X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA03.emeryville.ca.mail.comcast.net ([76.96.30.32] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3494756 for flyrotary@lancaironline.net; Sun, 15 Feb 2009 16:27:38 -0500 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.32; envelope-from=techwelding@comcast.net Received: from OMTA09.emeryville.ca.mail.comcast.net ([76.96.30.20]) by QMTA03.emeryville.ca.mail.comcast.net with comcast id GE5m1b00E0S2fkCA3MT5Xr; Sun, 15 Feb 2009 21:27:05 +0000 Received: from dell ([68.53.54.26]) by OMTA09.emeryville.ca.mail.comcast.net with comcast id GMT31b00Y0Zvvcc8VMT4zq; Sun, 15 Feb 2009 21:27:05 +0000 Message-ID: <04c501c98fb4$25192560$1a363544@dell> From: "Ed Klepeis" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: My RV10 Cowl Date: Sun, 15 Feb 2009 15:27:02 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_04C2_01C98F81.D9ACE670" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 This is a multi-part message in MIME format. ------=_NextPart_000_04C2_01C98F81.D9ACE670 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear Bobby Just got back on line after the ice storm looks good. If you can = could you keep me posted as to your temps just to see how everything = works and sizes of coolers. thanks = Regards = Ed Klepeis ----- Original Message -----=20 From: Bobby J. Hughes=20 To: Rotary motors in aircraft=20 Sent: Monday, February 09, 2009 6:50 PM Subject: [FlyRotary] Re: My RV10 Cowl No exit ducts. It just dumps into the cowl. I don't think the ducts = are in a boundary layer. They are partially submerged but pretty much in = straight in the air flow. Here's a pic of the plug during construction = that shows the ice cream scoop cut in.=20 -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of wrjjrs@aol.com Sent: Monday, February 09, 2009 6:22 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: My RV10 Cowl Interesting Bobby,=20 Seems to be working. Is there another set of ducts the turns the air = the rest of the way round? Or does the air exit the rads to flow into = the cowl and then exit rearward like the opening in a conventional air = cooled engine? I can't really tell from the pictures, but I wondered if = you bothered with any kind of boundry layer control? Good luck and I = hope for your continued success. Bill Jepson=20 -----Original Message----- From: Bobby J. Hughes To: Rotary motors in aircraft Sent: Mon, 9 Feb 2009 3:46 pm Subject: [FlyRotary] Re: My RV10 Cowl Bill, Here is the rest of the picture. The cowl is actually three pieces. = The bottom fairing slides into place to feed the radiator ducts. The air = makes a 360. Not my first plan but it seems to be working. The ducts = are in high pressure at any attitude and it would appear they are = getting good air from the prop. With the cowl off and an OAT of 65 I = had a hard time warming up the oil. Stuffing carpet in ducts solved = that problem. Bobby =20 -------------------------------------------------------------------------= ----- Looking good Bobby, Interesting inlet solution. Any ducting or a straight inlet to a = plenum? Good numbers. Bill Jepson =20 -------------------------------------------------------------------------= ----- A Good Credit Score is 700 or Above. See yours in just 2 easy steps!=20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html -------------------------------------------------------------------------= ----- A Good Credit Score is 700 or Above. See yours in just 2 easy steps!=20 -------------------------------------------------------------------------= ----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_04C2_01C98F81.D9ACE670 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dear Bobby
       = Just got back=20 on line after the ice storm looks good. If you can could you keep me = posted as=20 to your temps just to see how everything works and sizes of coolers.=20 thanks
          &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =            =20 Regards
          &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =         =20 Ed Klepeis
----- Original Message -----
From:=20 Bobby J. = Hughes=20
Sent: Monday, February 09, 2009 = 6:50=20 PM
Subject: [FlyRotary] Re: My = RV10=20 Cowl

No exit ducts. It just dumps into the cowl. I = don't think=20 the ducts are in a boundary layer. They are partially submerged = but=20 pretty much in straight in the air flow.  Here's a pic = of the=20 plug during construction that shows the ice cream scoop cut in.=20
From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of=20 wrjjrs@aol.com
Sent: Monday, February 09, 2009 6:22=20 PM
To: Rotary motors in aircraft
Subject: = [FlyRotary] Re:=20 My RV10 Cowl

Interesting Bobby,
Seems to be working. Is there = another set of=20 ducts the turns the air the rest of the way round? Or does the air = exit the=20 rads to flow into the cowl and then exit rearward like the opening in = a=20 conventional air cooled engine? I can't really tell from the pictures, = but I=20 wondered if you bothered with any kind of boundry layer control? = Good=20 luck and I hope for your continued success.
Bill Jepson 



-----Original=20 Message-----
From: Bobby J. Hughes <bhughes@qnsi.net>
To: = Rotary=20 motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, 9 = Feb=20 2009 3:46 pm
Subject: [FlyRotary] Re: My RV10 Cowl

Bill,
Here is the rest of the picture. = The cowl is actually three pieces. The = bottom=20 fairing slides into place to feed the radiator ducts. The air = makes a=20 360.  Not my first plan but it seems to be = working.  The ducts=20 are in high pressure at any attitude and it would appear they are = getting good air from the prop.  With the cowl off  and an OAT of 65 I = had a hard=20 time warming up the oil.  Stuffing carpet in ducts solved that = problem.=20 Bobby
 

 

Looking good Bobby,
Interesting inlet solution. Any = ducting or a=20 straight inlet to a plenum?  Good numbers.
Bill Jepson

 


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