X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2939502 for flyrotary@lancaironline.net; Mon, 26 May 2008 15:29:46 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([75.191.186.236]) by cdptpa-omta05.mail.rr.com with SMTP id <20080526192907.WNXS8238.cdptpa-omta05.mail.rr.com@edward2> for ; Mon, 26 May 2008 19:29:07 +0000 Message-ID: <000001c8bf66$ca337b00$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Use Metal Pickup! [FlyRotary] bad oil pickup example Date: Mon, 26 May 2008 15:28:56 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0036_01C8BF45.367E61C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0036_01C8BF45.367E61C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Kevin, I can tell you that you do NOT want even the smallest air leak in your = oil pickup. If you do the pump will find it easier to suck air than = oil.=20 Another aspect is that early rotary pioneer had his engine seize = because he was using an 18-24" length of rubber hose for his oil pickup. = It normally took a long time (approx 60 sec) for his oil pressure to = come up after engine start and one hot day the combination of the hot = oil and hot temps softened the hose sufficient that the pump sucked it = closed - no oil to the bearings and the engine seized. Fortunately, it = happened after he was on the ground (after several flights that day). = It shook him up to the point he removed the rotary engine - although it = was really no fault of the engine. =20 I personally would only have metal or a proven part in my oil pickup = assembly. FWIW Ed -------------------------------------------------------------------------= ------- Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.dmack.net/mazda/index.html ----- Original Message -----=20 From: kevin lane=20 To: Rotary motors in aircraft=20 Sent: Monday, May 26, 2008 1:05 PM Subject: [FlyRotary] bad oil pickup example on the renesis engine I bought, the prior owner (I forget his name) = built a custom oil pan. this was the mod for the oil pickup. I doubted = that fiberglass would do well in a 200 degree plus oil bath environment. = with a cut-off wheel and a screwdriver the fiberglass literally popped = off. that would have not been too cool when flying! I'm glad Bruce did = the overhaul. kevin -------------------------------------------------------------------------= ----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0036_01C8BF45.367E61C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Kevin,
 
I can tell you that you do NOT want = even the=20 smallest air leak in your oil pickup.  If you do the pump will find = it=20 easier to suck air than oil. 
 
Another aspect is that early rotary = pioneer=20 had  his engine seize because he was using an 18-24" length of = rubber hose=20 for his oil pickup.  It normally  took a long time = (approx 60=20 sec)  for his oil pressure to come up after engine start and one = hot day=20 the combination of the hot oil and hot temps softened the hose = sufficient that=20 the pump sucked it closed - no oil to the bearings and the engine = seized. =20 Fortunately, it happened after he was on the ground (after several = flights that=20 day).  It shook him up to the point he removed the rotary engine - = although=20 it was really no fault of the engine. 
 
 
I personally would only have metal or a = proven=20 part in my oil pickup assembly.
 
FWIW
 
Ed
 
Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.comhttp://www.andersonee.com
http:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.dmack.net/mazda= /index.html
----- Original Message -----
From:=20 kevin = lane=20
Sent: Monday, May 26, 2008 1:05 = PM
Subject: [FlyRotary] bad oil = pickup=20 example

on the renesis engine I bought, the = prior=20 owner (I forget his name) built a custom oil pan.  this was the = mod for=20 the oil pickup.  I doubted that fiberglass would do well in a 200 = degree=20 plus oil bath environment.  with a cut-off wheel and a = screwdriver the=20 fiberglass literally popped off.  that would have not been too = cool when=20 flying!  I'm glad Bruce did the overhaul.   =20 kevin

--
Homepage:  http://www.flyrotary.com/
Archive and=20 UnSub:  =20 = http://mail.lancaironline.net:81/lists/flyrotary/List.html
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