Return-Path: Received: from out002.verizon.net ([206.46.170.141] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 593529 for flyrotary@lancaironline.net; Thu, 06 Jan 2005 13:03:29 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.170.141; envelope-from=finn.lassen@verizon.net Received: from verizon.net ([4.12.145.173]) by out002.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20050106180251.YPHU12052.out002.verizon.net@verizon.net> for ; Thu, 6 Jan 2005 12:02:51 -0600 Message-ID: <41DD7D4A.3070104@verizon.net> Date: Thu, 06 Jan 2005 13:02:50 -0500 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax; PROMO) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Acceptable oil pressure References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------050201080209070303040405" X-Authentication-Info: Submitted using SMTP AUTH at out002.verizon.net from [4.12.145.173] at Thu, 6 Jan 2005 12:02:51 -0600 This is a multi-part message in MIME format. --------------050201080209070303040405 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Factory specs are mininum 1 psi / 100 RPM, so it looks like you're OK. However, its odd that pressures aren't a bit higher. Finn John Slade wrote: > Leon and anyone else who cares to comment... > > The remaining question with my installation is whether the oil > pressure is acceptable, or whether something actually wrong. > Everything has been triple calibrated now, so I'm pretty sure of the > following readings..... > > Start-up at 70F ambient gets me 80 - 85PSI. Once the oil gets hot I'm > seeing about 15 or so at idle, 25 PSI at 2000 rpm, 45 PSI at 3500 rpm, > and maybe 60 PSI at 4000. Talking about today with Tracy he felt it > was marginal, and was wondering if this might be normal with > a combination of a turbo and a redrive both taking pressure. Other > possible causes he suggested were Ed's spinning shaft syndrome or air > being sucked by a leaking oil pickup. > > I hate to remove the engine (again) to check these items. > > What do people think? Anything else I can check? > > John (no more soot on the prop) --------------050201080209070303040405 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Factory specs are mininum 1 psi / 100 RPM, so it looks like you're OK.
However, its odd that pressures aren't a bit higher.

Finn

John Slade wrote:

Leon and anyone else who cares to comment...

The remaining question with my installation is whether the oil pressure is acceptable, or whether something actually wrong.

Everything has been triple calibrated now, so I'm pretty sure of the following readings.....

Start-up at 70F ambient gets me 80 - 85PSI. Once the oil gets hot I'm seeing about 15 or so at idle, 25 PSI at 2000 rpm, 45 PSI at 3500 rpm, and maybe 60 PSI at 4000. Talking about today with Tracy he felt it was marginal, and was wondering if this might be normal with a combination of a turbo and a redrive both taking pressure. Other possible causes he suggested were Ed's spinning shaft syndrome or air being sucked by a leaking oil pickup.

I hate to remove the engine (again) to check these items.

What do people think? Anything else I can check?

John (no more soot on the prop)

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