X-Virus-Scanned: clean according to Sophos on Logan.com From: "Ernest Christley" Received: from nm17-vm4.access.bullet.mail.gq1.yahoo.com ([216.39.63.105] verified) by logan.com (CommuniGate Pro SMTP 6.0.10) with ESMTPS id 7240273 for flyrotary@lancaironline.net; Tue, 28 Oct 2014 11:31:41 -0400 Received-SPF: none receiver=logan.com; client-ip=216.39.63.105; envelope-from=echristley@att.net Received: from [216.39.60.167] by nm17.access.bullet.mail.gq1.yahoo.com with NNFMP; 28 Oct 2014 15:31:05 -0000 Received: from [216.39.60.253] by tm3.access.bullet.mail.gq1.yahoo.com with NNFMP; 28 Oct 2014 15:31:05 -0000 Received: from [127.0.0.1] by omp1024.access.mail.gq1.yahoo.com with NNFMP; 28 Oct 2014 15:31:05 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 170528.43021.bm@omp1024.access.mail.gq1.yahoo.com Received: (qmail 92988 invoked by uid 60001); 28 Oct 2014 15:31:04 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1414510264; bh=hVmLBLZYcTXjmTI82qdVvfN/R1d+Oa1kCyzmYQMQ7bI=; h=References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=37ggRADxo0eSeGd+HN4rC/F3YnpeRGrgGfRcK3JuE6+YjsE5HWnoDBNjq4vCclVy47YbopsqHElYpHAh8kWhtv35CV9c1jwjCzFX7d8noQy8KVVabCGyb5hsT6mblAWmlv/TlvtUMDEYD8vZz6735UTc1L8ju0boxb+MTYhvpZo= X-YMail-OSG: IY91z3sVM1nsgfgtyEbI4EmEKTVzCxCjN4mWxEaYjtfgo64 wzze4m5SZKfKqcy9h9Jr56GWQoNdNxZxiqk.TvD4s8knqAU4KTrFr7aOhCf0 MyX6JxhWad.lVZojPwfKQjqM5JH7bM2df2rb6_s6NiUD3coRMqhK1qhDIHKF n_dIryqi0KbuYpEk.tj2scChzTPIdgxIb42nOIemjwOTnRfpw0ZjKVA3JYV. HEEPSay6Oe58km0i3kmGfMeOeA4Ah_jpWu3.u7MK7u7P4aNjumfUO95qKRdA TvUCQkwMBX2121H1qvNcOcV.26AlH1I0NpUrXzsvMJOIpjd6BXHUQxWRy5hv N9gjfRGuNuQH4HR6mRpasr.qgQmYetx1DNL_tVfqEB_TAcjgShhFhtOd1NDV ETLjvCsoKhT.carJDIcEtb37e5vdmCZWSgThu.d3_dguUGMVEKBMAZFHWys5 34OXk0Mz5RYFRvCmpH284LSJS72L4GUHPguH_bXB0jeD4sRgnBdtMfbTDut7 vYsPudpA_iR5kwGFuVU_vF.2kroX44LK3r1_qlF1_D35P_KkFqh61zK0gFVb 9A4z5Y5DzNkrwqLlaeXzg2ZkVBRs2amJIGODxa9KLXMpojiUgc2VkYYkSHbA MMyvqQAhcqs6ComofDQBiMWKKmrffNXaucZ01.l9RSxw1SiMNIJiUdZ8hDdb xcbnIAwJwnx0xQ3BqrQ8ElsVT0QFvO_axUDFXn39N Received: from [70.39.176.68] by web181601.mail.ne1.yahoo.com via HTTP; Tue, 28 Oct 2014 08:31:04 PDT X-Rocket-MIMEInfo: 002.001,U3RlcGhlbiwgd291bGQgeW91IGxpa2UgdG8gcmVjb3ZlciB5b3VyIGludmVzdG1lbnQgaW4gdGhlIFBvbGxhY2s_CgoKCk9uIE1vbmRheSwgT2N0b2JlciAyNywgMjAxNCA2OjM5IFBNLCBTdGVwaGVuIEl6ZXR0IDxmbHlyb3RhcnlAbGFuY2Fpcm9ubGluZS5uZXQ.IHdyb3RlOgogCgoKU2FybyBpcyByaWdodC4KSSBoYXZlIGEgc2l4IHBvcnQgcG9sYWsuIEkgdGhpbmsgdmFyeWluZyB0aGUgcG9sYXJpdHkgdG8gdGhlIG1haW4gc29sZW5vaWQgcG9zaXRpb25zIHRoZSB2YWx2ZSBzZWFscyBvbmUgd2F5IG9yIHQBMAEBAQE- X-Mailer: YahooMailWebService/0.8.203.733 References: Message-ID: <1414510264.8617.YahooMailNeo@web181601.mail.ne1.yahoo.com> Date: Tue, 28 Oct 2014 08:31:04 -0700 Reply-To: Ernest Christley Subject: Re: [FlyRotary] Re: electric fuel selector valves To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="1128108019-2131941261-1414510264=:8617" --1128108019-2131941261-1414510264=:8617 