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 6.0.4) with ESMTP id 6220438 for flyrotary@lancaironline.net; Tue, 23 Apr 2013 08:27:45 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=2.0 cv=XL2yuHdE c=1 sm=0 a=g3L/TDsr+eNLfIieSKfGkw==:17 a=AHkS0RJitIMA:10 a=pDrL3eAuyQwA:10 a=05ChyHeVI94A:10 a=ayC55rCoAAAA:8 a=7ufFFCFeyDEA:10 a=arxwEM4EAAAA:8 a=r1ClD_H3AAAA:8 a=oCcaPWc0AAAA:8 a=-LJiX9BAsY-Qda4KiG8A:9 a=pILNOxqGKmIA:10 a=pcLIrrrKAAAA:8 a=Ia-xEzejAAAA:8 a=3jT8i6vePamiLs1g4T0A:9 a=_W_S_7VecoQA:10 a=ftFGBYpk1mUA:10 a=EzXvWhQp4_cA:10 a=QcvwJR2QRI3wg_zP:21 a=g3L/TDsr+eNLfIieSKfGkw==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 174.110.170.10 Received: from [174.110.170.10] ([174.110.170.10:61791] helo=EdPC) by cdptpa-oedge04.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id EA/A5-25887-02E76715; Tue, 23 Apr 2013 12:27:12 +0000 Message-ID: From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Marcotte Re-drive Date: Tue, 23 Apr 2013 08:27:14 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0067_01CE3FFC.5BEE3790" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_0067_01CE3FFC.5BEE3790 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable John, I have read NACA reports that claim a NACA duct should not be used = when there is back pressure such as cased by a heat exchanger core - = that the NACA duct is better suited for such applications as air inlet = to engine induction system. That said, plenty of folks have used the = Naca duct successfully - perhaps not optimum - but, hey!, if it works. Personally, I would opt for taking air off the right side radiator inlet = for four reasons. 1. I suspect that the oil volume/temp for the gear = box would NOT require nearly as much air flow as say an engine oil = cooler or radiator. 2. Duct losses for the radiator are already = encountered - no need to add another duct and their losses. 3. You do = not have to make additional hole in your cowl. 4. If this option = fails to produce desired results you could always opt for cutting = another hole in your cowl. Ed Edward L. Anderson Anderson Electronic Enterprises LLC 305 Reefton Road Weddington, NC 28104 http://www.andersonee.com http://www.eicommander.com From: John=20 Sent: Monday, April 22, 2013 9:10 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Marcotte Re-drive Thomas, my machinist friend cut a grove in the case under the prop shaft = bearings so the oil would have a route to return to the main section, = also he made a retainer to secure the seal in the case. I have to = install an oil cooler for the redrive, also a temperature gauge. I'm = glassing in the inlet for the engine oil cooler now, but family matters = are slowing progress, I tell everyone it will be done in May, just not = sure what year. I'm not sure at this point if I should install a NACA duct or do a = take off from the right side radiator inlet duct for the transmission = cooler, Ed what is your opinion on this. JohnD=20 No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3272 / Virus Database: 3162/6265 - Release Date: = 04/22/13 ------=_NextPart_000_0067_01CE3FFC.5BEE3790 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
John, I have read NACA reports that claim a NACA = duct=20 should not be used when there is back pressure such as cased by a heat = exchanger=20 core - that the NACA duct is better suited for such applications as air = inlet to=20 engine induction system.  That said, plenty of folks have used the = Naca=20 duct successfully - perhaps not optimum - but, hey!, if it = works.
 
Personally, I would opt for taking air off the = right side=20 radiator inlet for four reasons.  1.  I suspect that the oil=20 volume/temp for the gear box would NOT require nearly as much air flow = as say an=20 engine oil cooler or radiator.  2.  Duct losses for the = radiator are=20 already encountered - no need to add another duct and their = losses. =20 3.  You do not have to make additional hole in  your = cowl. =20 4.  If this option fails to produce desired results you could = always opt=20 for cutting another hole in your cowl.
 
Ed
 
Edward L. Anderson
Anderson Electronic = Enterprises=20 LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com

From: John
Sent: Monday, April 22, 2013 9:10 PM
Subject: [FlyRotary] Marcotte Re-drive

Thomas, my machinist friend cut a grove = in the case=20 under the prop shaft bearings so the oil would have a route to return to = the=20 main section, also he made a retainer to secure the seal in the = case.  I=20 have to install an oil cooler for the redrive, also a temperature = gauge. =20 I'm glassing in the inlet for the engine oil cooler now, but family = matters are=20 slowing progress, I tell everyone it will be done in May, just not sure = what=20 year.
      I'm not sure = at this=20 point if I should install a NACA duct or do a take off from the right = side=20 radiator inlet duct for the transmission cooler, Ed what is your opinion = on=20 this.  JohnD 

No virus found in this=20 message.
Checked by AVG - www.avg.com
Version: 2013.0.3272 / = Virus=20 Database: 3162/6265 - Release Date: 04/22/13

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