Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.2.3) with ESMTP id 432474 for flyrotary@lancaironline.net; Sat, 25 Sep 2004 20:10:05 -0400 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 <20040926000935.YLA1787.imf23aec.mail.bellsouth.net@rd> for ; Sat, 25 Sep 2004 20:09:35 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] oil filter, pressure test, ewp Date: Sat, 25 Sep 2004 19:09:52 -0500 Message-ID: <01ab01c4a35d$250bc1b0$04000100@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01AC_01C4A333.3C35B9B0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_01AC_01C4A333.3C35B9B0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Test run 2- (60 micron screen, Mobile One 15w50 oil) 6000 rpm, 150 degree oil into the engine, 115 psi before cooler and = filter, 84 psi after (31 psi diff) 6000 rpm, 180 degree oil into the engine, 105 psi before cooler and = filter, 82 psi after (23 psi diff) =20 Test run 3- (60 micron screen, Mobile One 5w30 oil) 6000 rpm, 150 degree oil into the engine, 110 psi before cooler and = filter, 83 psi after (27 psi diff) 6000 rpm, 180 degree oil into the engine, 100 psi before cooler and = filter, 82 psi after (18 psi diff) =20 These are even better numbers for the differential pressure, but he real good news is the length of time it took to heat up the oil. The only = diff between today, and yesterday is the oil weight. Today, it took more = than twice as long to get the oil up to 140. I was even running higher rpms = to get it there. Even after some full throttle running, I still never saw = 200 degrees. This may be the key to my oil temp issues. =20 =20 In looking back at my logs, I noticed that I originally started with = 10w30, but didn't note when I changed to 15w50. I suspect it was during the = rev-2 upgrade though. Can't wait to see if there's a cooling improvement with = the 5w-30 weight. Bet there will be. =20 =20 In the bad news department, one of my oil cooler hoses is leaking. The = damn Earls fitting just decided to seep oil out the back side of the nut, and there's nothing I can do to stop it. Naturally, I don't have a = replacement. I do have a straight fitting, and could use it, along with the 45 degree adapter that I used for measuring oil pressure. I could use it for oil pressure, or oil temp. I currently monitor the temp in the pan, but = this would be better, since it's just before the oil cooler. My main oil = temp reading is just after the cooler, so this would give a nice differential temp across the cooler. Having the pressure reading could allow me to = know when the oil filter is starting to get restrictive. Plenty of uses for = the adapter it seems, so I think I just talked myself into putting on a = straight fitting tomorrow. =20 =20 Also helped a friend remove the damaged outboard section of his Grumman Tiger wing. I guess the good news is that his only damage was to a = section of wing that's easily removable for repair or replacement. =20 =20 Cheers, Rusty ------=_NextPart_000_01AC_01C4A333.3C35B9B0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Test run 2- (60 = micron=20 screen, Mobile One 15w50 oil)

6000 rpm, 150=20 degree oil into the engine, 115 psi before cooler and filter, 84 psi = after (31=20 psi diff)

6000 rpm, 180=20 degree oil into the engine, 105 psi before cooler and filter, 82 psi = after (23=20 psi diff)

 

Test run 3- (60=20 micron screen, Mobile One 5w30 oil)

6000 rpm, 150=20 degree oil into the engine, 110 psi before cooler and filter, 83 psi = after (27=20 psi diff)

6000 rpm, 180=20 degree oil into the engine, 100 psi before cooler and filter, 82 psi = after (18=20 psi diff)

 

These are even=20 better numbers for the differential pressure, but he real good news is = the=20 length of time it took to heat up the oil. =20 The only diff between today, and yesterday is the oil = weight.  Today, it took more than twice = as long=20 to get the oil up to 140.  = I was=20 even running higher rpms to get it there. =20 Even after some full throttle running, I still never saw 200=20 degrees.  This may be the = key to my=20 oil temp issues.   =

 

In = looking back=20 at my logs, I noticed that I originally=20 started with 10w30, but didn’t note when I changed to = 15w50.  I suspect it was during the = rev-2=20 upgrade though.  = Can’t wait to see=20 if there’s a cooling improvement with the 5w-30 weight.  Bet there will be. 

 

In = the bad news=20 department, one of my oil cooler hoses is leaking.  The damn Earls fitting just = decided to=20 seep oil out the back side of the nut, and there’s nothing I can = do to stop=20 it.  Naturally, I = don’t have a=20 replacement.  I do have a = straight=20 fitting, and could use it, along with the 45 degree adapter that I used = for=20 measuring oil pressure.  I = could use=20 it for oil pressure, or oil temp.  I=20 currently monitor the temp in the pan, but this would be better, since = it’s just=20 before the oil cooler.  My = main oil=20 temp reading is just after the cooler, so this would give a nice = differential=20 temp across the cooler.  =20 Having the pressure reading could allow me to know when the oil = filter is=20 starting to get restrictive.  = Plenty=20 of uses for the adapter it seems, so I think I just talked myself into = putting=20 on a straight fitting tomorrow.   

 

Also helped = a friend=20 remove the damaged outboard section of his Grumman Tiger = wing.  I=20 guess the good news is that his only damage was to a section of = wing=20 that's easily removable for repair or=20 replacement.   

 

Cheers,

Rusty

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