Return-Path: Received: from [65.54.168.123] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2637836 for flyrotary@lancaironline.net; Wed, 15 Oct 2003 11:55:43 -0400 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Oct 2003 08:55:40 -0700 Received: from 65.137.50.200 by bay3-dav19.bay3.hotmail.com with DAV; Wed, 15 Oct 2003 15:55:40 +0000 X-Originating-IP: [65.137.50.200] X-Originating-Email: [lors01@msn.com] Reply-To: "Tracy Crook" From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EWP - series pumps and wacky ideas Date: Wed, 15 Oct 2003 11:58:13 -0400 Organization: Real World Solutions Inc. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_006D_01C39313.9C277880" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Message-ID: X-OriginalArrivalTime: 15 Oct 2003 15:55:40.0553 (UTC) FILETIME=[C85B8790:01C39334] This is a multi-part message in MIME format. ------=_NextPart_000_006D_01C39313.9C277880 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageTodd & Rusty, my temps don't go below 135F in a long descent but = of course this is in Florida. Could be a different story in colder = climate. I would not expect the engine to run rough even if it got down = to 115F though. The new dual map in the latest EC2 software (as Rusty = has) should eliminate this. I am flying the prototype EM2 and the 4 = unused CHT inputs are very handy for measuring temps at various places. = For instance, I wondered what the return water temp was (after the rads) = so I hose clamped a CHT thermocouple to the waterpump inlet. No pain, = no fabrication or holes to drill & tap. =20 Best place to check for coolant circulation failure is the knock sensor = boss just above the sparkplug (if you have them). A CHT probe works = great here too. I know, I know, when is the EM2 going to be ready..... Real Soon Now. = When the list of things to tweak I make during every flight is down to = zero, it will be done. Making final selection of optical display filter = this week. =20 Tracy=20 Tonight, while descending from 9500' I kept the controller bypassed = allowing the pump to flow at full speed. I found that it cooled off so = that the hot coolant out of the engine was below the bottom scale of the = gauge (<50C) and coolant press was 0psi. Then when I entered the circuit = and applied power, it ran rough until it warmed up a bit.=20 Interesting. Hey Ed, Tracy, Bill (?), anyone else without a = thermostat- what sort of temps do you guys see when making a long low = power descent? =20 Also, where is your pressure sensor Todd? It must be after the = engine, and before the pump. I will probably try to put a sensor = somewhere downstream of the pump, so I can see that it's producing = flow/pressure. =20 ------=_NextPart_000_006D_01C39313.9C277880 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Todd & Rusty,  my temps don't = go below=20 135F in a long descent but of course this is in Florida.  Could be = a=20 different story in colder climate.  I would not expect = the engine to=20 run rough even if it got down to 115F though.  The new dual = map in the=20 latest EC2 software (as Rusty has) should eliminate this.  I am = flying the=20 prototype EM2 and the 4 unused CHT inputs are very handy for measuring = temps at=20 various places.  For instance, I wondered what the return water = temp was=20 (after the rads) so I hose clamped  a CHT thermocouple to the = waterpump=20 inlet. No pain, no fabrication or holes to drill & tap.  =
 
Best place to check for coolant = circulation failure=20 is the knock sensor boss just above the sparkplug (if you have = them).  A=20 CHT probe works great here too.
 
I know, I know, when is the EM2 going = to be=20 ready.....  Real Soon Now.   When the list of things to = tweak I=20 make during every flight is down to zero, it will be done.  Making = final=20 selection of optical display filter this week. 
 
Tracy

Tonight, while = descending from 9500'=20 I kept the controller bypassed allowing the pump to flow at full = speed. I=20 found that it cooled off so that the hot coolant out of the engine was = below=20 the bottom scale of the gauge (<50C) and coolant press = was 0psi. Then=20 when I entered the circuit and applied power, it ran rough until = it=20 warmed up a bit. 
 
Interesting.  Hey Ed, Tracy, Bill (?), = anyone else=20 without a thermostat- what sort of temps do you guys see when making a = long=20 low power descent? =20
 
Also, where is your pressure sensor = Todd?  It=20 must be after the engine, and before the pump.  I will probably = try to=20 put a sensor somewhere downstream of the pump, so I can see that it's=20 producing flow/pressure.    =20
 
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