Page 1 of 2

Thursto's Pneumatic Marble Sniper (UPDATED With pics+vid)

Posted: Fri Oct 12, 2007 8:29 am
by Thursto
Hey all, Mr.Russ and I have been working on these cannons for some time now approx 3-4 weeks. I have finally come to a point where it is ready enough to post on here, all I'm missing my barrel, and thats all i need to finish it. I'm Looking at getting a scope for it... http://cgi.ebay.com.au/B-N-30mm-Walther ... dZViewItem

(sorry about the long link)

The Gun:

Chamber: 2" and 25cm Long
Barrel: 1/2" and 80cm/ 1/2" and 30cm long (for the silencer :D)
Valve: Modified 25mm solenoid sprinkler
Valve Actuation: 1/4" GMC Blowgun
Fill point: Metal shrader (freebee :D)
Stock: 3/4" (air does not go into stock)

The Silencer:

Length: 20cm
Width: 2"
Holes drilled into the barrel: 30
Insulation: Fine steel wool

All fittings are PN18 and all of the pipe is PN12 (except for barrel, PN18)

Ill let the pics speak for themselves....

The whole gun (with silencer on the ground)
Image

Modified Sprinkler Valve with GMC blow gun, and fill point
Image

My Stock, with shell holding system
Image

Image

My Silencer (used fine steel wool to insulate)
Image

Comparison against a Lynx deodorant can
Image

Looking down barrel
Image

Looking up barrel
Image

***UPDATE***

I got my barrel today and i sealed up the leak i had. I took some more pictures, and have fired this baby and OMG it has some awsome power, will get vid when my parents arnt home (dont think they realised how powerfull it would be)

Front end of silencer
Image

Looking down barrel with silencer
Image

With silencer attached
Image

Image

Normal barrel
Image

DAMAGE:

I was shooting a buckshot of BB's at a card board box at like 45PSI and went all the way threw, and made massive dents in my wall (rents are going to kill me :( ) Anyway heres the pics.

Entry+exit (might not be able to see the exit)
Image

Wall:
Image

Well heres a video of me shooting it inside (with BB's) and outside with silener and with a marble.


***ANOTHER UPDATE***

Heres another update with more pics, new handle on the barrel, and a thing that stops my barrel from blowing of when tight fit ammo is in the barrel. Heres he pics...

Image

Image

Image

Image

Image

I have got heaps of vids of my gun shooting at wood from 20m + and going threw, but hey are too big to puton you-tube, i can reduce the size slightly but not enough to make a good vid
so i might just put up single vids, and put them all on here.

Yet to come:

Red + Green Dot Scope
15mm Copper barrel (1.2m for $15 aint bad :D) And it fits my marbles perfectly!!! So ill probs seeve it in 3/4" because it doesnt fit in 1/2" or sleeve it in electrical 25mm either one, w/e works best :D.

Tell me what you think, and comments and suggestions are welcome.

Thanks, Thursto

Posted: Fri Oct 12, 2007 9:17 am
by Tom
I canĀ“t see the pictures.

Posted: Fri Oct 12, 2007 9:27 am
by SpudUke5
Very nice, very nice :D , Yet another sniper almost completed. I really like your stock along with the little canisters to hold your marbles. I am anxious to see some damage shots as soon as the barrel comes in 8) .

Posted: Fri Oct 12, 2007 11:49 am
by HaiThar
Very nice job. I like the design. The only thing I would check is that coupler that leads to your silencer/barrel... It looks like DWV...

Posted: Fri Oct 12, 2007 3:16 pm
by origin unknown
It looks very cool. Is that a screw dart I see in the 1st pic? What kind of tape did you wrap the back of the screw with?

Posted: Fri Oct 12, 2007 4:40 pm
by tsb
Nice, it looks like its coming along great. I can't wait till you've got a barrel,
when you do make sure you post some damage shots (See how it goes against corogated iron?).

Cheers, TSB

Posted: Fri Oct 12, 2007 6:55 pm
by Thursto
Lol cheers fr the comments guys, yeah its a screw, well actualy a 11cm bolt, wrapped in paper, and some celotape (dont have ne othertape atm :P) Yeah when the barrel comes in :twisted: i will post damage pics and vids asap. :D

HaiThar: Well it was in the pressure rated fittings section, but even if it is, its not holding pressure :P

Cheers, Thursto

Posted: Fri Oct 12, 2007 7:04 pm
by Marco321
Very nice i like it alot. I cant wait to see damage :twisted:

Posted: Fri Oct 12, 2007 7:31 pm
by Thursto
Lol well srry guys damage shots and vids will have to wait another day :( i found a minor leak that i have just plugged with some supr stregth arildite :D so hopefully tommorrow :D:D cant wait now.

Posted: Sat Oct 13, 2007 1:22 am
by Pyro Ninja
Good job man...looks awesome :)

Posted: Sat Oct 13, 2007 10:52 pm
by Thursto
Hey guys, i fixed the leak from what i can tell ill pressurerise and submerge in water to check.

EDIT: Fixed my pump, but it gets to 75PSI and the pump starts to leak. I have recored a vid of me shooting a buckshot of BB's at a cardboard box, but sadly wentall the way threw and i have like 12 dents in my wall :( rents are going to kill me when they find out.

Ive shot a marble across my gully which is about 350m i recon which is fairly good.

EDIT: Done the video its in the main topic now :D

Cheers thursto

Posted: Sat Oct 20, 2007 8:43 pm
by blind909
wat r u using for wading in ur shellz

Posted: Sat Oct 20, 2007 9:02 pm
by Mr.Russ
cotton wool

message

Posted: Sat Oct 27, 2007 9:16 pm
by to_live
i really like your marble sniper, do you know FPS? you should shread up some chipboard or ply wood with it?

Posted: Sat Oct 27, 2007 9:36 pm
by Novacastrian
Hey thursto that looks awesome, you should paint it though a nice camo design.
I hope you are planning to use higher pressures.
You got a pretty cool dad too :lol:

Well done