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Posted: Thu Aug 04, 2011 7:24 am
by saefroch
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:

Posted: Thu Aug 04, 2011 7:46 am
by Jabingo19
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.

Posted: Thu Aug 04, 2011 4:02 pm
by Gun Freak
Sch 80 has a smaller ID than sch 40, not a larger OD. Then it wouldn't fit in fittings.

Posted: Thu Aug 04, 2011 4:35 pm
by Mr.Tallahassee
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.

Posted: Sat Aug 06, 2011 12:25 am
by mattyzip77
This is why they make schedule 80 fittings guys, come on!!!!

Posted: Sat Aug 06, 2011 12:30 am
by Lockednloaded
Here's an example of sch 40 pipe plus sch 80 fittings

Posted: Sat Aug 06, 2011 12:30 am
by saefroch
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.

Posted: Tue Aug 09, 2011 11:15 pm
by Jabingo19
Added brief update of rebuilding damaged parts and pictures of the piston and new bumper in the main post

Posted: Tue Aug 09, 2011 11:20 pm
by Technician1002
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.

Posted: Tue Aug 09, 2011 11:23 pm
by Jabingo19
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

Posted: Wed Aug 10, 2011 6:07 pm
by mattyzip77
What is your piston made of??? Also, you could try cutting up some flip flops, aka shower sandals, for a bumper..

Posted: Wed Aug 10, 2011 10:28 pm
by Jabingo19
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.

Posted: Thu Aug 11, 2011 8:06 pm
by Jabingo19
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

Posted: Thu Aug 11, 2011 9:41 pm
by mattyzip77
The paint job came out titty dude!!! I like it!! What did you end up using for a bumper?? Just curious!!! 8) 8)

Posted: Thu Aug 11, 2011 9:44 pm
by Jabingo19
About an inch of dense rubber foam.