FAR2017

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
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farcticox1
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Sun Oct 01, 2017 3:03 pm

Got it finished with some work on the bipod and grip, video and full specs. to follow.

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Bipod can turn slightly left and right
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Last edited by farcticox1 on Mon Oct 02, 2017 4:43 pm, edited 2 times in total.
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jackssmirkingrevenge
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Sun Oct 01, 2017 8:21 pm

Another great build, I love the way she wears her insides on the outside :)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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farcticox1
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Mon Oct 02, 2017 4:36 pm

Came across this piece of 2mm thick gold anodized aluminium, and it almost looks like wood grain :shock: :idea: :idea:
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hectmarr
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Wed Oct 04, 2017 3:58 pm

Very nice work, these things keep the hobby alive. Excellent.
Ideas don't make holes. The weapons yes! ;)
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farcticox1
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Wed Oct 04, 2017 4:51 pm

This is how it all began, as with most of the others I have built.

Get some inspiration :idea:
images.jpg
images.jpg (6.14 KiB) Viewed 2492 times
Make a scale plan (I use Microsoft Visio)
FAR2017 main - Copy.jpg
FAR2017 main - Copy.jpg (31.61 KiB) Viewed 2492 times
Get some parts and see how they fit
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Make some more parts
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Work out pneumatic circuit
air lines 3.jpg
air lines 3.jpg (25.5 KiB) Viewed 2492 times
Put it all together
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It is 700mm(27.5") long.
The barrel is 10mmOD 6mmID stainless steel, 500mm(19.5") long, 800mm (31.5")with extension.
Chamber is 1" Stainless Sch40, 250mm (10") long.
Weight is 11.2Lbs (5Kg)
Main valve is a 5/2 1/2" port air pilot, control valve is 5/2 1/8" port air pilot, trigger valve is 3/2 #10/32 push button momentary spring return.
trigger.jpg
This magazine tube holds 50 airsoft BBs, I will be trying it with steel BBs as well.
800mm.jpg
Last edited by farcticox1 on Sat Jul 14, 2018 12:58 pm, edited 1 time in total.
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farcticox1
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Sat Oct 07, 2017 4:24 pm

Finally got the video done, not very exciting as it all happens inside. Used a 20 round short magazine, have a 40 and a 50 as well. I can see why some people like the bullpup style, with the barrel extension on it is perfectly balanced at the grip, really nice to shoot from the sholder. Pleased with how this one turned out :D

[youtube][/youtube]
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hectmarr
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Sat Oct 07, 2017 7:43 pm

wow !! :shock: work finished, I really like how it shoots, and the neatness of the construction.
Ideas don't make holes. The weapons yes! ;)
Air2theBrain
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Wed Nov 15, 2017 2:08 pm

I knew where your inspiration came from as soon as i saw this beast. :)

Impressed with your top mag tube, thats what i've been wanting to do also. :wink:

Shoots very well nice and accurate. 8)
Air2theBrain
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Sat Nov 18, 2017 7:54 am

Hi, i've just been looking at your FAR2017 again, do you have your main and air chambers connected?
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farcticox1
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Sat Nov 18, 2017 8:12 am

Yes, mainly to increase the volume, I use it with the air supply always connected but only through a 4mm airline, so it tops up the chamber between shots.
20170917_130705.jpg
Air2theBrain
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Sat Nov 18, 2017 8:18 am

Ah awesome...but your using a pilot valve, qev would be no difference?
Air2theBrain
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Tue Nov 21, 2017 8:58 pm

Hi F1...have been reading your thread again, and noticed with your 1" chamber you said you split it into 2..?

What does that do?
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farcticox1
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Wed Nov 22, 2017 5:48 am

Ah sorry, I thought that was what you meant before. I just wanted to get as much air onboard as I could. At least 4X barrel volume. The feed line from the compressor is 4mm OD Polyurethane which is so small you hardly know it's there, BUT it has very low flow so it is mainly there to top up the onboard chamber between shots. Originally it was going to look like this
scale bullpup2.jpg
scale bullpup2.jpg (35.79 KiB) Viewed 2145 times
Air2theBrain
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Wed Nov 22, 2017 6:18 am

Nice thanks.

I noticed your feed lines, do they handle the pressure ok?

Feed lines would be great to eliminate attachments between the trigger and the qev, etc.
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farcticox1
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Wed Nov 22, 2017 5:28 pm

Everything except the PVC chambers are standard pneumatic components, valves, fittings & tubing, I think they are rated at 120psi, I'm using 135psi so I guess there is a good safety factor anyway.
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