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Vance and Jay, It's interesting that you guys would talk about Bimba cylinders today, since that's exactly what I was looking at today. I had seen them before and thought they made a simpler and smaller unit, but didn't know exactly what specs I needed to shoot for. I still don't, but I have a better idea anyways. http://productpage.3dpublisher.net/3dproductpage/QSvalidlogin.asp?GUID=1013539704453 Also Humphrey makes some nice cylinders. http://www.humphrey-products.com/product_catalog/index.ksp http://cgi.ebay.com/Lot-25-Hydraulic-Pneumatic-Cylinders-Festo-Wholesale_W0QQitemZ350148958348QQcmdZViewItemQQptZPneumatic_Hydraulic_Valves_Parts?hash=item350148958348&_trksid=p3286.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50 Szybowski To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] Mushroom Vent CAD Assembly Options Date: Sat, 10 Jan 2009 19:19:02 -0500 From: vbra676539@aol.com Jay, John used to swear AT them occasionally, too, but that's the one I'm ordering. Small cylinder, one inch and a bit stroke. I'm still working on that part with the first valve. I'll publish all that for everyone with the white paper. Vance -----Original Message----- From: Jay K. Jeffries <bottomgun@mindspring.com> To: personal_submersibles@psubs.org Sent: Sat, 10 Jan 2009 5:44 pm Subject: RE: [PSUBS-MAILIST] Mushroom Vent CAD Assembly Options Vance & Brent,
Have a look at Bimba cylinders (they make them in S.S.). John Holt at Harbor Branch use to swear by them.
R/Jay
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
As scarce as the truth is, the supply has always been in excess of the demand.
-Josh Billings
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of vbra676539@aol.com Sent: Saturday, January 10, 2009 6:37 PM To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] Mushroom Vent CAD Assembly Options The three way just vents it through a bronze muffler fitting into the main cabin. Even at 2250 psi, the volume is miniscule. I'll get back to you on the pistons.
Vance -----Original Message----- From: Brent Hartwig <brenthartwig@hotmail.com> To: PSUBSorg <personal_submersibles@psubs.org> Sent: Sat, 10 Jan 2009 2:46 pm Subject: RE: [PSUBS-MAILIST] Mushroom Vent CAD Assembly Options Thanks Vance, What brand and model of single line pneumatic actuator were you looking at using? As it turns out my current assembly only needs 1 to 1.5 inches movement in the acturator. For a single line unit, when the air pressure is released from the actuator, where does that air go? I'm guessing it goes into the cabin unless it's plumbing outside or into a empty tank. Szybowski To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Mushroom Vent CAD Assembly Options Date: Fri, 9 Jan 2009 21:30:55 -0500 From: vbra676539@aol.com Cool graphics. Vance -----Original Message----- From: Brent Hartwig <brenthartwig@hotmail.com> To: PSUBSorg <personal_submersibles@psubs.org> Sent: Fri, 9 Jan 2009 7:35 pm Subject: [PSUBS-MAILIST] Mushroom Vent CAD Assembly Options Greetings SMMOMs, I've been working on a number of different ways to configure my version of a Mushroom vent for the front and rear MBT's on my K-250. This is the one I like the best so far. http://cid-5085d10eb6afe47c.skydrive.live.com/browse.aspx/Plunger%20Assembly http://cid-5085d10eb6afe47c.skydrive.live.com/browse.aspx/Mushroom%20Vent%20Concept%20Main%20Assembly It's mostly made up of 1/4" X 1" 316 SS bar stock, and 1" thick black UHMW. So the goal is for it to be easy and affordable to make and assemble. I made a mock up of the single line, spring loaded pneumatic cylinder Vance was talking about, which I would like to use in this assembly. I will need to trim away some material on the plunger land, and the piece cut out when I made the whole in the FRP MBT, that meets the bottom of the FRP MBT, and then attach them with Seka flex and SS screws. This way I can have a clean look on the top area of the MBT's, and the angle I have to mount the vent on aids in letting almost all the air out. The very small air pockets left I'm thinking will not be an issue. I thought mounting the vent this way would be better for my application, since the knuckle curvature of the heads and the high point of the MBT's are in the same area. I'm interested in your guys thoughts on this concept design. I've uploaded three screen capture clips of the assembly animated on Youtube. The quality is not that great on Youtube, so if anyone would like better quality versions of these clips, let me know off list and I'll send them to you. http://www.youtube.com/watch?v=YvIc3qRRgv8&feature=channel_page http://www.youtube.com/watch?v=S6D0iMgqgzk&feature=channel http://www.youtube.com/watch?v=tdBap4iVoGQ&feature=channel Regards, Szybowski = = |