Content-Type: text/plain; charset=us-ascii Stephen, would you like to recover your investment in the Pollack? On Monday, October 27, 2014 6:39 PM, Stephen Izett wrote: Saro is right. I have a six port polak. I think varying the polarity to the main solenoid positions the valve seals one way or the other. Internal switches de-energise the solenoid and provide feedback of selected ports. I chose not to use it in the end opting for a more fail safe setup. Steve Izett On 28 Oct 2014, at 5:55 am, Ernest Christley wrote: > >This is the type that I'm referring to: > > > >http://products.pollakaftermarket.com/item/fuel-selector-valves/light-truck-6-port-motor-driven-valve/42-302 > > > > >On Monday, October 27, 2014 5:50 PM, Ernest Christley wrote: > > > >Is anyone familiar with electric fuel selector valves as used in automotive applications. I'm trying to figure out how they operate. Do they select one line when power is applied to a solenoid type plunger, and then the other line is selected when power isn't applied? Or does a pulse of power switch them back and forth? If they maintain the currently selected tank when power is absent, it seems to me that this could remove fuel lines and a leak prone selector valve from a lot of cockpits. Furthermore, the 6 port models look like they could be plumbed easily to handle return lines. > > > > > --1128108019-2131941261-1414510264=:8617 Content-Type: text/html; charset=us-ascii
Stephen, would you like to recover your investment in the Pollack?


On Monday, October 27, 2014 6:39 PM, Stephen Izett <flyrotary@lancaironline.net> wrote:


Saro is right.
I have a six port polak. I think varying the polarity to the main solenoid positions the valve seals one way or the other.
Internal switches de-energise the solenoid and provide feedback of selected ports.
I chose not to use it in the end opting for a more fail safe setup.

Steve Izett
On 28 Oct 2014, at 5:55 am, Ernest Christley <flyrotary@lancaironline.net> wrote:

This is the type that I'm referring to:

http://products.pollakaftermarket.com/item/fuel-selector-valves/light-truck-6-port-motor-driven-valve/42-302


On Monday, October 27, 2014 5:50 PM, Ernest Christley <flyrotary@lancaironline.net> wrote:


Is anyone familiar with electric fuel selector valves as used in automotive applications.  I'm trying to figure out how they operate.  Do they select one line when power is applied to a solenoid type plunger, and then the other line is selected when power isn't applied?  Or does a pulse of power switch them back and forth?  If they maintain the currently selected tank when power is absent, it seems to me that this could remove fuel lines and a leak prone selector valve from a lot of cockpits.  Furthermore, the 6 port models look like they could be plumbed easily to handle return lines.






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