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

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: saefroch » 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:
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Unread postAuthor: Jabingo19 » 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.
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Unread postAuthor: Gun Freak » 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.
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Unread postAuthor: Mr.Tallahassee » 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.
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Unread postAuthor: mattyzip77 » Sat Aug 06, 2011 12:25 am

This is why they make schedule 80 fittings guys, come on!!!!
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Unread postAuthor: Lockednloaded » Sat Aug 06, 2011 12:30 am

Here's an example of sch 40 pipe plus sch 80 fittings
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Unread postAuthor: saefroch » 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.
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Unread postAuthor: Jabingo19 » 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
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Last edited by Jabingo19 on Tue Aug 09, 2011 11:20 pm, edited 1 time in total.
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Unread postAuthor: Technician1002 » 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.
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Unread postAuthor: Jabingo19 » 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
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Unread postAuthor: mattyzip77 » 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..
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Unread postAuthor: Jabingo19 » 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.
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Unread postAuthor: Jabingo19 » 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
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Unread postAuthor: mattyzip77 » 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)
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Unread postAuthor: Jabingo19 » Thu Aug 11, 2011 9:44 pm

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