Return-Path: Received: from SMTP03.INFOAVE.NET ([165.166.0.28] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 568818 for flyrotary@lancaironline.net; Wed, 15 Dec 2004 13:53:38 -0500 Received-SPF: none receiver=logan.com; client-ip=165.166.0.28; envelope-from=jewen@comporium.net Received: from home1 ([165.166.183.54]) by SMTP00.InfoAve.Net (PMDF V6.2-X31 #30986) with SMTP id <01LIFDF0V08Q95NE9U@SMTP00.InfoAve.Net> for flyrotary@lancaironline.net; Wed, 15 Dec 2004 11:57:43 -0500 (EST) Date: Wed, 15 Dec 2004 11:56:35 -0500 From: Joe Subject: Re: [FlyRotary] Re: Oil Cooling/Pumping To: Rotary motors in aircraft Message-id: <005001c4e2c7$09757b40$2632a8c0@home1> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-Mailer: Microsoft Outlook Express 6.00.2800.1437 Content-type: multipart/alternative; boundary="----=_NextPart_000_004D_01C4E29D.206D66C0" X-Priority: 3 X-MSMail-priority: Normal References: This is a multi-part message in MIME format. ------=_NextPart_000_004D_01C4E29D.206D66C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Kelly, My first thought was to find a suitable mechanical pump and belt drive = it. If an electric were chosen I would include a backup pump. Joe ----- Original Message -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Wednesday, December 15, 2004 11:50 AM Subject: [FlyRotary] Re: Oil Cooling/Pumping Joe, Idea probably has merit but it adds another failure mode (electric = pump=20 I presume)......I would not want to use it for primary oil cooling but = can see potential as a auxillary cooling system for part time use during = those max power climbouts and / or hot weather use......IMHO -- Kelly Troyer=20 Dyke Delta/13B/RD1C/EC2=20 -------------- Original message from Joe : = --------------=20 > With all the problems encountered with leaking oil coolers, I was = wondering=20 > if the following has any merit.=20 >=20 > Instead of using the engine driven oil pump to circulate oil = through the=20 > cooler, why not install a secondary cooling loop. A seconary oil = pick up=20 > would be connected to an auxilary oil pump which would circulate = the oil=20 > through the cooler and return to the sump. The secondary loop = could be run=20 > with a lower pressure and larger hoses to maintain an adequate = flow rate,=20 > putting less internal force on the oil cooler. The normal engine=20 > connections for the oil cooler would be directly connected to each = other to=20 > maintain oil flow in the engine.=20 >=20 > One downside might be the couple of extra pounds for the aux oil = pump, but ------=_NextPart_000_004D_01C4E29D.206D66C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Kelly,

My first thought was to find a suitable = mechanical=20 pump and belt drive it. If an electric were chosen I = would include a=20 backup pump.

Joe

----- Original Message -----
From:=20 Kelly = Troyer
To: Rotary motors in = aircraft

Sent: Wednesday, December 15, = 2004 11:50=20 AM

Subject: [FlyRotary] Re: Oil=20 Cooling/Pumping

Joe,

Idea probably has merit but it adds another failure mode = (electric=20 pump

I presume)......I would not want to use it for primary oil = cooling but=20 can

see potential as a auxillary cooling system for part time use = during=20 those

max power climbouts and / or hot weather use......IMHO

--
Kelly Troyer
Dyke=20 Delta/13B/RD1C/EC2

--------------=20 Original message from Joe <jewen@comporium.net>: = --------------=20

> With all the problems encountered with leaking oil = coolers,=20 I was wondering
> if the following has any merit.
> =
>=20 Instead of using the engine driven oil pump to circulate oil through = the=20
> cooler, why not install a secondary cooling loop. A = seconary oil=20 pick up
> would be connected to an auxilary oil pump which = would=20 circulate the oil
> through the cooler and return to the = sump. The=20 secondary loop could be run
> with a lower pressure and = larger hoses=20 to maintain an adequate flow rate,
> putting less internal = force on=20 the oil cooler. The normal engine
> connections for the oil = cooler=20 would be directly connected to each other to
> maintain oil = flow in=20 the engine.
>
> One downside might be the couple of = extra=20 pounds for the aux oil pump, but=20

------=_NextPart_000_004D_01C4E29D.206D66C0--