Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 814183 for flyrotary@lancaironline.net; Mon, 21 Mar 2005 14:09:38 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf23aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050321190849.TWF24632.imf23aec.mail.bellsouth.net@rd> for ; Mon, 21 Mar 2005 14:08:49 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: BMW and EWP Date: Mon, 21 Mar 2005 13:08:55 -0600 Message-ID: <00bb01c52e49$6d7c4c40$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00BC_01C52E17.22E1DC40" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_00BC_01C52E17.22E1DC40 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable So, to me, the answer to your question (The real question is how much = flow do we need?) is the engine within its max operating temps. This is why = I installed "CHT" probes on my engine, to monitor the metal temps in the vicinity of the plugs. =20 =20 Hi Mark, =20 You've probably mentioned this before, but can you refresh my memory as = to where you put these probes? I'm guessing you could just use the ring = type that go under the plug (if they'll fit in the recessed hole) Is there = an official spec for these temps in the area you're measuring? =20 =20 Of course I agree that keeping the metal at a certain temp is indeed the true goal. Rotax agrees as well. As I understand it, the 912S uses = Evan's NPG+ as the only allowed coolant. There is no spec for coolant temp, = and in fact they don't even recommend measuring it. There is a spec for CHT's, which is all they care about. =20 =20 Cheers, Rusty (might be game for CHT's if it's not too late) =20 ------=_NextPart_000_00BC_01C52E17.22E1DC40 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
So, to me, the answer to your = question=20 (The real question is how much = flow do we=20 need?)  is the = engine=20 within its max operating temps.  This is why I installed = “CHT” probes on my=20 engine, to monitor the metal temps in the vicinity of the=20 plugs.

 

 

Hi=20 Mark,

 

You've = probably mentioned=20 this before, but can you refresh my memory as to where you put these=20 probes?  I'm guessing you could just use the ring type that go = under=20 the plug (if they'll fit in the recessed hole)   Is there an=20 official spec for these temps in the area you're=20 measuring?  

 

Of course I = agree that=20 keeping the metal at a certain temp is indeed the true goal.  Rotax = agrees=20 as well.  As I understand it, the 912S uses Evan's = NPG+ as=20 the only allowed coolant.  There is no spec for coolant temp, = and in=20 fact they don't even recommend measuring it.  There is a spec for = CHT's,=20 which is all they care = about.   

 

Cheers,

Rusty (might = be game=20 for CHT's if it's not too=20 late)   

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