant Major
 
Posts: 198
Joined: Sun Sep 02, 2007 5:11 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: cwazy1 » Thu Dec 27, 2007 4:38 pm

i love face fulls of air from a qev.
  • 0

I bought a signature twice because I was an idiot. 600 bux =(

cwazy1
Captain
Captain
 
Posts: 305
Joined: Mon Sep 10, 2007 8:31 pm
Reputation: 0

Unread postAuthor: POLAND_SPUD » Thu Dec 27, 2007 5:42 pm

looks great... try shooting 1/2 ball bearings with his and post some dammage videos or pics...
  • 0

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

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'