Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
-
far_cry
- Specialist 3
![Specialist 3 Specialist 3](./images/ranks/8_specialist3.png)
- Posts: 317
- Joined: Wed Aug 20, 2008 3:59 pm
Thu Jul 14, 2011 2:34 pm
amazing quality and nicely build, probably you read a lot of topics before you start the build.
what pressure you worked with ?
and video will be nice
foilboy wrote:and the barrel is a Cold Steel .625 caliber Big Bore Blowgun
maybe you meant big bore air gun!!
![Wink :wink:](./images/smilies/icon_e_wink.png)
-
jakethebeast
- Corporal 5
![Corporal 5 Corporal 5](./images/ranks/14_corporal5.png)
![Finland Finland](./ext/rmcgirr83/nationalflags/flags/fi.png)
- Posts: 945
- Joined: Sat Jul 03, 2010 4:20 pm
- Location: Jakes cave
Thu Jul 14, 2011 5:02 pm
in finland we cal it hamp
![Very Happy :D](./images/smilies/icon_e_biggrin.png)
it seals much better than teflon tape nice gun, but i like my bigbore blowgun as a blowgun
![Very Happy :D](./images/smilies/icon_e_biggrin.png)
Est Sularus Oth Mithas
-
Mr.Tallahassee
- Specialist 3
![Specialist 3 Specialist 3](./images/ranks/8_specialist3.png)
- Posts: 364
- Joined: Sun Jul 10, 2011 2:35 am
Thu Jul 14, 2011 6:05 pm
I believe its called pipe dope in here America. Basically a mix of various oils and teflon in a thick goo. It's all I use anymore really. Best sealant ever.
-
foilboy
- Private
![Private Private](./images/ranks/2_private1.png)
- Posts: 11
- Joined: Thu Jul 14, 2011 2:11 pm
Thu Jul 14, 2011 6:15 pm
Thank you far_cry. I definitely did read a LOT of topics on here before building. The brown stuff is pipe joint compound. It's great! I don't know exactly what pressure it was operating at, but I can certainly find out. I was kicking myself for not putting a gauge on the launcher.
Also for anyone considering using a cold steel big bore blowgun as their barrel, if you sleeve it in 3/4 ID 1" OD plastic tubing, it will fit very well inside a piece of 1" SCH 40 PVC pipe
![Very Happy :D](./images/smilies/icon_e_biggrin.png)
-
Zeus
- Staff Sergeant
![Staff Sergeant Staff Sergeant](./images/ranks/20_staffsergeant.png)
- Posts: 1505
- Joined: Tue Oct 27, 2009 7:34 pm
- Location: 'Straya, C*nt
Thu Jul 14, 2011 7:17 pm
Well I'll be the first to recommend a much smaller steel chamber, take this to a few hundred psi and you'll be much happier with the performance.
Otherwise well done, nice to see someone post a good first launcher.
/sarcasm, /hyperbole
-
foilboy
- Private
![Private Private](./images/ranks/2_private1.png)
- Posts: 11
- Joined: Thu Jul 14, 2011 2:11 pm
Thu Jul 14, 2011 7:24 pm
Hello Lieutenant Colonel sir. Thank you for the advice! I'll definitely remember that. I did at one point have a paintball tank as my chamber but the tiny air holes on the tank and tank adaptor (the piece that went from the tank into a standard pipe fitting) were my undoing. I also don't think we have a very powerful air compressor at my house. I swapped out the paintball tank for the PVC chamber to increase airflow in order to maximize the effect of the PSI I did have, and I immediately noticed a major difference.
I definitely appreciate the recommendations, keep them coming!
-
saefroch
- Staff Sergeant 2
![Staff Sergeant 2 Staff Sergeant 2](./images/ranks/21_staffsergeant2.png)
- Posts: 1679
- Joined: Mon Jun 08, 2009 8:47 am
- Location: U.S.A.- See Map
Thu Jul 14, 2011 7:36 pm
Wow. Quite a good first build, but with Zeus; the chamber volume is simply excessive, unless you're using a very high-flow compressor.
How long is that barrel?
-
Zeus
- Staff Sergeant
![Staff Sergeant Staff Sergeant](./images/ranks/20_staffsergeant.png)
- Posts: 1505
- Joined: Tue Oct 27, 2009 7:34 pm
- Location: 'Straya, C*nt
Thu Jul 14, 2011 10:00 pm
Well regarding compressors, can I point you towards
this thread, and
this thread.
They're both quite long, but there's all the information you could ever want about fridge compressors there. And regarding the CO<sub>2</sub> tank, if you add a small chamber in front of the outlet of the tank, you'll notice a marked increase in performance.
I hope that's of some help to you.
Last edited by
Zeus on Thu Jul 14, 2011 11:17 pm, edited 1 time in total.
/sarcasm, /hyperbole
-
Gaderelguitarist
- Corporal
![Corporal Corporal](./images/ranks/10_corporal.png)
- Posts: 580
- Joined: Sat Aug 16, 2008 9:56 pm
- Location: Columbia, MD
-
Contact:
Thu Jul 14, 2011 11:14 pm
You could probably half that chamber and still see no performance drop. Still looks very nice, and I like how you set up your blowgun. You might as well continue the 1" PVC to the end of the blowgun barrel. At first glance I thought it was a harpoon gun
![Laughing :lol:](./images/smilies/icon_lol.png)
so many muchness
-
mattyzip77
- Sergeant 3
![Sergeant 3 Sergeant 3](./images/ranks/17_sergeant3.png)
![United States of America United States of America](./ext/rmcgirr83/nationalflags/flags/us.png)
- Posts: 1249
- Joined: Tue Jun 28, 2011 12:22 pm
- Location: Taxachusetts
Fri Jul 15, 2011 9:20 am
nice build dude!! is your chamber 3 inch and about how long is it?? also, I like the valve. In my opinion this is a awesome gun for your first. Keep it up and bring on the damage pics!!
-
foilboy
- Private
![Private Private](./images/ranks/2_private1.png)
- Posts: 11
- Joined: Thu Jul 14, 2011 2:11 pm
Fri Jul 15, 2011 12:07 pm
Saefroch: The barrel is 4' long. Thanks for the suggestion about reducing chamber size.
Zeus: I hadn't thought of that, but it does make sense now that you mention it. Thanks!
Gaderelguitarist: Thanks! I did at one point have the pvc down the full length of the barrel, but the extra weight of it caused the barrel to droop a bit toward the muzzle. I'm still planning on making a support bracket to go between the chamber and the barrel for improved accuracy.
mattyzip77: The chamber is 2" schedule 80 PVC. I don't really know how long it is. I just eyeballed it.
I will certainly try to get some damage pictures up and perhaps even a video.
Thanks,
Sean
-
mattyzip77
- Sergeant 3
![Sergeant 3 Sergeant 3](./images/ranks/17_sergeant3.png)
![United States of America United States of America](./ext/rmcgirr83/nationalflags/flags/us.png)
- Posts: 1249
- Joined: Tue Jun 28, 2011 12:22 pm
- Location: Taxachusetts
Fri Jul 15, 2011 12:11 pm
also where did you get that valve from and how much did you pay for it? my next pneumatic is going to be like this one in some ways, so any feedback you could give me would be greatly appreciated
-
foilboy
- Private
![Private Private](./images/ranks/2_private1.png)
- Posts: 11
- Joined: Thu Jul 14, 2011 2:11 pm