My First Coaxial... Many Pics AND NEW VIDEO!!!

SpudFiles

Rules

Chat

FAQ

Memberlist

How-To

Other

Private Messages

Random Cannon

Recent topics

» MythBusters and the Eclip
by Ragnarok on 10/08/2008 4:11 AM

» Copper shot gun
by BlackH on 10/08/2008 3:47 AM

» combustion marble gun
by i-will on 10/08/2008 3:23 AM

» Computer case Refrigerato
by Blitz on 10/08/2008 2:50 AM

» Mug Shot Pics!!
by jackssmirkingrevenge on 10/08/2008 2:31 AM

» New to this, where to sta
by ALIHISGREAT on 10/08/2008 1:30 AM

» My Spud gun
by ammosmoke on 10/08/2008 0:26 AM

Donate

Why Donate?

	Hi Guest! As you're not registered, some features could be unavailable. Click here if you want to become a member of SpudFiles
	Username: Password: Log me on automatically each visit

SpudFiles Forum Index » Pneumatic Cannon Showcase » My First Coaxial... Many Pics AND NEW VIDEO!!!

Goto page 1, 2 Next

My First Coaxial... Many Pics AND NEW VIDEO!!!

« View previous topic :: View next topic »

Is this good for a first coaxial barrel sealing piston cannon?

Hell yea!

46%

[ 6 ]

Yes

30%

[ 4 ]

I guess

[ 1 ]

15%

[ 2 ]

This Sucks

[ 0 ]

Total Votes : 13

Author

Message

spudkpi

Posted: 08/09/2006 21:01 PM Post subject: My First Coaxial... Many Pics AND NEW VIDEO!!!

Corporal

Joined: 01 Aug 2006
Posts: 65
137.17 Spud Bux

This is my first Barrel Sealing Coaxial Piston Cannon I have created and i think that I actually had more fun building it than I do firing it. It is very very powwerful for how small it is. The chamber is 2'' and the barrel is 3/4'' and the piston is made from a 1-1/4'' coupler. To relieve the pilot i have used a modded sprinkler valve. The pictures explain it all and any design suggestions or ideas would be greatly appreciated.

http://media.putfile.com/My-Spudgun -----> The Video!

Down Chamber.JPG

Description:

A shot of the barrel and chamber alignment... I worked hard to get the barrel straight without alignment fins of any sort lol...

Filesize:

19.61 KB

Viewed:

963 Time(s)

Overall shot.JPG

Description:

Overall shot of gun...

Filesize:

31.72 KB

Viewed:

48 Time(s)

Sectioned.JPG

Description:

Inside of gun sectioned out with old piston...

Filesize:

25.09 KB

Viewed:

42 Time(s)

Bottom.JPG

Description:

Bottom of barrel and chamber with valve...

Filesize:

35.81 KB

Viewed:

54 Time(s)

Top.JPG

Description:

Top of barrel and chamber...

Filesize:

37.82 KB

Viewed:

38 Time(s)

Old Piston Combined.JPG

Description:

My old piston which sealed with electrical tape...

Filesize:

24.94 KB

Viewed:

42 Time(s)

New Piston Combined.JPG

Description:

My new piston with O-ring (Slot machined on lathe)...

Filesize:

27.43 KB

Viewed:

39 Time(s)

Last edited by spudkpi on 08/10/2006 15:53 PM; edited 4 times in total

Velocity

Posted: 08/09/2006 21:07 PM Post subject:

Brigadier General

Joined: 07 Feb 2006
Posts: 975
8.40 Spud Bux

nice, looks great! Cool

ProfessorAmadeus

Posted: 08/09/2006 21:17 PM Post subject:

Running with Scissors
Brigadier General

Joined: 28 Apr 2006
Posts: 1046
280.78 Spud Bux

very nice gun but how old is the pvc? any damage pics?

spudkpi

Posted: 08/09/2006 21:25 PM Post subject:

Corporal

Joined: 01 Aug 2006
Posts: 65
137.17 Spud Bux

Haha the only older piece of PVC is the chamber only because I had it in my garage... no damage pics yet im gonna take some tomorrow... I can't find any good ammo for 3/4'' barrels? any ideas?

