Homemade Super Soaker Water Blaster

I decided to have a go at building my own super soaker water gun, having googled a fair bit I found out how they worked and built my own out of scrap stuff I already had.

Step 1: What you need

You will need the following things
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The Pump from my other instructable ( www.instructables.com/id/Homemade-WaterAir-hand-pump/ )

Some PVC Pipe

2lt Coke bottle with lid

a 250ml Water bottle with lid

Some balloons

copper tubing

5mm Clear pipe

5mm Black soft pipe

5mm Hose couplers and T-pieces

some scrap wood

a disposable pen

A ton of hot glue

a drill

a utility knife

a hacksaw

cable ties

Comments

[amelaboy]

This is a really informative inscrutable. Thanks I really wanted to make a water gun. Oh, and matoro25 why don't you make it instead of asking all those questions

[matoro25]

How about it's stats? Do you have a test fire video or something? And most importantly, is it reliable?

[junits15]

oh and what does the CPS do?

[n1cod3mus]

to understand the CPS you have to understand the old supersoakers, they used to just pump water in to a chamber to build pressure the problem was when you release, the water pressure becomes less and less as the pressure in the chamber gets less and your water jet that started at 15ft suddenly gets shorter and shorter very quickly. some cheap copies of supersoakers still work in this way. The CPS (constant pressure system) is basically a tough balloon/bladder which the water is pumped into which is inside a hard chamber so that the pressure can build like it did before, but this time you have the balloon/bladder squeezing the water out as well. which means the pressure remains constant until the chamber is empty and your jet is constantly 15ft for the duration of the shot.

[junits15]

so wait, water goes into the balloon, and the pressure is around the balloon, which forces all the water out at a constant pressure because none of the air is escaping. Right?

[n1cod3mus]

the balloon is rubber right, what happens when you blow a balloon up and let go of it without tying it up? the balloon squeezes all the air out and it flys round the room. same thing here just with water the balloon just squeezes the water out thats all.

[junits15]

ohhhhhhhh I see, the balloon doesn't stop pushing water out until its empty.

[junits15]

very nice and informative, with a better camera this would be 10X better :) lol again verrry good job!

[n1cod3mus]

i was doing it with an Iphone 3G in poor lighting conditions indoors :-p

[MFPOSGBCS]

again man....this thing is awesome

[n1cod3mus]

Thanks, it doesnt work too bad for one made of junk, i had some issues with leaks but i just covered them in bathroom silicone

[MFPOSGBCS]

kool