X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) From: "Le Roux Breytenbach breytenbachleroux@gmail.com" Received: from mail-ed1-f42.google.com ([209.85.208.42] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1367955 for flyrotary@lancaironline.net; Fri, 02 Apr 2021 02:30:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.42; envelope-from=breytenbachleroux@gmail.com Received: by mail-ed1-f42.google.com with SMTP id o19so4480374edc.3 for ; Thu, 01 Apr 2021 23:30:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:in-reply-to:to; bh=4OltJv56Ctq12nzs+vafmV6brVEfWo4fOEy5FKlkyGw=; b=HEwrYTvbsx+Eb2d0QRE6y7IUJ4aoXKEOQaJi4bLkBXHkPYA4WsU9fveCPkkHiJtfHC vzAOmvxS8H6X2wyC+MF4IxzNLy9OIA9AjCPKBxAIau/RFUhD6KblyV5sz4ABRG9ZTqpX horOjQTvz1ppefmDCsZtE9++t0NmrFFKxIoZUggI92Iwq4E3RfYlZaluwyCRaKTgnsd0 Gdh3+EPSjZ1+Qi6rBvrmWit47w6miN9+0nBVvL+rLYmfKj8Gr0psXGNcj/WTl2pjnG+J H1Yqu3DIt9cNjh77Lq1nprcM4VAtbZOdC/wzLNqCjvUUyaUA5Oq6sNUwJ6G6JTAcm8KL cF2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:in-reply-to:to; bh=4OltJv56Ctq12nzs+vafmV6brVEfWo4fOEy5FKlkyGw=; b=CTJ3n+zfz8nsTrl7Qe90/xdRY9A42++t9SluZCuC3sLRe3PMR/fYLLOQhDyZDoG/PV Mj+SRy8uP4JbmXqbZMyrRoMv52xIYsV3EHD/Z4ifRUNEzprbgE5x2xXSo5ctCheOeS9V G5AdLGsOB6gfOCFzpZcIcMbB1lQbkwi1DkL4s+xB57/qGWZWC4zyiY47sCPrPjUdzBtG QA9o2AtFVwXjI6Nd5FadXwgop7aUrnTkdbJcfxurpnIZZ6V8AtVV3YSWkET3i7R6KpTl TfjB1MjjgjWhKPRoTabDB14AXSKHEc1Sj+zPxqLVFDXsr4KZQ60cFuu1WPR/8N5ZBNrJ 85pQ== X-Gm-Message-State: AOAM532o6wKdLdLf+iRlKWbA1D78VC5lsMfKoBngwjfBhtyWOlhBcTOS rW9aMch7YiIwHvsbc9QrQv3mRqHIfX7cxQ== X-Google-Smtp-Source: ABdhPJzUKrc8aVz6TECjssSE9tsdxv77Fyv0ocAR9Oqt1EPnqo2BxAtUUhgK86yMKT++3I2FLv6UAw== X-Received: by 2002:a05:6402:145a:: with SMTP id d26mr13821411edx.182.1617344990261; Thu, 01 Apr 2021 23:29:50 -0700 (PDT) Return-Path: Received: from [192.168.1.122] ([160.226.139.191]) by smtp.gmail.com with ESMTPSA id p3sm3803368ejd.7.2021.04.01.23.29.49 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 01 Apr 2021 23:29:50 -0700 (PDT) Content-Type: multipart/alternative; boundary=Apple-Mail-1D3BEA5E-A1C8-4B70-ABBD-53644A43DE2A Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Subject: Re: [FlyRotary] Re: MISTRAL Date: Fri, 2 Apr 2021 08:29:47 +0200 Message-Id: <3193232F-2286-42AC-8F39-D97CFB84632E@gmail.com> References: In-Reply-To: To: Rotary motors in aircraft X-Mailer: iPhone Mail (17H35) --Apple-Mail-1D3BEA5E-A1C8-4B70-ABBD-53644A43DE2A Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable >=20 > =EF=BB=BFCharlie sorry, yes you are right a phonecall got in the way and a= te my mail =F0=9F=99=88=F0=9F=99=88 > Here is a link - of a RX7 forum https://www.rx7club.com/general-rotary-tech-support-11/heres-how-figure-out-= intake-runner-length-199788/ > Scroll down and read only what you need.Very interesting how this guy calc= ulate to determine the runner lenghts. > Further down on runner lenght calculations they talk about the Renesis mot= or runner lenght. > Yes this is for car use but there is a lot of info what we need for tuning= the rotary on the =E2=80=9Csweet spot=E2=80=9D rpm. > The aquistic waves and speed of the intake air is very interesting=20 >=20 > Regards >=20 > Sent from my iPhone > Le Roux Breytenbach=20 >=20 >> On 02 Apr 2021, at 00:52, Charlie England ceengland7@gmail.com wrote: >>=20 >> =EF=BB=BFHey Le Roux, >> I think your iphone ate your homework. ;-) >> Part of the message seems to be missing. >>=20 >> Charlie >>=20 >>>> On 4/1/2021 4:35 PM, Le Roux Breytenbach breytenbachleroux@gmail.com wr= ote: >>> Check this thread about intake runner lenght,anwers on a lott of 13B eng= ines and intake runner lenght and >>>=20 >>> Sent from my iPhone >>> Le Roux Breytenbach >>>=20 >>>>> On 01 Apr 2021, at 19:23, Charlie England ceengland7@gmail.com wrote: >>>>=20 >>>> =EF=BB=BF4 port or 6 port? It's been a long time since I had the manifo= ld off the engine, but I *think* my 4 port engine has same size pri & sec po= rts. I know I used the same size tubing to make the manifold. I believe that= the '3rdary' ports on a 6 port are smaller, but I think Steve Boese found t= hat they don't do anything at our more reasonable rpms. >>>>=20 >>>> Charlie >>>>=20 >>>>> On 4/1/2021 12:05 PM, Finn Lassen finn.lassen@verizon.net wrote: >>>>> Thanks Ed. >>>>>=20 >>>>> What I meant to say is that Tracy implied that secondary runners shoul= d have a larger diameter. >>>>>=20 >>>>> But I made them the same (inside diameter) as the holes in the block (= 30 mm). >>>>>=20 >>>>> Finn >>>>>=20 >>>>>> On 4/1/2021 11:07 AM, eanderson@carolina.rr.com wrote: >>>>>> Smaller dia may mean that airflow velocity is higher than in the prim= aries and since the secondary valves open at higher rpms, the higher airflow= velocity may help stuff more air into the chamber give the shorter duration= the port is open at higher rpm. Just a WAG. >>>>>>=20 >>>>>> Ed >>>>>>=20 >>>>>> ------ Original Message ------ >>>>>> From: "Finn Lassen finn.lassen@verizon.net" >>>>>> To: "Rotary motors in aircraft" >>>>>> Sent: 4/1/2021 8:48:31 AM >>>>>> Subject: [FlyRotary] Re: MISTRAL >>>>>>=20 >>>>>>> Tracy remarked on my secondary runners being smaller diameter than p= rimaries and now I see the same here. >>>>>>>=20 >>>>>>> If I recall correctly, when I calculated the area of the secondaries= vs the area of the primaries (in the engine block) I got smaller secondarie= s than primaries. >>>>>>>=20 >>>>>>> What gives? >>>>>>>=20 >>>>>>> Finn >>>>>>>=20 >>>>>>> On 3/31/2021 9:44 PM, Kelly Troyer keltro@gmail.com wrote: >>>>>>>> Primary Runner length approximately........24 inches >>>>>>>> Primary Runner "OD" approximately.........1.40 inches >>>>>>>> Secondary Runner length approximately.....24 inches >>>>>>>> Secondary Runner "OD" approximately.......1.66 inches >>>>>>>=20 >>=20 >>=20 >> --=20 >> This email has been checked for viruses by Avast antivirus software. >> https://www.avast.com/antivirus >>=20 >>=20 >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Lis= t.html >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html --Apple-Mail-1D3BEA5E-A1C8-4B70-ABBD-53644A43DE2A Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable


=EF=BB=BFCharlie sorry, yes you are right a phonecall got in= the way and ate my mail =F0=9F=99=88=F0=9F=99=88
Here is a l= ink - of a RX7 forum

https://www.rx7club.com/general-rotary-tech-su= pport-11/heres-how-figure-out-intake-runner-length-199788/

Scroll down and read only what y= ou need.Very interesting how this guy calculate to determine the runner leng= hts.
Further down on runner lenght calculations they talk ab= out the Renesis motor runner lenght.
Yes this is for car use= but there is a lot of info what we need for tuning the rotary on the =E2=80= =9Csweet spot=E2=80=9D rpm.
The aquistic waves and speed of t= he intake air is very interesting

Regards<= /span>

Sent from my iPhone
Le Roux= Breytenbach

On 0= 2 Apr 2021, at 00:52, Charlie England ceengland7@gmail.com <flyrotary@lan= caironline.net> wrote:
<= span>
=EF=BB=BFHey Le= Roux,
I think your i= phone ate your homework. ;-)
Part of the message seems to be missing.

Charlie

On 4/1/2021 4:35 PM, Le Roux Breytenbach breytenbachleroux@gmail.com wrote:=
Check this thread about intake runner lenght,anwers on a l= ott of 13B engines and intake runner lenght and
Sent from my iPhone
Le Roux Breytenbach

On 01 Apr 2021, at 19:23, Charlie England ceengland7@gmail.com <flyro= tary@lancaironline.net> wrote:

=EF=BB=BF4 port or 6 port? It's been a long time since I had the m= anifold off the engine, but I *think* my 4 port engine has same size pri &am= p; sec ports. I know I used the same size tubing to make the manifold. I bel= ieve that the '3rdary' ports on a 6 port are smaller, but I think Steve Boes= e found that they don't do anything at our more reasonable rpms.
<= /blockquote>

Charlie

On 4/1/2021 12:05 PM, Finn Lassen finn.lassen@verizo= n.net wrote:
<= blockquote type=3D"cite">
Thanks Ed.

<= /blockquote>
What I meant to say is that Tracy implied that secondary runners sh= ould have a larger diameter.

But I m= ade them the same (inside diameter) as the holes in the block (30 mm).

=
Finn
<= /blockquote>

On 4/1/2021 11:07 AM, eanderson@carolina.rr.co= m wrote:
Smaller d= ia may mean that airflow velocity is higher than in the primaries and since t= he secondary valves open at higher rpms, the higher airflow velocity may hel= p stuff more air into the chamber give the shorter duration the port is open= at higher rpm.  Just a WAG.

=
Ed<= /span>
<= blockquote type=3D"cite">

------ Original Message ------=
From: "Finn Lassen finn= .lassen@verizon.net" <flyrotary@lancaironline.net>
To: "Rotary motors in aircraft" <f= lyrotary@lancaironline.net>
Sent: 4/1/2021 8:48:31 AM
<= /blockquote>
Subject: [FlyRotary] Re: MISTRAL

Tracy remarked on my secondar= y runners being smaller diameter than primaries and now I see the same here.=
=

If I recall correctly, when I c= alculated the area of the secondaries vs the area of the primaries (in the e= ngine block) I got smaller secondaries than primaries.

What gives?
=

<= span>Finn
=

On 3/31/2021 9:44 PM,= Kelly Troyer keltro@gmail.com wrote:
=
Primary Runner length approximately........24 inches
<= /blockquote>
Primary Runner "OD"  app= roximately.........1.40 inches
Secondary Runner length approximately.....24 inches
<= /blockquote>
Secondary Runner "OD" appr= oximately.......1.66 inches

=


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