M3NT4L

Posted: 08/09/2006 22:02 PM Post subject:

2nd Lieutenant

Joined: 05 Jul 2006
Posts: 239
201.64 Spud Bux

I like it simple yet efficient. Does the piston seal up good, im thinking of making one like this one but are coaxial sprinkler actuated piston guns as good as the old fashioned sprinkler guns.

djt

Posted: 08/09/2006 22:06 PM Post subject:

Major

Joined: 11 Mar 2006
Posts: 387
863.26 Spud Bux

as good? they are much better if you use a spinkler to actuate it. its kind of like a large homemade version of a sprinkler valve but instead of a diaphram its a piston. and instead of a blowgun actuating it, its a sprinkler valve.

Velocity

Posted: 08/09/2006 22:07 PM Post subject:

Brigadier General

Joined: 07 Feb 2006
Posts: 975
8.40 Spud Bux

paintballs fit PERFECTLY in .75" SCH 120; they fit decent in 3/4" SCH 80 or SCH 80 CPVC; prolly would fit alright in SCH 40 PVC

also, co2 cartridges and C batteries

spudkpi

Posted: 08/09/2006 22:31 PM Post subject:

Corporal

Joined: 01 Aug 2006
Posts: 65
137.17 Spud Bux

Yea paintballs fit quit loosely in this but ill find some ammo.. always open to suggestions. But M3NT4l you said...

Quote:

Does the piston seal up good

it actually slowly leaks into the barrel but i will soon fix it...

MrCrowley

Posted: 08/09/2006 23:43 PM Post subject:

Blizzard of Ozz
Moderator

Joined: 23 Jun 2006
Posts: 6018
2843.20 Spud Bux

spudkpi wrote:

Haha the only older piece of PVC is the chamber only because I had it in my garage... no damage pics yet im gonna take some tomorrow... I can't find any good ammo for 3/4'' barrels? any ideas?

i think the damage pics are gonna be of you Laughing

that pipe looks really old its yellow Shocked

Benny

Posted: 08/10/2006 2:44 AM Post subject:

Brigadier General

Joined: 19 Apr 2006
Posts: 845
144.97 Spud Bux

Why did you put o rings on the piston? Its no a chamber sealing valve.
But that is a very cool piston cannon, post some damage pics Very Happy

MrCrowley

Posted: 08/10/2006 3:09 AM Post subject:

Blizzard of Ozz
Moderator

Joined: 23 Jun 2006
Posts: 6018
2843.20 Spud Bux

Yeah i thought i saw o-rings on there somewhere.How did you cut the groove for them?

Benny

Posted: 08/10/2006 3:26 AM Post subject:

Brigadier General

Joined: 19 Apr 2006
Posts: 845
144.97 Spud Bux

Put the endcap in the lathe and fire away.

killagorrila99

Posted: 08/10/2006 5:18 AM Post subject:

Captain Obvious
Brigadier General

Joined: 25 Jul 2006
Posts: 1103
152.60 Spud Bux

ho dam nice gun, im thinkin bout makin a nother coixil (coaxil???) cannon soon

markfh11q

Posted: 08/10/2006 6:39 AM Post subject:

Magic Dust Man
Donating Member

Joined: 06 May 2006
Posts: 1459
474.31 Spud Bux

killagorrila, don't call him a ho just because he's got a better cannon than you! Wink

Nice cannon though. I like the fact that you used an O-ring on the piston. That gives it much more reliable equalization that you can control by choosing the size of the equalization port. Too bad I still haven't found anybody who can do O-ring grooves for me yet.

spudkpi

Posted: 08/10/2006 10:28 AM Post subject:

Corporal

Joined: 01 Aug 2006
Posts: 65
137.17 Spud Bux

Yea I own a Jet Mini Lathe and I use a chuck on it that tightens around the coupler used for the piston and cuts ideal o-ring grooves. As for the PVC being old it is only about 3 months old so i put my full trust into it. It somehow became discolored. I used an O-ring on it because it slides better and i just created an equalization hole for air to fill the chamber. I do however need help with the seal. I am using a neoprene washer and it slowly leaks into the barrel???

Display posts from previous:

Goto page 1, 2 Next

SpudFiles Forum Index » Pneumatic Cannon Showcase » My First Coaxial... Many Pics AND NEW VIDEO!!!

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum