Hello "SpudGunners", I'm Don. Recently our 12 year old discovered a book about "Backyard Ballistics". We both went through it together. Although he has...
Don...Welcome. The list has been a little slow lately. But some of us old timers are still lurking about. Just my 2 cents....without a rifled barrel, a ball...
Welcome Don! I would recomend that you take a look at http://www.xinventions.com/main/spud/home.htm - they've got several different designs and plans to build...
If this is your first, a simple design would be enough fun (although performance won't be as well). Look around sites such as http://spudtech.comor ...
... Good morning and thanks for your reply and input... You are right about the barrel size. I was typing too fast and meant to put down 2.5 inch PVC. My...
Hello Robert, Thanks for turning me onto this website. The plans he offered for sale look really interesting. I've decided on the PAC 5. Even my 12 year old...
We would like to remind you of this upcoming event. SpudGuns Monthly Chat Date: Monday, November 7, 2005 Time: 6:00PM - 12:00AM PST (GMT-08:00) Don't forget...
spudguns@yahoogroups....
Nov 5, 2005 11:42 am
12180
We would like to remind you of this upcoming event. SpudGuns Monthly Chat Date: Monday, November 7, 2005 Time: 6:00PM - 12:00AM PST (GMT-08:00) Don't forget...
spudguns@yahoogroups....
Nov 7, 2005 2:02 am
12181
Good Morning, The plans came for my PAC 5 spud gun (designed by xinventions). You would think that a simple 3" washer would be easy to find...impossible!...
Hi Don, I dropping in here cold.... What kind of material are we talking about? What is it used for? I used 3" rubber washers on the face of my piston to...
... of the ... diameters. ... Thanks for your reply. Huge rubber washers are a great idea for the seal. The plans call for 1/4" sheet neoprene cut to fit. I...
Don, I'm not familiar with the plan you're working from, but it sounds like these washers go on either end of the piston. On my gun I used a 2" shed. 80 ...
The plans call for a 3" sch40 couple sanded down enough to make a sliding fit within 4" sch40 PVC pipe...About 1/8" material will need to be removed from the...
Note that the air going by the washers is near-mach velocity, so the washers need to be substantial, or they will be sucked right out. I've seen examples of...
... Hey MJ, They have a website at www.xinventions.com. Click on Pneumatic Cannons and after the new page loads, click on PAC 5. They responded to my email...
Don, The Axial Accumulator cannons are a cleaner design than the Parallel Accumulators (See Spudguns/files/madjack/pistoncannon) but if the PAC-5 will shoot...
www.xinventions.com http://www.xinventions.com/main/spud/pac5.htm The P.A.C. 5 is a coaxial piston design. Looks like about 1.5" barrel coaxially mounted in a...
MJ...I checked out your reference. That is one cool looking cannon. Is this an example of a co-axial piston? Alan...You checked out my project and say that...
Hello Alan, Thanks for your advice and info about your gun. The source references will be very helpful and I will be curious to hear how your sheet PVC...
Don et al, Let's see if I can find MJ's project. OK I found them. Very nice. The Coaxial term applies to the piston being coaxial with the barrel. Both of...
Don, Looks like you really got people out of the wood work on this one .....I love it! I got started on these things when I saw my first combustion cannon ...
Thanks for your reply. Huge rubber washers are a great idea for the seal. The plans call for 1/4" sheet neoprene cut to fit. I will keep those rubber...
With regard to the plan specifications for the piston of the PAC 5...they are wrong. A 3" couple already fits very nicely into the bore of a 4" inch PVC pipe....
I have a few questions. are the pistons much stronger than just plain diaphragms? Also where can I get a good sheet of neoprene that is good for a diaphragm....
Don, Don't forget to crown the end of the barrel where the piston seats against it for a good seal and a "recoil" spring behind the piston helps it to seal ...
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