TurboSuper wrote:...

And your point in posting this message is? If it is because of the 'I don't feel like desoldering' comment.... it works and removing the solder without just cutting wires would take quite a bit of time and also risk overheating the LED

I don't feel like desoldering but next time I do an electronic project I will

Eh, it is just parts I had available at the time.... The LED assembly was only rated for 2-3 volts

Edit: and sorry, I know this should probably be in the showcase forum not this one.... I would have pictures today but I slept the entire day due to limited sleep the two days before.

I am going to be modifying the sprinkler valve as soon as I get the parts .

The original post is the result of posting at 3AM.....

Chamber Diameter: 4"
Chamber Length: 2x 5'

Valve: 1" Unmodified sprinkler valve

Valve Control: Small electronic control box with two switches and an LED. The first switch is a DPDT toggle switch that turns on the LED and allows power to flow ...

Well I just got back from playing with my cannon. It was indoors so I was limited on my ammo choices..... Sorry that I don't have any pictures yet, the cannon is still at the building I was playing in.

This is with an unmodified sprinkler valve.

The mid sized nerf darts flew around 100 feet with a ...

What would you suggest for bracing two chambers together?

The gun is configured with the barrel in between the two chambers and it is an interchangable barrel system.

Basically it is configured like OoO (only the barrel is up a bit higher). It is 4" PVC chambers that are 5' long each. they are ...

What would the best way be to stop small ammo (marbles, etc.) from going all the way back in the barrel into the valve, etc. without restricting airflow?

Is there a guide somewhere with what to put in for the Friction parameter in GGDT for say, a marble? (A list of different common ammo could be of benefit

No, I am looking for good examples of good designs :)

Not talking about independent valves, etc. just having multiple chambers rather than one really long piece of pvc..... guess it is actually still just one chamber even if it is multiple lengths of pvc.....

SWAT I think is an example of what I ...

What are cannons that are good examples of multi chamber pneumatic cannon designs? (There is a difference between finding different cannons with multiple chambers, and finding good, reliable designs)

Is there any indicator other than NSF-PW that pipe fittings are pressure rated? Every single fitting over 2" I found except MAYBE one or two at menards and lowes was NSF-DWV or had almost no indication at all (in the case of Sanitary Pipe)

One entire section at lowes had NSF-SD or something like ...

lowes and menards and ace hardware = fail for 2 1/2 inch sch40 lol

ace hardware is one of those places (I got a 2 or 3 foot piece of 2" there a while back).... my only thought was maybe lowes or menards would have pvc with ends that would just work to start

Notice I listed three choices but thanks for the suggestions so far