M21E600 semi automatic bullpup marble cannon.
- Crna Legija
- First Sergeant 2
- Posts: 2333
- Joined: Sun Jul 20, 2008 5:14 am
- Location: australia
iv been building this on and off for about 2months, its not finished just yet but fully functional. only needs to be sanded and painted
SPECS
Barrel: 650mm of 20mm electrical conduit, its really loose 1mm each side need a upgrade.
ammo capacity: one 20 round mag and two 10 round clips. all spring fed, homemade springs.
Valve:1/2'' festo qev, 10mm seat.
Pilot Valve: 1/8'' pantball slide valve.
Chamber: 10cm of 3/4'' galvanized pipe. small but 600psi makes up for it .
Operating pressure: 200-600 psi, with my 1l tank i get 20 really good shots 10good shots, then i refill it.
Reload mech: homemade air cylinder to cycle ammo, the receiver is two brass tees with a peace of 20mm copper pipe soldered in it.
thanks to Poland_spud and jsr.
SPECS
Barrel: 650mm of 20mm electrical conduit, its really loose 1mm each side need a upgrade.
ammo capacity: one 20 round mag and two 10 round clips. all spring fed, homemade springs.
Valve:1/2'' festo qev, 10mm seat.
Pilot Valve: 1/8'' pantball slide valve.
Chamber: 10cm of 3/4'' galvanized pipe. small but 600psi makes up for it .
Operating pressure: 200-600 psi, with my 1l tank i get 20 really good shots 10good shots, then i refill it.
Reload mech: homemade air cylinder to cycle ammo, the receiver is two brass tees with a peace of 20mm copper pipe soldered in it.
thanks to Poland_spud and jsr.
- Attachments
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- this is a old pic, of the receiver. it looks the same but i re-made the pvc parts in copper and solderd them in.
- resiver.jpg (31.72 KiB) Viewed 7663 times
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- the red dot sight, i cant get a good pic. its on the macro setting
- red dot.jpg (13.67 KiB) Viewed 7663 times
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- you can see the groove cut in the wood for the trigger to ride in.
- rightftont.jpg (35.71 KiB) Viewed 7664 times
Last edited by Crna Legija on Fri Apr 22, 2011 7:46 am, edited 3 times in total.
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--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
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- POLAND_SPUD
- Captain
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Now that's pretty cool
Can't wait to see it fully painted - I bet it will look a lot like Tavor assault rifle
I've always wondered if they're any good?
Can't wait to see it fully painted - I bet it will look a lot like Tavor assault rifle
It's one of those cheapo chinease reddots, right ?the red dot sight
I've always wondered if they're any good?
Children are the future
unless we stop them now
unless we stop them now
So air ram connected to chamber loads ammo from behind the QEV ?
Does the trigger close the fill valve and pilot in one action ?
Looks good !
I have a cheap red dot, the main issue, is the dot will wander slightly if you move your head. If there is a stock on the gun and the cheek rest is used it is OK.
Does the trigger close the fill valve and pilot in one action ?
Looks good !
I have a cheap red dot, the main issue, is the dot will wander slightly if you move your head. If there is a stock on the gun and the cheek rest is used it is OK.
- POLAND_SPUD
- Captain
- Posts: 5402
- Joined: Sat Oct 13, 2007 4:43 pm
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I don't think that's surprising... they are to behave in that way.... the only question is how well does this feature workI have a cheap red dot, the main issue, is the dot will wander slightly if you move your head.
Children are the future
unless we stop them now
unless we stop them now
A good red dot sight should stay on target even if your head moves, cheap ones drift. So unless you resume the exact same position when looking through the sight, the point of aim will be slightly different.
I tried a $600 EOtech and I definitely didn't drift like my cheapo one does.
I tried a $600 EOtech and I definitely didn't drift like my cheapo one does.
looks awsome.
We need a video of this beast!
Also, what color are you going to stain/paint it?
We need a video of this beast!
