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| hunter1992 |
 Posted: 04/14/2007 23:31 PM Post subject: |
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Private
Joined: 04 Apr 2007
Posts: 23
23.01 Spud Bux
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| lithium grease works great for lubing rubber. I used this design on my new cannon and it works GREAT! Thanks alot brain! |
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| pyromaniac |
| Posted: 04/19/2007 18:26 PM Post subject: |
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Brigadier General
Joined: 27 Feb 2007
Posts: 813
890.79 Spud Bux
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I am sorry to kick up this topic but does there need to be a equalization hole? i'm trying to make my first piston with this but i just don't see how you will get air to the chamber unless this is a chamber fill piston.
or I'm just stupid.
nvm i get it now. |
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| origin unknown |
| Posted: 10/09/2007 15:47 PM Post subject: |
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Colonel
Joined: 14 Apr 2007
Posts: 529
890.28 Spud Bux
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| Does the washer in the middle of the piston have 2 holes through it? |
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| Brian the brain |
| Posted: 10/10/2007 13:39 PM Post subject: |
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Brigadier General
Joined: 05 Dec 2005
Posts: 1189
2945.16 Spud Bux
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The back phram allowes air to pass from the pilot into the chamber.If it doesn't it's not done correctly.
I'd like to see hunter's gun!
I never read his post til now... |
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| spanerman |
| Posted: 10/10/2007 13:45 PM Post subject: |
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Lieutenant Colonel
Joined: 17 Sep 2006
Posts: 447
296.08 Spud Bux
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| this is exactly how a brittsh QEV works....its like a check valve and seals perfeclty |
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| Brian the brain |
| Posted: 10/10/2007 13:58 PM Post subject: |
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Brigadier General
Joined: 05 Dec 2005
Posts: 1189
2945.16 Spud Bux
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The back phram allowes air to pass from the pilot into the chamber.If it doesn't it's not done correctly.
I'd like to see hunter's gun!
I never read his post til now...and yes, the middle washer is just for support.
The pham should be kept from turning inside out at pressure it should be supported on the other side by a metal washer like so
pressure----> )I |
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| dongfang |
| Posted: 10/11/2007 6:35 AM Post subject: |
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Lieutenant Colonel
Joined: 27 Aug 2006
Posts: 445
1653.69 Spud Bux
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Hi,
Add oonnnnnne little disk in the pilot end (like the exit disk, just at the opposite end of the tee, and a little smaller), and you have a DFTV valve. If you want to have one.
That disk should probably be the classic o-ring type, as it should pop into the open, and a tapered oversize disk would be difficult to stuff back into place after each shot.
Regards
Soren |
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| schmanman |
| Posted: 10/11/2007 6:45 AM Post subject: |
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blabbering idiot
Joined: 25 Mar 2006
Posts: 1663
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| wow, I've been gone for like amonth and a half, and this thread is still going! |
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| brogdenlaxmiddie |
| Posted: 12/29/2007 14:58 PM Post subject: |
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1st Lieutenant
Joined: 22 Jul 2007
Posts: 273
31.20 Spud Bux
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| Does this clever design work as well, if not better than say other piston valves, specifically ones that use a solid piston? |
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