2" Golf/Tennis Ball Shoulder Launched Cannon + Damage!

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.
User avatar
saefroch
Staff Sergeant 2
Staff Sergeant 2
Posts: 1679
Joined: Mon Jun 08, 2009 8:47 am
Location: U.S.A.- See Map

Thu Aug 04, 2011 7:24 am

Your piston may not fit in schedule 80 fittings. Take it to the store and check for a fit before you purchase. I see no reason you couldn't put schedule 40 into schedule 80 fittings, if they fit. :wink:
User avatar
Jabingo19
Private 3
Private 3
Posts: 45
Joined: Sat Oct 30, 2010 11:47 am

Thu Aug 04, 2011 7:46 am

Yeah I'm *relatively* certain that schedule 80 fittings have the same inside diameters as schedule 40 but larger OD, if I'm thinking correctly. Then the pipe has a smaller ID same OD.
User avatar
Gun Freak
Lieutenant 5
Lieutenant 5
Posts: 4971
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Been thanked: 7 times

Thu Aug 04, 2011 4:02 pm

Sch 80 has a smaller ID than sch 40, not a larger OD. Then it wouldn't fit in fittings.
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Mr.Tallahassee
Specialist 3
Specialist 3
Posts: 364
Joined: Sun Jul 10, 2011 2:35 am

Thu Aug 04, 2011 4:35 pm

Gun Freak wrote:Sch 80 has a smaller ID than sch 40, not a larger OD. Then it wouldn't fit in fittings.
That's what Jabingo said, just really jumbled and almost hard to follow.
User avatar
mattyzip77
Sergeant 3
Sergeant 3
United States of America
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts

Donating Members

Sat Aug 06, 2011 12:25 am

This is why they make schedule 80 fittings guys, come on!!!!
Go Bruins!!!!
User avatar
Lockednloaded
Staff Sergeant
Staff Sergeant
United States of America
Posts: 1566
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Been thanked: 6 times

Sat Aug 06, 2011 12:30 am

Here's an example of sch 40 pipe plus sch 80 fittings
I love lamp
User avatar
saefroch
Staff Sergeant 2
Staff Sergeant 2
Posts: 1679
Joined: Mon Jun 08, 2009 8:47 am
Location: U.S.A.- See Map

Sat Aug 06, 2011 12:30 am

mattyzip77 wrote:This is why they make schedule 80 fittings guys, come on!!!!
The issue here isn't the ability of the fittings to contain pressure, but their impact resistance. A better bumper would be the best option.
User avatar
Jabingo19
Private 3
Private 3
Posts: 45
Joined: Sat Oct 30, 2010 11:47 am

Tue Aug 09, 2011 11:15 pm

Added brief update of rebuilding damaged parts and pictures of the piston and new bumper in the main post
Last edited by Jabingo19 on Tue Aug 09, 2011 11:20 pm, edited 1 time in total.
User avatar
Technician1002
Captain
Captain
Posts: 5189
Joined: Sat Apr 04, 2009 11:10 am

Tue Aug 09, 2011 11:20 pm

Sched 40 Pipe will fit into sched 80 fittings. My Dragon cannon is built with a combination. The breech is sched 80. The OD is the same. The ID of the pipe is different.
User avatar
Jabingo19
Private 3
Private 3
Posts: 45
Joined: Sat Oct 30, 2010 11:47 am

Tue Aug 09, 2011 11:23 pm

Yeah I couldn't find the schedule 80 parts I needed (specifically the female adapters) so I will end up redoing it in schedule 40 parts, my question for you guys is if you think the new bumper will do a better job versus a tennis ball that was bottoming out with every shot.

Thanks
User avatar
mattyzip77
Sergeant 3
Sergeant 3
United States of America
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts

Donating Members

Wed Aug 10, 2011 6:07 pm

What is your piston made of??? Also, you could try cutting up some flip flops, aka shower sandals, for a bumper..
Go Bruins!!!!
User avatar
Jabingo19
Private 3
Private 3
Posts: 45
Joined: Sat Oct 30, 2010 11:47 am

Wed Aug 10, 2011 10:28 pm

Piston is a solid piece of nylon rod that I machined down with my lathe. And the flip flops thin is an awesome idea, may just end up doing that.
User avatar
Jabingo19
Private 3
Private 3
Posts: 45
Joined: Sat Oct 30, 2010 11:47 am

Thu Aug 11, 2011 8:06 pm

Alright, so this thing is finally completely done. I added a red and black paint job, as well as redoing the piston housing and adding a much better bumper. Needless to say, I am one happy person right now :D
User avatar
mattyzip77
Sergeant 3
Sergeant 3
United States of America
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts

Donating Members

Thu Aug 11, 2011 9:41 pm

The paint job came out titty dude!!! I like it!! What did you end up using for a bumper?? Just curious!!! 8) 8)
Go Bruins!!!!
User avatar
Jabingo19
Private 3
Private 3
Posts: 45
Joined: Sat Oct 30, 2010 11:47 am

Thu Aug 11, 2011 9:44 pm

About an inch of dense rubber foam.
Last edited by Jabingo19 on Thu Aug 11, 2011 10:50 pm, edited 1 time in total.
Post Reply