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| LynyrdSkynyrd |
 Posted: 06/12/2008 18:25 PM Post subject: New Pneumatic: "Coagulation" |
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Sergeant
Joined: 26 Aug 2006
Posts: 93
198.92 Spud Bux
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| starman |
| Posted: 06/12/2008 18:41 PM Post subject: |
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Big Daddio
Joined: 11 Dec 2007
Posts: 3076
7546.07 Spud Bux
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Man, that is a full size shock. Somehow I thought you were talking about a pneumatic hood lifter from earlier. I loved the slow return of the barrel after the recoil.
Even with the recoil system the unit still jumps back some on the ground. I see you're trying to brake it some there...maybe some stakes in the ground or something?
Have you tried shooting anything other than water?
Nice job on this! You've got a couple of bad boy pistons there... 
Last edited by starman on 06/12/2008 18:44 PM; edited 1 time in total |
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| jook13 |
| Posted: 06/12/2008 18:43 PM Post subject: |
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Lieutenant Colonel
Joined: 21 Jan 2008
Posts: 436
88.06 Spud Bux
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| awesome! well made. the recoil system is especially nice. have you destroyed anything yet? gonna get pictures if you do?
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| LynyrdSkynyrd |
| Posted: 06/12/2008 18:51 PM Post subject: |
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Sergeant
Joined: 26 Aug 2006
Posts: 93
198.92 Spud Bux
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| right now all we've been doing is water b/c of the location. but hopefully tomorrow we can get some other shots in
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| VH_man |
| Posted: 06/12/2008 18:54 PM Post subject: |
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Swimmaman
Joined: 09 Dec 2006
Posts: 1846
168.46 Spud Bux
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| wow... i think you could proboably use a bigger barrel on that.... is that 2 inch or is the probable 6inch chambers throwing off my judgement.....
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| LynyrdSkynyrd |
| Posted: 06/12/2008 18:58 PM Post subject: |
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Sergeant
Joined: 26 Aug 2006
Posts: 93
198.92 Spud Bux
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lol yea, that barrel is the shortest we got. It's a 3" barrel by like maybe 6 ft.
and yes the chambers are 6".
we have a golf ball barrel, a 2.5" barrel for tennis balls and beer bottles  , and a 1.25" barrel for steel bearings 
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| VH_man |
| Posted: 06/12/2008 18:59 PM Post subject: |
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Swimmaman
Joined: 09 Dec 2006
Posts: 1846
168.46 Spud Bux
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1.25" steel bearings!!!! damn.... your gonna need something good to shoot that at.......
haha compared to the chambers the barrel looks like 2 inch...... that really puts the size of this cannon into persepctive.
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| Mitchza89 |
| Posted: 06/12/2008 19:05 PM Post subject: |
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Brigadier General
Joined: 08 Jan 2007
Posts: 1058
2260.67 Spud Bux
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 Dear sweet f^%k that's one of the biggest piston gun's I've seen...
I take my hat off to you good sir...
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| Davidvaini |
| Posted: 06/12/2008 19:08 PM Post subject: |
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Airsoft and BBMG Professional
Joined: 29 May 2007
Posts: 1375
1055.46 Spud Bux
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yeah water will defiantly add a lot of recoil to any gun.
looks good and I like the name. The tanks should be called whoppers because they give this beast one giant blood clot (coagulation)
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| potatoflinger |
| Posted: 06/12/2008 19:09 PM Post subject: |
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Seasoned Spudder
Joined: 02 Nov 2006
Posts: 1126
664.09 Spud Bux
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| Wow, that is a nifty cannon you have there! I love how the pressure gauges are mounted in the wood frame, and the recoil system. This could quite possibly be my new favorite cannon on this site!
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| DYI |
| Posted: 06/12/2008 19:27 PM Post subject: |
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Rear Brigadier
Joined: 07 Jul 2007
Posts: 2692
2268.21 Spud Bux
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Now that thing's impressive. It isn't very often that we get a really good launcher posted around here. The two 3" porting valves would be equal to roughly 4.2" of flow. And great job on the pistons. It's nice to see something that doesn't look like it was thrown together in 2 days once in a while.
But please, please get a longer barrel. The current situation is a terrible waste of power. At anything resembling an efficient C:B, this thing should have at least 20' of 3" barrel. 20' of 4" would be just slightly on the long side, but you'd get amazing power out of it.
Also, why is the backplate PVC? Wouldn't the UHMWPE you used in the piston be a safer backplate material? Even ABS or polycarbonate, both of which are dirt cheap, would be a much safer material for that part.
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| LynyrdSkynyrd |
| Posted: 06/12/2008 19:35 PM Post subject: |
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Sergeant
Joined: 26 Aug 2006
Posts: 93
198.92 Spud Bux
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well we used UHMW for the piston for its self-lubricating properties and sometimes its not too friendly for machining, so we used the type II PVC basically b/c it is impact resistant and easier to machine.
...And yes we do have longer barrels. The one thats on there was just for testing.
| LynyrdSkynyrd wrote: | | we have a golf ball barrel, a 2.5" barrel for tennis balls and beer bottles , and a 1.25" barrel for steel bearings |
and each one of those is at least 15 ft.... and they are that short just for ease of transportation.
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| iPaintball |
| Posted: 06/12/2008 19:44 PM Post subject: |
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Colonel
Joined: 04 Mar 2007
Posts: 713
971.42 Spud Bux
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| Amazing job man! This is one of the best cannons I've seen in a while! I cant wait to see what that thing will do with a longer barrel! The recoil absorber spring is a great addition to this beast. Again, excellent work!
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| clide |
| Posted: 06/12/2008 21:11 PM Post subject: |
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Donating Member
Joined: 06 Mar 2005
Posts: 790
2301.84 Spud Bux
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Great job on the gun. That is the best recoil system I've seen on a spudgun.
Although you may consider trying to add some bracing directly behind the tee that the barrel attaches to. With PVC guns it is usually a good idea to support the recoil in the most direct manner possible.
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| LynyrdSkynyrd |
| Posted: 06/12/2008 23:34 PM Post subject: |
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Sergeant
Joined: 26 Aug 2006
Posts: 93
198.92 Spud Bux
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| THats a good point. I'll probably figure out a brace out of some angle iron or something.
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