X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail17.syd.optusnet.com.au ([211.29.132.198] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTPS id 2158599 for flyrotary@lancaironline.net; Wed, 04 Jul 2007 21:17:51 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.198; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-111-44.dsl.nsw.optusnet.com.au [211.31.111.44]) by mail17.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l651H7dL025187 for ; Thu, 5 Jul 2007 11:17:08 +1000 Message-ID: <000801c7bea2$36cf1970$2c6f1fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: [Fwd: [Fwd: RV-7A Cooling]] Date: Thu, 5 Jul 2007 11:17:09 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C7BEF6.07454180" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C7BEF6.07454180 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, I haven't been following this closely, however the oil normal fill line = is the top of the oil pan (bottom of the block) - if your 3/4 " below = that you could be sucking air (via vortex from around the top of the = pick-up flange - Mistral had this problem) unless your pick-up is 3/4" = below standard position, or have a standard pick-up tube with a 3/4" = spacer at the bottom of the engine. George (down under) Dennis,=20 Have you measured the oil temps before the cooler to determine the = delta-T of your system? =20 Mark S. =20 On 7/4/07, Dennis Haverlah wrote:=20 Flew my RV yesterday with OAT of 83 deg F - should have cooled = really well - No Joy!! The water was OK but the oil cooling just does = not appear to cool any better after all the duct/air flow improvements. = The wedge oil pan did not help either- I guess I did not have oil = foaming after all. My oil level in the wedge pan is 3/4 inch below the = 1/2 inch aluminum mounting plate. Now I'm wondering if my oil system is = too flow restrictive. My oil pressure only reaches 85 psi when the oil = is cool and when I'm flying it goes to the lower 60's. Oil pressure is = measured on the adaptor plate where the oil returnes to the engine. =20 My oil system is as follows: I come out of the normal oil outlet - = (I have not tapped the lower galley and plumbed the oil outlet there) - = with an An - 10 line to the Mazda (89?) oil cooler. After the oil = cooler, I use An-8 hose from the oil radiator to an aftermarket oil = filter housing with the K&N HP 1002 oil filter. From the oil filter I = use An-8 hose to go to the adaptor block on the enigne. Two pictures of = the oil system are attached. The attached pictures are early pictures = before the wiring etc. was in flight ready condition. The oil cooler is clean and I've removed and checked the oil by-pass = thermostat in hot water - it opened at or below 160 Deg F. Anyone know = of an easy and accurate way to determine if it is working properlly - = maybe check temps. at both ends of the oil radiator as the engine and = oil heats up. Also, is there an easy way to remove the oil thermostat = and seal the bypass hole?=20 =20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0005_01C7BEF6.07454180 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Mark,

I haven't been following this closely, = however the=20 oil normal fill line is the top of the oil pan (bottom of the = block) - if=20 your 3/4 " below that you could be sucking air (via vortex from around = the top=20 of the pick-up flange - Mistral had this problem) unless your pick-up is = 3/4"=20 below standard position, or have a standard pick-up tube with a 3/4" = spacer at=20 the bottom of the engine.

George (down under)

Dennis,

Have you measured the oil temps before the cooler to determine = the=20 delta-T of your system?

Mark S.

On 7/4/07, Dennis=20 Haverlah <clouduster@austin.rr.com>= =20 wrote:=20

Flew my RV = yesterday with=20 OAT of 83 deg F - should have cooled really well - No Joy!! = The water=20 was OK but the oil cooling just does not appear to cool any better = after all=20 the duct/air flow improvements. The wedge oil pan did not help = either-=20 I guess I did not have oil foaming after all. My oil level in = the=20 wedge pan is 3/4 inch below the 1/2 inch aluminum mounting = plate. Now=20 I'm wondering if my oil system is too flow restrictive. = My oil=20 pressure only reaches 85 psi when the oil is cool and when I'm = flying it=20 goes to the lower 60's. Oil pressure is measured on the = adaptor=20 plate where the oil returnes to the engine.

My oil = system is=20 as follows: I come out of the normal oil outlet - (I have not = tapped=20 the lower galley and plumbed the oil outlet there) - with an = An - 10=20 line to the Mazda (89?) oil cooler. After the oil cooler, I = use An-8=20 hose from the oil radiator to an aftermarket oil filter housing with = the=20 K&N HP 1002 oil filter. From the oil filter I use = An-8 hose=20 to go to the adaptor block on the enigne. Two pictures of the = oil=20 system are attached. The attached pictures are early = pictures=20 before the wiring etc. was in flight ready condition.

The = oil=20 cooler is clean and I've removed and checked the oil by-pass = thermostat in=20 hot water - it opened at or below 160 Deg F. Anyone know of an easy = and=20 accurate way to determine if it is working properlly - maybe check = temps. at=20 both ends of the oil radiator as the engine and oil heats up. =20 Also, is there an easy way to remove the oil thermostat and = seal the=20 bypass hole?

--
Homepage: http://www.flyrotary.com/
Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l

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