My Final Gun (Now Revealed)
- rcman50166
- Corporal 2
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- Joined: Sat Jan 19, 2008 7:11 pm
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What has every airsoft player wanted at one point or another in their arsenal? At $1500 (about) it's understandable why. Ladies and Gentlemen, I proudly present the the General Electric M-61 Vulcan Minigun airsoft replica.
Brief Overview
This is a labor intensive ongoing project hopefully to be completed in a month or two. I got the inspiration from Spuddins' M50 project. It has already cost me $200 and it's not even assembled yet! My goal is to cut the cost about 75% and keep it the same gun we all know and love. It uses PVC, wood, iron and steel in it's design. Enjoy because this gun is a toast to spudfiles and all of its members.
Theory of Operation
It is a modified inline vortex block design. When I saw the concept of a vortex gun I was intrigued enough to put the idea to the test. I added a feature in the rotation of the barrels so that when a barrel isn't lined up with the block it builds pressure. This will lead to a near-zero jam, high energy vortex gun. The chamber itself was designed especially for this concept. It has a half harmonic of somewhere between 100 and 50Hz; exactly what rate the gun will be firing at. This results in a vacuum, after the bb has left the block, in the chamber. It is not shown but there is a snake-like curve in the bb-out section of the block. I'll try to get a diagram for that later. However, it has been proven to work with a small proof-of-concept prototype that was short lived. (the jerry-rigging resulted in it's ultimate demise )
Statistics
General Electric M-134 Vulcan Airsoft Minigun Replica Statistics
Compressor
Company Shinn Fu of America
Tailgate Tools Model# W-172
Max Pressure 250 PSI
Max Flow Rate.7 CFM
Duty Cycle (minutes)15/30(on/off)
Hose Length 18.1''
Cord Length 10ft.
Max Amp Draw 12A @ 12V
http://www.shinnfuamerica.com/((lc35ll5 ... spx?ID=212
Air Hose
Company Northern Industrial Tools
Material Type Urethane
Pressure Rating 300 PSI
Hose Length 35ft
Hose I.D. ¼''
http://www.northerntool.com/webapp/wcs/ ... _200267224
Regulator
Company ARO
Port Size: 1/4" NPT female inlet, outlet & (2) 1/8" NPT gauge ports Pressure Range: 5-125 PSIG
Flow Capacity: 13 SCFM (125 PSIG Supply, 100 PSIG Outlet)
Maximum Supply Pressure: 250 PSIG
Operating Temperature Range: 0 to 150 F
Body/Knob: Glass-reinforced composite/acetal resin
Diaphragm/Seals: Buna-N
Mounting: In-line plumbing, panel mount, wall mount
Weight: 0.25 pounds
http://regulatorstore.com/prodinfo.asp?number=86040
Air Gun
Max Pressure 90 PSI
Air Tank
Material Type PVC
Tank Height 24''
Tank I.D. 4''
Tank O.D. 4.5''
Total Atmospheric Volume 2412.74 CI, 1.39626 CF
Total Pressurized Volume (90psi) 14771.87755 CI, 8.54855 CF
Tank Quantity x2
Tank Charge Time (@.7CFM) 12.21221429 min.
Tank Discharge Time 10-20 sec
Vortex Block
Material Wood
Bore Diameter 2in
Max Flow Intake 80CFM
Cycle Rate 50-100RPS
Edit: (2/24/08)
New pics of progress are up. This is the first step toward the minigun.
Brief Overview
This is a labor intensive ongoing project hopefully to be completed in a month or two. I got the inspiration from Spuddins' M50 project. It has already cost me $200 and it's not even assembled yet! My goal is to cut the cost about 75% and keep it the same gun we all know and love. It uses PVC, wood, iron and steel in it's design. Enjoy because this gun is a toast to spudfiles and all of its members.
Theory of Operation
It is a modified inline vortex block design. When I saw the concept of a vortex gun I was intrigued enough to put the idea to the test. I added a feature in the rotation of the barrels so that when a barrel isn't lined up with the block it builds pressure. This will lead to a near-zero jam, high energy vortex gun. The chamber itself was designed especially for this concept. It has a half harmonic of somewhere between 100 and 50Hz; exactly what rate the gun will be firing at. This results in a vacuum, after the bb has left the block, in the chamber. It is not shown but there is a snake-like curve in the bb-out section of the block. I'll try to get a diagram for that later. However, it has been proven to work with a small proof-of-concept prototype that was short lived. (the jerry-rigging resulted in it's ultimate demise )
Statistics
General Electric M-134 Vulcan Airsoft Minigun Replica Statistics
Compressor
Company Shinn Fu of America
Tailgate Tools Model# W-172
Max Pressure 250 PSI
Max Flow Rate.7 CFM
Duty Cycle (minutes)15/30(on/off)
Hose Length 18.1''
Cord Length 10ft.