Also, what color are you going to stain/paint it?
jackssmirkingrevenge wrote:I wonder... if you put flammable vapours inside a lady... could you get her to diesel?
POLAND_SPUD wrote:Anything is possible with the proper 3-way valve.
- Crna Legija
- First Sergeant 2
- Posts: 2333
- Joined: Sun Jul 20, 2008 5:14 am
- Location: australia
the stock is only 45mm thick, i cbfed sanding it more round and its stronger this way. ill get a damage pics soon and if i can find something to protect my video camera ill have videosAlster370 wrote:The stock seems quite chunky, but very nicely done anyway. I think a caliber of that size at the pressure you intend to operate could do some serious damage. Post a video?
yea, i only got it for look it was only 68 cent and free delivery. the rail i made at work (on the mill wooot) they dont let me use it muchPOLAND_SPUD wrote:It's one of those cheapo chinease reddots, right ?the red dot sight
I've always wondered if they're any good?
yea that how it works, the trigger pilots in when you pull back and fills when you let go, i have a safety that stops it coming back if you engage it.al-xg wrote:So air ram connected to chamber loads ammo from behind the QEV ?
Does the trigger close the fill valve and pilot in one action ?
Looks good !
im going to paint the top 1/3 black to cover all the epoxy putty and walnut stain the rest. then if it looks stupid mate black everything. ill lever the alu riser and rails alonejhalek90 wrote:looks awsome.
We need a video of this beast!
Also, what color are you going to stain/paint it?
thanks for the comments guys
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
This is really cool. About how heavy is the whole thing? Also, what are you using for an air chamber? How is the feeding of paint balls? Everything is so neat and has similar specs I would like to accomplish on my build. Great work !!!
- Crna Legija
- First Sergeant 2
- Posts: 2333
- Joined: Sun Jul 20, 2008 5:14 am
- Location: australia
Hmmmm im not sure id say about 2.5-3kg + 1kg for the fire extinguisher tank, Its a marble cannon i don't use paint balls, it would most probably mush paint balls if i did use them.YEAHADD16 wrote:This is really cool. About how heavy is the whole thing? Also, what are you using for an air chamber? How is the feeding of paint balls? Everything is so neat and has similar specs I would like to accomplish on my build. Great work !!!
In other news i painted the top bit black and will stain the rest tomorrow. expect vids/new pics soon.
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
- jackssmirkingrevenge
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Looking forward to themCrna Legija wrote:expect vids/new pics soon.
If I could make a small aesthetic/safety suggestion, it needs a trigger guard.
What's performance like? I've found marbles that fit very well in 20mm conduit (17mm) so maybe some searching is in order to reduce blowby and optimise velocity.
A diagram of the feed mechanism would also be of interest if you have the time
hectmarr wrote:You have to make many weapons, because this field is long and short life
- Crna Legija
- First Sergeant 2
- Posts: 2333
- Joined: Sun Jul 20, 2008 5:14 am
- Location: australia
jackssmirkingrevenge wrote:Looking forward to themCrna Legija wrote:expect vids/new pics soon.
If I could make a small aesthetic/safety suggestion, it needs a trigger guard.
What's performance like? I've found marbles that fit very well in 20mm conduit (17mm) so maybe some searching is in order to reduce blowby and optimise velocity.
A diagram of the feed mechanism would also be of interest if you have the time
defiantly need a new barrel, im looking. i might be getting 500 15mm ss bbs for free, if so i have a steel barrel id is 15.07mm i would just need to get 1/2'' bsp threads on one end, but i can do that at work.
but the power is pretty good for the barrel, easily puts marbles though 9mm mdf boards.
i made a safety that when you push it in the trigger cant be pushed back, and the trigger is really stiff so i don't think it needs a real guard
- Attachments
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- you should be able to figure the rest out
- internals.jpg (21.58 KiB) Viewed 7280 times
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
- Gun Freak
- Lieutenant 5
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Yes it needs a tank or a compressor to run.
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!