X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.4.51.82] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 980658 for flyrotary@lancaironline.net; Wed, 01 Jun 2005 12:32:01 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.4.51.82; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 1 Jun 2005 09:31:16 -0700 Message-ID: Received: from 64.4.51.220 by BAY107-DAV10.phx.gbl with DAV; Wed, 01 Jun 2005 16:31:15 +0000 X-Originating-IP: [64.4.51.220] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Renesis oil pan Date: Wed, 1 Jun 2005 12:31:12 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A6_01C566A5.CC073AB0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Wed, 1 Jun 2005 12:31:12 -0400 X-OriginalArrivalTime: 01 Jun 2005 16:31:16.0278 (UTC) FILETIME=[55228D60:01C566C7] This is a multi-part message in MIME format. ------=_NextPart_000_00A6_01C566A5.CC073AB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks David, I wanted to say that but didn't have the time. Lycs have = big oil capacities because they can burn lots of oil and still be = in-spec. It's only needed to keep some oil left at the end of a long = flight. More oil on board is just dead weight. BTW, the full oil level in the Renesis is 1" ABOVE the pan. Bad idea, = but that's how they get away with the shallow pan. I used a 2nd gen pan = on my Renesis so I didn't have to fill above the pan. Yes, it took some = mods to do this. =20 Tracy George Lendich wrote: Better to have just the extra oil capacity. George Maybe I am taking the above statement out of context, BUT...for = the sake of any newbies here, I Just want to make something perfectly = clear here: =20 Oil (or water) capacity has NOTHING to do with cooling ability. It = only increases the "inertia" of the cooling system... if you dont have = enough heat dissipation through the rad or cooler, you will still = overheat. A larger capacity will simply mean it takes longer for that to = happen, but it WILL happen. The dual cooler setup on the renesis is = there for a reason. If you make enough HP, you will also make enough = heat to probably require the second cooler. You will have to dissipate = that heat. =20 The aux oil cooler I have here has what appears to be a thermal bypass = valve in it. When the oil is cold, it bypasses at the cooler inlet to = the cooler outlet. As the oil warms up, it is routed through the cooling = surfaces. I dont understand how a properly designed oil or water cooling = system can over-cool.=20 =20 Just my 2 cents Dave >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_00A6_01C566A5.CC073AB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Thanks David, I wanted to say that but didn't have the time. = Lycs=20 have big oil capacities because they can burn lots of oil and still be=20 in-spec. It's only needed to keep some oil left at the end of a = long=20 flight. More oil on board is just dead weight.

BTW, the full oil level in the Renesis is 1" ABOVE the pan. = Bad idea,=20 but that's how they get away with the shallow pan. I used a 2nd = gen pan on=20 my Renesis so I didn't have to fill above the pan. Yes, it took = some mods=20 to do this.

Tracy

George Lendich wrote:

Better to have just the extra oil capacity.

George 
Maybe I am taking the above statement out of=20 context, BUT...for the sake of any newbies here, I Just want to make = something=20 perfectly clear here:

Oil (or water) capacity has NOTHING = to do=20 with cooling ability. It only increases the "inertia" of the cooling = system...=20 if you dont have enough heat dissipation through the rad or cooler, = you will=20 still overheat. A larger capacity will simply mean it takes longer for = that to=20 happen, but it WILL happen. The dual cooler setup on the renesis is = there for=20 a reason. If you make enough HP, you will also make enough heat to = probably=20 require the second cooler. You will have to dissipate that=20 heat.

The aux oil cooler I have here has what appears to = be a=20 thermal bypass valve in it. When the oil is cold, it bypasses at the = cooler=20 inlet to the cooler outlet. As the oil warms up, it is routed through = the=20 cooling surfaces. I dont understand how a properly designed oil = or=20 water cooling system can over-cool.

Just my 2 = cents
Dave
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