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FAR2017

Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Re: FAR2017

Unread postAuthor: Air2theBrain » Wed Nov 22, 2017 5:54 pm

How do you fill yours F1?
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Re: FAR2017

Unread postAuthor: farcticox1 » Wed Nov 22, 2017 6:14 pm

4mm push fitting on the rear right hand side

001 (9) - Copy.jpg
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Re: FAR2017

Unread postAuthor: Air2theBrain » Wed Nov 22, 2017 6:28 pm

Very nice thanks F1. :)

So you just plug that line into your compressor to fill?

When i joined both my tanks and started to fill through the main chamber, i had air going through the barrel so i capped both tanks off...would that mean my trigger is back to front..?
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Re: FAR2017

Unread postAuthor: farcticox1 » Wed Nov 22, 2017 7:53 pm

Sounds like something connected wrong, do a circuit diagram if you can.
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Re: FAR2017

Unread postAuthor: Air2theBrain » Wed Nov 22, 2017 9:31 pm

When filling air was simply rushing through the barrel...so i capped both tanks off and it fired.

The red line is the air line.

Image

Would connecting both chambers effect how the trigger reacts?

When filling if i kept the trigger down it would hold air.

When i went to fire, it wasn't firing on push down..only once released.
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Re: FAR2017

Unread postAuthor: farcticox1 » Thu Nov 23, 2017 6:07 pm

ok, I see what your'e doing now, let me sort that out.

So this is the trigger valve?

SPUD6.jpg
SPUD6.jpg (6.35 KiB) Viewed 336 times


https://www.valvesonline.com.au/3-way-2 ... ring-valve

What you need is a normally open 3/2 valve, I used a normally closed but it has 3 ports so I connect to the 2 open ports and exhaust on firing. I think you have a normally closed 3/2 with a hidden exhaust port.

QEV.jpg


You can use your valve but you will need a self closing disconnect of some kind or a shut off valve if you want to keep it connected to your compressor tank, not so user friendly in my opinion, I will do a diagram.

I think this should work with what you have, the trigger is reversed maybe from what you have set up already, you will need a shut of valve (or a self sealing disconnect if you want to be portable)

QEV 2.jpg


Fill the chamber, with the ball valve open obviously, close the ball valve (or unplug the disconnect, it must seal on both halves or you will have air going everywhere) Press your trigger and it should dump the chamber through the barrel. Job done
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Last edited by farcticox1 on Thu Nov 23, 2017 6:45 pm, edited 2 times in total.
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Re: FAR2017

Unread postAuthor: Air2theBrain » Thu Nov 23, 2017 6:37 pm

Yep thats the one. I've recently swapped it around because the trigger is acting backwards, only when released does it fire, has to be the other way around. :)

EDIT-Trigger was fine...was simply my qev..needs the mod to allow air through to the main tank if tanks are shared or filling from A. I think i got that right :roll:
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Re: FAR2017

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Re: FAR2017

Unread postAuthor: Air2theBrain » Fri Nov 24, 2017 6:55 am

farcticox1 wrote:ok, I see what your'e doing now, let me sort that out.

So this is the trigger valve?

SPUD6.jpg


https://www.valvesonline.com.au/3-way-2 ... ring-valve

What you need is a normally open 3/2 valve, I used a normally closed but it has 3 ports so I connect to the 2 open ports and exhaust on firing. I think you have a normally closed 3/2 with a hidden exhaust port.

QEV.jpg


You can use your valve but you will need a self closing disconnect of some kind or a shut off valve if you want to keep it connected to your compressor tank, not so user friendly in my opinion, I will do a diagram.

I think this should work with what you have, the trigger is reversed maybe from what you have set up already, you will need a shut of valve (or a self sealing disconnect if you want to be portable)

QEV 2.jpg


Fill the chamber, with the ball valve open obviously, close the ball valve (or unplug the disconnect, it must seal on both halves or you will have air going everywhere) Press your trigger and it should dump the chamber through the barrel. Job done


Thanks F1 just saw the updated pics now.

Yes thats the valve i have..i have a slide valve but i didn't like it from the get go...i'll use for something i'm sure.

I did some dry fire tests earlier so its back to normal now.I will get another trigger.

EDIT-Oh i can connect to my compressor now and fire it fine no problems there. :wink:

EDIT2-Yep it has a hidden exhaust port. :wink:
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Re: FAR2017

Unread postAuthor: Ian-B » Sat Jan 27, 2018 2:01 pm

Not sure if its because I have recently returned to the forum, but you seem to make a lot of guns. They are inspiring works of art, from reading your theads am I correct in thinking all your metal shaping and 'machining' is all done without the use of a milling machine? If so you must be incredibaly patient/persistant.
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Re: FAR2017

Unread postAuthor: farcticox1 » Sun Jan 28, 2018 10:21 am

Yes I always have something on the go. And you are correct everything I make is done by hand, I do have a drill press and access to a Tig welder if needed. Patience is a virtue.
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Re: FAR2017

Unread postAuthor: farcticox1 » Sun Jul 08, 2018 10:22 am

Finally did a chrono test on this

With 0.25g @ 160psi = 560fps

0.12g @ 160psi = 732fps :shock:
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