Return-Path: Received: from [129.116.87.170] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 778621 for flyrotary@lancaironline.net; Thu, 10 Mar 2005 15:38:35 -0500 Received-SPF: none receiver=logan.com; client-ip=129.116.87.170; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C525B1.05D55237" Subject: RE: [FlyRotary] Re: Heater valve Date: Thu, 10 Mar 2005 14:37:48 -0600 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69EC08072@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Heater valve Thread-Index: AcUlr2LDQRLdcN/rTjCdL7EIit73cAAAG3iA From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C525B1.05D55237 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Todd, You're probably correct on the costs, but are you sure these are strictly on/off devices? Looking at the url doc Paul referenced, it appears these are infinitely variable valves. If this is the case, it would be more desirable (to me) and worth a few extra ounces (and $). =20 =20 Mark S. =20 =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bartrim, Todd Sent: Thursday, March 10, 2005 2:25 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Heater valve =20 An electrically operated solenoid valve is reasonably inexpensive and not too heavy, but is strictly an on/off valve. An electrically actuated control valve is very $$$$, bulky and heavy. Unless if you know of a source for one that is none of these. I think this is a case where we are about to try to over-engineer a simple device. Better to leave this one to ACRE. Todd Todd, What about the electrically operated valves (see list from Paul). It looks like it would be easier to install in that you don't have any control cable running through the firewall. And you won't have the cable sticking out into the cabin, just a switch. =20 =20 Mark S. =20 =20 =20 ------_=_NextPart_001_01C525B1.05D55237 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Todd,

You’re probably correct on = the costs, but are you sure these are strictly on/off devices?  Looking = at the url doc Paul referenced, it appears these are infinitely variable = valves.  If this is the case, it would be more desirable (to me) and worth a few = extra ounces (and $). 

 

Mark S.  =  

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bartrim, Todd
Sent: Thursday, March 10, = 2005 2:25 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Heater valve

 

An electrically operated solenoid = valve is reasonably inexpensive and not too heavy, but is strictly an on/off = valve. An electrically actuated control valve is very $$$$, bulky and heavy. = Unless if you know of a source for one that is none of these. I think this is a = case where we are about to try to over-engineer a simple device. Better to = leave this one to ACRE.

Todd

Todd,

What about the electrically = operated valves (see list from Paul).  It looks like it would be easier to = install in that you don’t have any control cable running through the firewall.  And you won’t have the cable sticking out into the = cabin, just a switch. 

 

Mark S.  =  

 

 

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