This will by my submission for mod contest. This is simple and cheap to make, so it will be in the snap category.
My first homemade was another air cannon, very simple in design, and again very war worthy (ask ShaNayNay or HeWhoMods). In my design I use a very high volume pump, which equates to 2 to 4 pumps between shots. But originally I used a large bike pump, which are somewhat expensive. In this write-up i'm going to make a fully pvc version that still has the same great performance, for 25$.
This is my first design, and it works amazingly. Its been through two wars without any problems. It is easily hopperable, and even feeds elites through a wye reliably (as does all of my homemade blasters actually. maybe my wye is magic).
1 1/4 inch pvc
1 inch pvc
3/4 inch pvc
1/2 inch ball valve
1 1/4 inch coupler (times 3)
bushings down to 1/2 inch (I had to stair step down, but if you can find a bushing straight from 1 1/4 to 1/2 it'd be easier)
1 1/4 by 1/2 inch threaded bushing (times 2)
1/2 inch threaded elbow
1/2 inch threaded tee
1/2 inch thread nipple
1/2 to 3/4 threaded adapter (times 4)
1 inch plug
marble (times 2)
small diameter nail (times 2)
: 1/2 inch ball valve
: 1 1/4 inch coupler (times 3)
: 1 inch by 1/2 inch bushing
: 1 1/4 inch by 1 inch bushing
: 1 1/4 inch by 1/2 inch threaded bushing (times two)
: 1/2 inch threaded elbow
: 1/2 inch threaded tee (threaded on all three sides)
: 1/2 inch thread nipple
: 1/2 inch by 3/4 inch threaded adapter (only 1/2 side is threaded, times four)
: 1 inch plug
I know that was a ton of pictures and anyone with a slow connection hates me, but when I was first getting into modding all the parts without an explanation of what they were was confusing. And its easier to explain what I bought with a picture than words.
hammer (in case the pieces don't want to connect well)
table saw/bench saw (the only hard part to the entire project, but you could get by with a file and a LOT of patience)
some way to cut the pipe
drill/ drill press
Front tank section- The ball valve, 1 inch by half inch bushing, 1 1/4 inch by 1 inch bushing, and one of the 1 1/4 inch bushings need to be glued together.
Rear of tank- a 1 1/4 inch coupler, 1 1/4 inch by half inch threaded bushing, and 1/2 inch threaded elbow need to be glued together.
Rear of pump- a 1 1/4 inch coupler, 1 1/4 inch by 1/2 inch threaded bushing, 1/2 inch thread nipple, and 1/2 inch threaded tee need to be glued together.
Here is an exploded view of what I just said, minus the front tank section (I don't think that one is hard to follow)
Now the front and rear tank sections have to be connected with a length of 1 1/4 inch pvc. And a length of pvc attached to the rear of pump assembly.
The lengths can be adjusted to help suit your body (you don't want the pump extension so long you cant reach it). I personally used 15 inches for the tank and 18 for the pump (I'm 6 foot).
Edited by Aeromech, 23 November 2015 - 03:06 AM.