Worklog: Schis's 4" Coaxial (update 3)
Posted: Mon Jul 02, 2007 4:08 pm
4" Monster Coaxial (working title)
Alright so I am in the process of building a fairly large coaxial, for under $100. It will be my first attempt at a gun this size or a piston valve. The cannon is going to be meant for distance. I'm aiming for at least 1000 feet with just about anything stuffed in the barrel, and hopefully 2000 feet with some finely tuned projectiles.
Scale Design (v2):
This design is far superior to the first one. First of all, I added a ball valve in front of the quick disconnect, to allow for quick shutoff from the compressor. I also added a quick release safety valve, and removed the 4" adapters. This is where it gets interesting: As you can see, the whole rear coupler removes easily by the way of 4 draw latches. The middle couple is there to make a thicker mounting area, so that i can install the catch on the pvc. (i need to find some of these latches, anyone know where?) This will make loading much better. Also i have added a bumper, which will be attached to the removing assembly. It will be constructed from a big block of gum rubber. Oh yeah and i am going to fill the cap with foam to reduce the pilot volume.
Scale Design (v1):
Specs:
10' x 4" Chamber
10' x 2" Barrel
3" Cap Piston
1" Sprinkler valve actuation
Parts (v2):
1- 10' x 4" Sch 40 PVC Pipe- FREE (Thanks Ewings)
1- 10' x 2" Sch 40 PVC Pipe-
3- 4" Sch 40 PVC Slip Coupler-
3- 4" x 2" Sch 40 PVC Spigot x Slip Bushing-
1- 3" Sch 40 PVC Slip Cap-
1- 2" x 1" Sch 40 PVC Spigot x Slip Bushing-
1- 1" Sch 40 PVC Slip x Male Adapter-
2- 1" x 1/2" Sch 40 PVC Spigot x Thread Bushing-
1- 1" Sch 40 PVC Cross-
_____________________________________________________________
I am getting most of my supplies from Ewings Irrigation:
_____________________________________________________________
Check back here often, I will update this frequently. I am open to any suggestions that anybody has to give.
Alright so I am in the process of building a fairly large coaxial, for under $100. It will be my first attempt at a gun this size or a piston valve. The cannon is going to be meant for distance. I'm aiming for at least 1000 feet with just about anything stuffed in the barrel, and hopefully 2000 feet with some finely tuned projectiles.
Scale Design (v2):
This design is far superior to the first one. First of all, I added a ball valve in front of the quick disconnect, to allow for quick shutoff from the compressor. I also added a quick release safety valve, and removed the 4" adapters. This is where it gets interesting: As you can see, the whole rear coupler removes easily by the way of 4 draw latches. The middle couple is there to make a thicker mounting area, so that i can install the catch on the pvc. (i need to find some of these latches, anyone know where?) This will make loading much better. Also i have added a bumper, which will be attached to the removing assembly. It will be constructed from a big block of gum rubber. Oh yeah and i am going to fill the cap with foam to reduce the pilot volume.
Scale Design (v1):
Specs:
10' x 4" Chamber
10' x 2" Barrel
3" Cap Piston
1" Sprinkler valve actuation
Parts (v2):
1- 10' x 4" Sch 40 PVC Pipe- FREE (Thanks Ewings)
1- 10' x 2" Sch 40 PVC Pipe-
3- 4" Sch 40 PVC Slip Coupler-
3- 4" x 2" Sch 40 PVC Spigot x Slip Bushing-
1- 3" Sch 40 PVC Slip Cap-
1- 2" x 1" Sch 40 PVC Spigot x Slip Bushing-
1- 1" Sch 40 PVC Slip x Male Adapter-
2- 1" x 1/2" Sch 40 PVC Spigot x Thread Bushing-
1- 1" Sch 40 PVC Cross-
_____________________________________________________________
I am getting most of my supplies from Ewings Irrigation:
_____________________________________________________________
Check back here often, I will update this frequently. I am open to any suggestions that anybody has to give.