Return-Path: <13brv3@bellsouth.net> Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2633835 for flyrotary@lancaironline.net; Sun, 12 Oct 2003 12:28:05 -0400 Received: from rad ([68.212.14.231]) by imf22aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20031012162829.GIEZ1828.imf22aec.mail.bellsouth.net@rad> for ; Sun, 12 Oct 2003 12:28:29 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: EWP - series pumps and wacky ideas Date: Sun, 12 Oct 2003 11:28:06 -0500 Message-ID: <000001c390dd$d11d33f0$0101a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C390B3.E8472BF0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C390B3.E8472BF0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I do the same thing Rusty, I just run both fuel pumps all the time. If = you run one pump and it fails, the engine will stop running immediately. If = you run an EWP and it fails, your engine won't quit immediately, so you = would have a little time to switch over to the other EWP. Perry Mick http://www.ductedfan.com=20 Hi Perry. If your water pump dies, the engine won't quit immediately, = but you will need to get that second pump on right away. To do that, you = would almost have to have a flow meter that goes into alarm below a certain = amount of flow, and better yet, kicks on the backup pump automatically. =20 =20 Can anyone estimate how long the engine would run at cruise power, with = no water flow, before you boil away lots of coolant, and warp the housings? I'm afraid it wouldn't be more than a minute or so. =20 =20 Cheers, Rusty (I'm NOT going to experiment with no-flow conditions ) =20 =20 ------=_NextPart_000_0001_01C390B3.E8472BF0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message I do the same thing Rusty, I just run both fuel pumps all the = time. If you=20 run one pump and it fails, the engine will stop running  = immediately. If=20 you run an EWP and it fails, your engine won't quit immediately, so you = would=20 have a little time to switch over to the other EWP.
Perry Mick
http://www.ductedfan.com 
Hi Perry.  If your = water pump=20 dies, the engine won't quit immediately, but you will need = to get=20 that second pump on right away.  To do that, you would almost have = to have=20 a flow meter that goes into alarm below a certain amount of flow, and = better=20 yet, kicks on the backup pump automatically. =20  
 
Can anyone estimate how = long the engine would run at cruise power, with no water flow, = before=20 you boil away lots of coolant, and warp the = housings?  I'm=20 afraid it wouldn't be more than a minute or=20 so.  
 
Cheers,
Rusty (I'm NOT = going to=20 experiment with no-flow conditions <g>)  
 

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