X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: "Charlie England ceengland7@gmail.com" Received: from pmg.Logan.com ([207.170.160.161] verified) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 3619084 for flyrotary@lancaironline.net; Sat, 12 Oct 2024 20:17:51 -0400 Received: from pmg.Logan.com (localhost [127.0.0.1]) by pmg.Logan.com (Proxmox) with ESMTP id C0ED8195ED for ; Sat, 12 Oct 2024 20:17:51 -0400 (EDT) Received-SPF: pass (gmail.com ... _spf.google.com: Sender is authorized to use 'ceengland7@gmail.com' in 'mfrom' identity (mechanism 'include:_netblocks.google.com' matched)) receiver=pmg.Logan.com; identity=mailfrom; envelope-from="ceengland7@gmail.com"; helo=mail-ej1-f42.google.com; client-ip=209.85.218.42 Received: from mail-ej1-f42.google.com (mail-ej1-f42.google.com [209.85.218.42]) by pmg.Logan.com (Proxmox) with ESMTPS for ; Sat, 12 Oct 2024 20:17:51 -0400 (EDT) Received: by mail-ej1-f42.google.com with SMTP id a640c23a62f3a-a99c0beaaa2so306782466b.1 for ; Sat, 12 Oct 2024 17:17:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728778663; x=1729383463; darn=lancaironline.net; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=+i8v020ATMORenrm+qnvYNdndY0tM0hWU1wTX4YbHwU=; b=SuOEq5tQAV7JK3GPKy3NuwWRrLrSqY7NrSYM2coEgdygXqCy+tcZyZIMFW1CTbo7X3 mp0nzSrGLerkspVtm/1j64RZxJc6nu++KCIcW8LYyxDEUaYWWMRve6do5Ahgk0AJxNr3 nkY3ILiQBP0Nr0GtM1WKfEPoMFf3AZwuTXINA81EVC9s8fbVRpuQ7cT0WF08/IyHZZIN /ZYTlUaQhptGReDRAcsb1zfPtCtHbMy759CC+a6T+2PQEtOgnvAXEJqctfI96Iq7EVG7 urXUiFKDuvXyR2VUNh2qlmp4IoiST7rDJr50pcPQWU2ELVVNYGRO5qL6Ifju5k0JQVUh Kllg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728778663; x=1729383463; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+i8v020ATMORenrm+qnvYNdndY0tM0hWU1wTX4YbHwU=; b=XVQmBJEjEZWBdWSbLTKgYF1hKXaCbvmVNp71u6OkpXp4Smak2FsPCoZP5hi7cMSuSv a6FhbxOL5veMNgqncuZXqM5XCvTDgRwj0brXj1LpToeHOEWrqQ7ei3YQsoR2q8MX0YOK 9uJ6Nw00vY5KlPyU8/FP4nyEqdN1CKXiMHzwgdv6xk1bbcdl1kzlUSwVOR5FRHwGhmIC nd6XEua7tbFH3XJCL4lkwzu0m14bVxP9PJmD85+PxoRv8lhCvih18advZKK6HXoIX+7f hTtl1aFyfutESWUPQ7OEbCwMiOtv6MaGouAdNMZIQvq0gOvHHurNDHqVNgwHGAZt8ylo pZ0g== X-Gm-Message-State: AOJu0Yzncsmg9iC1mPWH72hdfXQPZj0zaK8vvNOlEM5NAPBtdOAgiKnr +ssDM9z3AKFoz7GpSkxv727k9V1AnbzNVx8rTRJn2ha6SUiib/WaCzd4ET1MsOrVwSzjT1tsMP3 BH+LG5zzr3GFPfJ3M6xudniiu9UndRQ== X-Google-Smtp-Source: AGHT+IHThNwW6X4un8H/I6KEvBa6qklQ1eMdC48hNg+7HGuzwbo1ofU477Vga4T6wvlosU0ehjv45/aULEhWq4rRXSA= X-Received: by 2002:a17:906:c10c:b0:a99:5f2a:444d with SMTP id a640c23a62f3a-a99b966b13dmr654327166b.56.1728778663101; Sat, 12 Oct 2024 17:17:43 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Sat, 12 Oct 2024 19:17:33 -0500 Message-ID: Subject: Re: [FlyRotary] Re: RV-9A w13B Update To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000001c0b50062450a6b7" X-SPAM-LEVEL: Spam detection results: 0 AWL 1.308 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain DMARC_PASS -0.1 DMARC pass policy FREEMAIL_ENVFROM_END_DIGIT 0.25 Envelope-from freemail username ends in digit FREEMAIL_FROM 0.001 Sender email is commonly abused enduser mail provider HTML_MESSAGE 0.001 HTML included in message RCVD_IN_MSPIKE_H3 0.001 Good reputation (+3) RCVD_IN_MSPIKE_WL 0.001 Mailspike good senders SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record T_REMOTE_IMAGE 0.01 Message contains an external image --0000000000001c0b50062450a6b7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable If you're talking about putting the exit there, it would have to be near the front of the cowl, near the prop. (Been done with a/c engines; see Garr= ison Melmoth 2 ). But as you get closer to the windshield, external pressure goes way up, so the air would try to go *down* instead of up. Virus-free.www.avast.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Sat, Oct 12, 2024 at 2:38=E2=80=AFPM Rob McMillan robmcmillanpls@gmail.c= om < flyrotary@lancaironline.net> wrote: > Dumb Question here! > > Why don't we put cooling on the top of the cowl? > > Seems like the heat would come out better... > > > On Sat, Oct 12, 2024, 11:50=E2=80=AFAM David COOK hoursaway1@comcast.net = < > flyrotary@lancaironline.net> wrote: > >> Cowl on for cooling tests. We had good #s with it off then found not >> enough airflow with cowl on and had to add some out-venting to the botto= m >> of the cowl with simple SS marine louvers. David >> >> On 10/11/2024 9:15 PM EDT Doug Lomheim rv9flyer13b@gmail.com < >> flyrotary@lancaironline.net> wrote: >> >> >> I now have 4.2 hrs. of ground run time on the 13B I rebuilt in Feb/Mar, >> and will now drop the oil and replace with Mobile One and keep exploring >> the upper limits of the power band! I got a bit carried away today and >> pushed it up to 25 inches, and had to go full rich, so will have to twea= k >> the EC2 some more above 16 inches. So far I=E2=80=99m very happy with t= he temps >> while doing the ground runs, and with OATs from 90-95 degrees, the max >> water temp has been 178 degrees, and oil temp only 148. I=E2=80=99ve be= en able to >> run 30 minutes straight without a cowling, without any temp issues, so a= m >> wondering if I=E2=80=99m going to be too cool once I start flying it?? = :) >> >> Doug >> >> [image: IMG_9906.jpg] >> >> --0000000000001c0b50062450a6b7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
If = you're talking about putting the exit there, it would have to be near t= he front of the cowl, near the prop. (Been done with a/c engines; see Garrison Melmoth 2). But as you get closer to the windshield, external pressure goes=C2=A0w= ay up, so the air would try to go *down* instead of up.

