X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.12.143.101] (HELO imo-m13.mail.aol.com) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTP id 2831487 for flyrotary@lancaironline.net; Thu, 03 Apr 2008 22:38:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.143.101; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-m13.mx.aol.com (mail_out_v38_r9.3.) id q.c6d.2554f416 (41812) for ; Thu, 3 Apr 2008 22:37:35 -0400 (EDT) From: Lehanover@aol.com Message-ID: Date: Thu, 3 Apr 2008 22:37:34 EDT Subject: Re: [FlyRotary] Re: The dry sump system. To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1207276654" X-Mailer: 9.0 for Windows sub 1111 X-Spam-Flag: NO -------------------------------1207276654 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/1/2008 3:08:43 PM Pacific Daylight Time, lendich@optusnet.com.au writes: Lynn, With this last system, using a scavenge pump to a remote tank and if the tank was higher than the stock pump - could you run a gravity fed line to the stock pump and what would be the best plumbing set-up?The feed to the pump is gravety feed and a large diameter hose is needed to keep drag to a minimum. At least an inch for short runs. I use 1 1/4" for mine. For feeding the stock pump I would make up a fitting as in the second set of drawings. With two gaskets and holes right through the flat plate oil pan. Do these scavenge pumps run dry periodically and if so does it cause any damage to the pump or are they designed for this? I'm guessing their low pressure pumps and there's not a lot of stress on them. George ( down under) Generally all three of the pump elements are the same material and the same size. You can order different sizes. I use a 7/8 or 1 inch pressure section and 2 3/4" scavenge sections. All are powdwered metal. You can get the pressure section in a heat treated form if you like that. When hooked to the pan there is never a dry period for these sections. But there is a lot of air. Air flows from the oil storage tank to the engine through the breather hose. The air and oil from the engine mix in the pump and are forced back into the storage tank. The crank case is always running in a slight vacuum. A small air filter on the tank breather is required. Lynn E. Hanover **************Planning your summer road trip? Check out AOL Travel Guides. (http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000016) -------------------------------1207276654 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 4/1/2008 3:08:43 PM Pacific Daylight Time, lendich@o= ptusnet.com.au writes:
 Lynn,
With this last system, using a scavenge pum= p to a remote tank and if the tank was higher than the stock pump - cou= ld you run a gravity fed line to the stock pump and what would be the best p= lumbing set-up?The feed to the pump is gravety feed and a large diameter hos= e is needed to keep drag to a minimum. At least an inch for short runs. I us= e 1 1/4" for mine. For feeding the stock pump I would make up a fitting as i= n the second set of drawings. With two gaskets and holes right through the f= lat plate oil pan.
 
Do these scavenge pumps run dry periodicall= y and if so does it cause any damage to the pump or are they designed for th= is? I'm guessing their low pressure pumps and there's not a lot of stress on= them.
George ( down under)
 
 
Generally all three of the pump elements ar= e the same material and the same size. You can order different sizes. I use=20= a 7/8 or 1 inch pressure section and 2 3/4" scavenge sections. All are powdw= ered  metal. You can get the pressure section in a heat treated form if= you like that. When hooked to the pan there is never a dry period for these= sections. But there is a lot of air. Air flows from the oil storage tank to= the engine through the breather hose. The air and oil from the engine mix i= n the pump and are forced back into the storage tank. The crank case is alwa= ys running in a slight vacuum. A small air filter on the tank breather is re= quired.
 
 
Lynn E. Hanover
 



Planning your summer road t= rip? Check out AOL Travel Guides.
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