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| Novacastrian |
 Posted: 11/30/2007 2:40 AM Post subject: |
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Bloody Aussie
Joined: 11 Aug 2007
Posts: 1622
116.11 Spud Bux
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| rna_duelers wrote: | I've ha d a few ales and I feel like replying at this moment.
I agree wiht jack if there isnt any power to start wiht then why bother...It'll end up on a junk heap..power and power and more power!All man eveyr needs and some food,beer,women etc but mainly power or atleast the false feeling of power. |
That has to be a personal best duelers, well done! 
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Last edited by Novacastrian on 11/30/2007 2:41 AM; edited 2 times in total |
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| jackssmirkingrevenge |
| Posted: 11/30/2007 2:40 AM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 7050
11306.91 Spud Bux
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| Quote: | | I've ha d a few ales and I feel like replying at this moment |
True to form I see
| Quote: | | All man eveyr needs and some food,beer,women etc but mainly power or atleast the false feeling of power. |
beer and women give the illusion of power (and, in this case, literary prowess  ) so I think you can narrow it down to just "power" 
I love the way that a forum that's essentially about throwing vegetables gets so philosophical
edit: going back the the original design, perhaps it's not even worth having a piston - maybe just having a spring loaded pin will be enough to retain the marble for enough time to give a reasonable rate of fire...
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| jimmy101 |
| Posted: 11/30/2007 12:36 PM Post subject: |
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Major General
Joined: 28 Mar 2007
Posts: 1776
7533.12 Spud Bux
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Interesting design, and a great animation.
Won't the next round severely choke the air flow into the barrel while the previous round is still in the barrel?
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| jackssmirkingrevenge |
| Posted: 11/30/2007 12:43 PM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 7050
11306.91 Spud Bux
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| Fair comment, and it can't really be helped - maybe a small ramp up to the breech, so that the next round doesn't get to the locking pin unti lthere's enough pressure differential to suck it there?
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| POLAND_SPUD |
| Posted: 11/30/2007 13:41 PM Post subject: |
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Brigadier General
Joined: 13 Oct 2007
Posts: 984
2470.13 Spud Bux
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I seems to me that the next round would be fired before the pin returns to the ready-to-fire-position....
I think that rounds are going to put a lot of stress on the locking pin - I suppose that the pin piston diameter has to be > than diameter of round.... becasue the force pushing the ammo is transfered the loocking pin (pressing it)...
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| potatoflinger |
| Posted: 11/30/2007 13:46 PM Post subject: |
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Seasoned Spudder
Joined: 02 Nov 2006
Posts: 1002
373.55 Spud Bux
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| You might even be able to use a solenoid instead of the pop off-valve, that way you could adjust the rate of fire very easily, and you wouldn't have to worry about the pop-off staying open, but installing a solenoid would be a bear...
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| Antonio |
| Posted: 01/03/2008 13:14 PM Post subject: |
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Captain of Industry
Joined: 13 Aug 2006
Posts: 495
24.52 Spud Bux
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[quote="jackssmirkingrevenge"] the locking pin quote]
Nice work here! I thought of this before but left it because my bb's have seams on ehm so that wont seal of 100%. But yeah with marbles it could work. Great animation btw. I think that piston needs lots o force to keep the marble from rolling out. 100psi = 689475.7 Pa If a marble with diameter of 1 cm is used the F on the marble is: pressure*area= 54 Newtons. Because the ball is round the force that the piston needs to have is about 76 N (if the piston hits part of the marble that is 45degrees to the barrel. So yeah I am not sure where u are ganna get this energy from. The piston is ganna need to have a diameter at least 1.5* the marble to make it work.
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| jackssmirkingrevenge |
| Posted: 01/03/2008 14:04 PM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 7050
11306.91 Spud Bux
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| The pin doesn't have to support the whole force of the marble, just jam it in place, so I don't think it would need *that* much energy.
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