X-Virus-Scanned: clean according to Sophos on Logan.com From: "Al Wick" Received: from outbound-mail02.dca.untd.com ([64.136.47.36] verified) by logan.com (CommuniGate Pro SMTP 6.1.4) with SMTP id 7821135 for flyrotary@lancaironline.net; Tue, 07 Jul 2015 12:04:26 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.136.47.36; envelope-from=alwick@juno.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juno.com; s=alpha; t=1436285032; bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=; l=0; h=Message-ID:From:To:Subject:Date:Content-Type; b=WKi4d9FwIrN6IIVxNaRg21EDk7OB5YeGbYDlFbeQtXFAUmJVN1dupjKgRGB5+NSOG RhEAFDh9hlJm3LE/hHDzpuT3R3qFyaNfeN3BePamGeMqpAnLMFHjRDO4vp2hLdGMW9 8pcMMfcNZ6nn+YX0Gw0IPmxirs33yLvVhJ3ULNKk= Received: from Admin7PC ([50.109.238.61]) by smtpout04.dca.untd.com with SMTP id AABL3Z8BNACMVGCA for (sender ); Tue, 7 Jul 2015 09:02:52 -0700 (PDT) Message-ID: <19C773D0D59641C6830E3190FE168371@Admin7PC> To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Adequate Cooling Date: Tue, 7 Jul 2015 09:02:49 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_008A_01D0B893.B2CE1D20" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3528.331 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3528.331 X-Originating-Ip: 50.109.238.61 X-UNTD-BodySize: 7048 X-ContentStamp: 15:7:3502578139 X-MAIL-INFO:2ffd2d942d94d4659454d4b454d4404449f961d1e559b1614975e075317d595175d4b5859d859d01749dd90171d90160516d2454d160edb421541d891555555d30384510857d9de93485d98080e134c14dbda1d574d5296421ed04a109911084906090e48995d5e93d816400e1e1e020a091d170e5a9 X-UNTD-OriginStamp: L941HVjjYzDhN3itp//mkHbuPO3d8pGJ4u6SNFFOqhh+uiSLY1EkAg== X-UNTD-Peer-Info: 10.171.42.34|smtpout04.dca.untd.com|smtpout04.dca.untd.com|alwick@juno.com This is a multi-part message in MIME format. ------=_NextPart_000_008A_01D0B893.B2CE1D20 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Congrats on the success Jeff. I=E2=80=99d sure give some thought to = adding exhaust eductor. One of the few things you can add that improves = efficiency. Real easy to test the concept without making any sort of = commitment. Just add a large diam, say 4=E2=80=9D, tube that surrounds = exhaust outlet. It has to stick out further than exhaust pipe. That = allows expanding exhaust gas to accelerate air between the two tubes. A = real winner. You can use a little air speed device to prove how much it = accelerates air.=20 -al wick From: Jeff Whaley=20 Sent: Thursday, July 02, 2015 6:55 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Adequate Cooling Finally got to the point of adequate cooling with the radiator = installation. Since my last post regarding this topic there have been = several changes. First and foremost, the radiator was reoriented to an = approximate 40 degree angle to airflow from the previous flat profile; = the air enters bottom and flows through to top, with exit location = remaining the same. With the new angled radiator profile I felt it = prudent to add an air bleed connection to its uppermost tank; = fortunately there are mounting bosses welded there and was easy to drill = a hole into the tank and tap the thread boss for 1/8 pipe. Now all = air/steam bleed lines connect to the bottom of expansion tank. Also = following the discussion with Steve Boese, the Mazda oil cooler was = removed and I returned to the dual Fluidyne setup from years ago. Doing all of the above did not result in immediate results. Ultimately = the air inlet area had to be increased to an equivalent of 9"x7". This = evening the OAT was 72F - at circuit altitude the water temp topped out = at 190F with the oil temp at 160F. Not perfect (I know it can be = improved) but is adequate with a 20F buffer before redline. Time to get = some recurrent training on this tail dragger and get comfortable with = the machine -- worry about subtle improvements and cleaning up all the = ugly fiberglass repairs somewhere down the road ... winter is long, = summer is short. Jeff This message, and the documents attached hereto, is intended only for = the addressee and may contain privileged or confidential information. = Any unauthorized disclosure is strictly prohibited. If you have received = this message in error, please notify us immediately so that we may = correct our internal records. Please then delete the original message. = Thank you.=20 -------------------------------------------------------------------------= ------- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_008A_01D0B893.B2CE1D20 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Congrats on the success Jeff. I=E2=80=99d sure give some thought to = adding exhaust=20 eductor. One of the few things you can add that improves efficiency. = Real easy=20 to test the concept without making any sort of commitment. Just add a = large=20 diam, say 4=E2=80=9D, tube that surrounds exhaust outlet. It has to = stick out further=20 than exhaust pipe. That allows expanding exhaust gas to accelerate air = between=20 the two tubes. A real winner. You can use a little air speed device to = prove how=20 much it accelerates air.
 
-al wick
 
Sent: Thursday, July 02, 2015 6:55 PM
Subject: [FlyRotary] Adequate Cooling
 
Finally=20 got to the point of adequate cooling with the radiator = installation.  Since=20 my last post regarding this topic there have been several changes.  = First=20 and foremost, the radiator was reoriented to an approximate 40 degree = angle to=20 airflow from the previous flat profile; the air enters bottom and flows = through=20 to top, with exit location remaining the same.  With the new angled = radiator profile I felt it prudent to add an air bleed connection to its = uppermost tank; fortunately there are mounting bosses welded there and = was easy=20 to drill a hole into the tank and tap the thread boss for 1/8 = pipe.  Now=20 all air/steam bleed lines connect to the bottom of expansion tank.  = Also=20 following the discussion with Steve Boese, the Mazda oil cooler was = removed and=20 I returned to the dual Fluidyne setup from years ago.

Doing all = of the=20 above did not result in immediate results.  Ultimately the air = inlet area=20 had to be increased to an equivalent of 9"x7".  This evening the = OAT was=20 72F - at circuit altitude the water temp topped out at 190F with the oil = temp at=20 160F.  Not perfect (I know it can be improved) but is adequate with = a 20F=20 buffer before redline.  Time to get some recurrent training on this = tail=20 dragger and get comfortable with the machine -- worry about subtle = improvements=20 and cleaning up all the ugly fiberglass repairs somewhere down the road = ...=20 winter is long, summer is short.
Jeff
This message, and the=20 documents attached hereto, is intended only for the addressee and may = contain=20 privileged or confidential information. Any unauthorized disclosure is = strictly=20 prohibited. If you have received this message in error, please notify us = immediately so that we may correct our internal records. Please then = delete the=20 original message. Thank you.=20

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