X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail11.syd.optusnet.com.au ([211.29.132.192] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTPS id 981343 for flyrotary@lancaironline.net; Wed, 01 Jun 2005 19:18:01 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.192; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-25-37.dsl.nsw.optusnet.com.au [220.236.25.37]) by mail11.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j51NHDnW019147 for ; Thu, 2 Jun 2005 09:17:14 +1000 Message-ID: <008401c56700$bd809a30$2519ecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Renesis oil pan Date: Thu, 2 Jun 2005 09:22:12 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0081_01C56754.8EDBA400" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0081_01C56754.8EDBA400 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tracy,=20 That 's good feed- back. I was under the assumption that all the engines = had the same oil level reading - AT THE TOP OF THE OIL PAN, for those = who need to know! George ( down under) 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_0081_01C56754.8EDBA400 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Tracy,

That 's good feed- back. I was under the = assumption that=20 all the engines had the same oil level reading - AT THE TOP OF THE = OIL PAN,=20 for those who need to know!

George ( down under)

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 = 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=20 idea, but that's how they get away with the shallow pan. I used = a 2nd=20 gen pan on my Renesis so I didn't have to fill above the pan. = Yes, it=20 took some mods 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 perfectly clear here:

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

The aux oil cooler I have here has = what=20 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=20 is routed through the cooling surfaces. I dont understand how a = properly=20 designed oil or water cooling system can over-cool. =

Just=20 my 2 cents
Dave
>>  Homepage:  http://www.flyrotary.com/

>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html

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