On Sat, Oct 12, 2024 at 2:38=E2=80=AFPM Rob M= cMillan robmcmillanpls@gmail.co= m <flyrotary@lancairo= nline.net> wrote:
Dumb Question here!=C2=A0
Why don't we put cooling on the top of the cow= l?

Seems like the heat w= ould come out better...


On Sat, Oct 12, 20= 24, 11:50=E2=80=AFAM David COOK hoursaway1@comcast.net <flyrotary@lancaironline.net> w= rote:
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Cowl on for cooling= tests. We had good #s with it off then found not enough airflow with cowl = on and had to add some out-venting to the bottom of the cowl with simple SS= marine louvers. David
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On 10/11/2024 9:15 PM EDT Doug Lomheim rv9flyer13b@gmail.com <= ;flyrotary@lancaironline.net> wrote:
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I now have 4.2 hrs. of ground run time = on the 13B I rebuilt in Feb/Mar, and will now drop the oil and replace with= Mobile One=C2=A0and keep exploring the upper limits of the power band!=C2= =A0 I got a bit carried away today and pushed it up to 25 inches, and had t= o go full rich, so will have to tweak the EC2 some more above 16 inches.=C2= =A0 So far I=E2=80=99m very happy with the temps while doing the ground run= s, and with OATs from 90-95 degrees, the max water temp has been 178 degree= s, and oil temp only 148.=C2=A0 I=E2=80=99ve been able to run 30 minutes=C2= =A0straight=C2=A0without a cowling, without any temp issues, so am wonderin= g if I=E2=80=99m going to be too cool once I start=C2=A0flying it?? =C2=A0:= ) =C2=A0
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Doug=C2=A0
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