Max Amp Draw 12A @ 12V
http://www.shinnfuamerica.com/((lc35ll5 ... spx?ID=212
Air Hose
Company Northern Industrial Tools
Material Type Urethane
Pressure Rating 300 PSI
Hose Length 35ft
Hose I.D. ¼''
http://www.northerntool.com/webapp/wcs/ ... _200267224
Regulator
Company ARO
Port Size: 1/4" NPT female inlet, outlet & (2) 1/8" NPT gauge ports Pressure Range: 5-125 PSIG
Flow Capacity: 13 SCFM (125 PSIG Supply, 100 PSIG Outlet)
Maximum Supply Pressure: 250 PSIG
Operating Temperature Range: 0 to 150 F
Body/Knob: Glass-reinforced composite/acetal resin
Diaphragm/Seals: Buna-N
Mounting: In-line plumbing, panel mount, wall mount
Weight: 0.25 pounds
http://regulatorstore.com/prodinfo.asp?number=86040
Air Gun
Max Pressure 90 PSI
Air Tank
Material Type PVC
Tank Height 24''
Tank I.D. 4''
Tank O.D. 4.5''
Total Atmospheric Volume 2412.74 CI, 1.39626 CF
Total Pressurized Volume (90psi) 14771.87755 CI, 8.54855 CF
Tank Quantity x2
Tank Charge Time (@.7CFM) 12.21221429 min.
Tank Discharge Time 10-20 sec
Vortex Block
Material Wood
Bore Diameter 2in
Max Flow Intake 80CFM
Cycle Rate 50-100RPS
Edit: (2/24/08)
New pics of progress are up. This is the first step toward the minigun.
- Attachments
-
- here is the vortex block it prevents jams by only allowing one bb through the rotating barrels at a time.
- minigunvortex.jpg (13.96 KiB) Viewed 6516 times
Last edited by rcman50166 on Mon Mar 10, 2008 4:08 pm, edited 17 times in total.
- jackssmirkingrevenge
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Why the secrecy? This is a spudgun forum, not the Cold War.
hectmarr wrote:You have to make many weapons, because this field is long and short life
- rcman50166
- Corporal 2
- Posts: 697
- Joined: Sat Jan 19, 2008 7:11 pm
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lol you could say it's a tribute to Spudfiles and the knowledge the site has given me. So It's a surprise.
- jackssmirkingrevenge
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awwwwww...
Is it radically different from any other BBMG on this forum? And if so, does it increase power/rate of fire/reliability?
Is it radically different from any other BBMG on this forum? And if so, does it increase power/rate of fire/reliability?
hectmarr wrote:You have to make many weapons, because this field is long and short life
- rcman50166
- Corporal 2
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- Joined: Sat Jan 19, 2008 7:11 pm
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the operation of the gun has been taken ot a new level but the concept has been used before. The fire rate I'd have to say is what improves the most. 50 rps, hopefully. The power typically seen by this concept will also increase. Unfortunately, reliability will suffer.
Last edited by rcman50166 on Sun Feb 17, 2008 10:47 pm, edited 1 time in total.
- jackssmirkingrevenge
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The fire rate I'd have to say is what improves the most. 50 rps, hopefully.
even more BBs to pick up
Besides, 50 rps seems pretty average for a BBMG.
hectmarr wrote:You have to make many weapons, because this field is long and short life
- rcman50166
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Well not if you count the time trying to fire a clogged BBMG. Mine won't. It'll be near impossible. I also think you overestimate the firing rate. The average would seem to be closer to 30 rps. Mine will shoot an entire one of these every minute the trigger is depressed.
Last edited by rcman50166 on Sun Feb 17, 2008 10:58 pm, edited 1 time in total.
- jackssmirkingrevenge
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The power typically seen by this concept will also increase. Unfortunately, reliability will suffer.
You seem a little confused, perhaps a working prototype would have been a better idea before you posted about it. I try and post all my ideas, ridiculous or not, before i built them, because there will always be something you missed and it's good to have your design reviewed by your peers before going ahead with the build.Well not if you count the time trying to fire a clogged BBMG. Mine won't. It'll be near impossible.
hectmarr wrote:You have to make many weapons, because this field is long and short life
- rcman50166
- Corporal 2
- Posts: 697
- Joined: Sat Jan 19, 2008 7:11 pm
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For the gun I'm building this is no easy way to make a proof of concept. It is much easier to build the real thing. Besides the gun I'm making is modeled after a real version using real bullets. Switching to airsoft would make the design more practical if anything. Reasearch has definatley been done if that's your primary concern. I probably spent about 20 hours this week alone researching and designing it. There are 15 diagrams, all scaled and measured. This is probably one of the largest efforts I've ever put into anything in my life. Not just to impress you, the members of spudfiles, but it is a personal achievement that will raise the bar to what is possible for me to do. Also, to show my confidence, I've been averaging $40 a day building it for the last week.
Last edited by rcman50166 on Sun Feb 17, 2008 11:07 pm, edited 1 time in total.
well with that being said I cannot wait to see the end result, and good luck with the project.This is probably one of the largest efforts I've ever put into anything in my life. Not just to impress you, the members of spudfiles, but it is a personal achievement that will raise the bar to what is possible for me to do.
- rcman50166
- Corporal 2
- Posts: 697
- Joined: Sat Jan 19, 2008 7:11 pm
- Location: Bethel, CT
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Well don't get to excited. This project is going to take months to finish. I'm a sucker for punishment...
I wish I had that bank roll to dump into spudguns.....
- rcman50166
- Corporal 2
- Posts: 697
- Joined: Sat Jan 19, 2008 7:11 pm
- Location: Bethel, CT
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Well this is going to use up the last of my "play money". After this you won't being hearing much from me as far as new guns go. So, in a sense this is to cap off my collection with an Uber Krazy Gun as gun number 6. As far as updating I will update the hints to show my progress along with guiding you to guess what the gun will be before I post it.