X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail02.syd.optusnet.com.au ([211.29.132.183] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTPS id 2828139 for flyrotary@lancaironline.net; Tue, 01 Apr 2008 18:08:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.183; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-37-171.dsl.nsw.optusnet.com.au [220.236.37.171]) by mail02.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m31M7U32011323 for ; Wed, 2 Apr 2008 09:07:31 +1100 Message-ID: <005a01c89444$ca330f50$ab25ecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] The dry sump system. Date: Wed, 2 Apr 2008 08:07:33 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0057_01C89498.9AD688F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0057_01C89498.9AD688F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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? 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) So named because the sump, in the case of the rotary is just a flat = plate, is not used for storing spent engine oil. Two or more scavenge = lines remove oil from above the flat plate and pressurize it through two = or more scavenge sections of the pump. The pressurized oil is then = pushed to the storage tank. It may also be forced through one or more = coolers on the way to the storage tank, and have no affect on oil = pressure.=20 The pressure section of the pump pulls oil from the bottom of the oil = storage tank, pressurizes it and sends it to a filter and then an = additional cooler. If the cooler is known to be clean, then cooler and = filter may be reversed. From the cooler/filter then to the engine. In = this case an extra oil line from oil in to the front bearing gallery is = shown, that is not required on aircraft.=20 While the most expensive/complex and heavy of all oiling systems, the = dry sump system allows for a wide range of options, in locating stored = oil. In the amount of oil pressure to be used. In providing for = additional coolers to be installed in a wide range of locations. And in = providing oil with the smallest amount of foam included. The primary = cost is in the pump, as they run about $1,500.00 new for a three = section. Weaver Brothers, Peterson, Moroso, and Stock Car Products are = brands that come to mind. The SCP pieces seem to be the lowest priced.=20 An alternative, is to use the engine pump for oil pressure, and run an = aftermarket pump for scavenging oil to a storage tank. Slightly less = complex and cheaper, and very effective.=20 Not needed for airplanes, but like all brainstorming, fodder for the = mill.................. Lynn E. Hanover -------------------------------------------------------------------------= ----- Create a Home Theater Like the Pros. Watch the video on AOL Home. -------------------------------------------------------------------------= ----- -------------------------------------------------------------------------= ----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG.=20 Version: 7.5.519 / Virus Database: 269.22.2/1353 - Release Date: = 31/03/2008 6:21 PM ------=_NextPart_000_0057_01C89498.9AD688F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Lynn,
With this last system, using a scavenge pump to a remote tank and = if the=20 tank was higher than the stock pump - could you run a gravity fed = line to=20 the stock pump and what would be the best plumbing set-up?
 
Do these scavenge pumps run dry periodically and if so does it = cause any=20 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)
So named because the sump, in the case of the rotary is just a = flat=20 plate, is not used for storing spent engine oil. Two or more scavenge = lines=20 remove oil from above the flat plate and pressurize it through two or = more=20 scavenge sections of the pump. The pressurized oil is then pushed = to the=20 storage tank. It may also be forced through one or more = coolers on the=20 way to the storage tank, and have no affect on oil pressure.
 
The pressure section of the pump pulls oil from the bottom of the = oil=20 storage tank, pressurizes it and sends it to a filter and then an = additional=20 cooler. If the cooler is known to be clean, then cooler and filter may = be=20 reversed. From the cooler/filter then to the engine. In this case an = extra oil=20 line from oil in to the front bearing gallery is shown, that is not = required=20 on aircraft.
 
While the most expensive/complex and heavy of all oiling systems, = the dry=20 sump system allows for a wide range of options, in locating stored = oil. In the=20 amount of oil pressure to be used. In providing for additional coolers = to be=20 installed in a wide range of locations. And in providing oil with the = smallest=20 amount of foam included. The primary cost is in the pump, as they run = about=20 $1,500.00 new for a three section. Weaver Brothers, Peterson, Moroso, = and=20 Stock Car Products are brands that come to mind. The SCP pieces = seem to=20 be the lowest priced. 
 
An alternative, is to use the engine pump for oil pressure, and = run an=20 aftermarket pump for scavenging oil to a storage tank. Slightly less = complex=20 and cheaper, and very effective.
 
Not needed for airplanes, but like all brainstorming, fodder for = the=20 mill..................
 
Lynn E. Hanover
 
 



Create a Home Theater Like the Pros. Watch the video on AOL Home.

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No virus found in this incoming message.
Checked by AVG.=20
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