X-Virus-Scanned: clean according to Sophos on Logan.com From: "=?utf-8?b?SmFycmV0dCBKb2huc29u?=" Received: from mail105c7.megamailservers.com ([69.49.98.205] verified) by logan.com (CommuniGate Pro SMTP 6.1.9) with ESMTPS id 8574674 for flyrotary@lancaironline.net; Wed, 13 Apr 2016 14:44:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=69.49.98.205; envelope-from=hjjohnson@sasktel.net Received: from mail105c7.megamailservers.com (localhost [127.0.0.1]) by mail105c7.megamailservers.com (8.14.9/8.13.1) with ESMTP id u3DIhwr2016571 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Wed, 13 Apr 2016 14:43:58 -0400 Received: (from webmail@localhost) by mail105c7.megamailservers.com (8.14.9/8.12.2/Submit) id u3DIhu7o016471 for flyrotary@lancaironline.net; Wed, 13 Apr 2016 14:43:56 -0400 Received: from 71-17-141-63.msjw.static.sasknet.sk.ca (71-17-141-63.msjw.static.sasknet.sk.ca [71.17.141.63]) by webmail.sasktel.net (Webmail 5.0 V.V.I.) with HTTP for ; Wed, 13 Apr 2016 12:43:56 -0600 Message-ID: <20160413124356.mm4iv2dsoc0kwwsk@webmail.sasktel.net> Reply-to: hjjohnson@sasktel.net To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Intake Styles and Data Date: Wed, 13 Apr 2016 12:43:56 -0600 X-Priority: 3 X-Authenticated-User: hjjohnson.sasktel.net References: In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="=_3gvspl5noga4" Content-Transfer-Encoding: 7bit User-Agent: Webmail 6.0 X-CTCH-RefID: str=0001.0A020206.570E936E.01D8,ss=1,re=2.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 2.000 X-CTCH-Rules: FREEMAIL_REPLYTO, X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 X-CSC: 0 X-CHA: v=2.1 cv=dYu5gxne c=1 sm=1 tr=0 a=WkljmVdYkabdwxfqvArNOQ==:117 a=qviBkPFKkSnY9mjABRfr0A==:17 a=L9H7d07YOLsA:10 a=9cW_t1CCXrUA:10 a=s5jvgZ67dGcA:10 a=ikZSrtty1KYA:10 a=Sy1IecH1EJAA:10 a=kziv93cY1bsA:10 a=G-JvYgQUlsIBVzUhMCsA:9 a=Ia-xEzejAAAA:8 a=a4NEJbfMAAAA:8 a=UretUmmEAAAA:8 a=yhHO0vgTr9yKwmVwYvMA:9 a=OCrsaDJXzSg7YgnO:21 a=d1HMTTmzlwR2NUpt:21 a=QEXdDO2ut3YA:10 a=yMhMjlubAAAA:8 a=oYw-39QZ5d_QFvi5fi4A:9 a=r4vG3rA7ofSfoRRf:21 a=EBVAIylyip-EqQBg:21 a=T5buhqvM0WBrzsH2:21 a=_W_S_7VecoQA:10 This message is in MIME format. --=_3gvspl5noga4 Content-Type: text/plain; charset=UTF-8; format="flowed" Content-Description: Plaintext Version of Message Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Thanks Lynn, do you have any guidance on runner diameters vs their length. From everything that I've read thus far it would point to a nearly 20" runner length but I've not read much about what diameters. =C2=A0 Lots to learn in the (my?) future :) =C2=A0 Jarrett On Mon, 11 Apr 2016 15:38:10 -0400, Lehanover wrote: For intake lengths, the ideal is the enemy of the good. There is only one perfect length and diameter for each full throttle RPM. So a very large number of lengths and diameters work very well for AC use. Tracy's Race winning engine had rather short compact tube lengths and outran everybody. My racer has 170 HP at 6,500 RPM and 250 HP at 9,600 RPM from a 12A engine with 2292 CCs. This with a very large bridge port. The 13Bs you are building are bigger with 2,606CCs. =C2=A0 The engines tune like a 2 cycle dirt bike. The exhaust system makes a far bigger difference than does the intake design. My Drummond built race engines us a stock intake manifold gasket. The intake runners are polished but NOT enlarged. You want the highest possible intake flow velocity at every RPM. The intake manifold to mount a Weber 48 IDF has a plenum below each throat so the actual runner length is=C2=A0very short. This in turn tunes a bit better at stupid high RPM but works well enough to deliver good performance above 6,000 RPM.=C2=A0You would not have= to add much length beyond the stock lower manifold to be about perfect for aircraft use. The HP is in the exhaust system. The side port engines have fewer degrees of overlap than does a Pport (Massive overlap). Renesis has no overlap at all. Smoother the idle=C2=A0for less the overlap. =C2=A0 Lynn E. Hanover Racing rotaries since 1980. =C2=A0=C2=A0=C2=A0=C2=A0 =C2=A0 In a message dated 4/11/2016 12:38:17 P.M. Eastern Daylight Time, flyrotary@lancaironline.net writes: Actually on paper I=E2=80=99m still the CEO of the company but all t= he day to day operations are handled by Laura since my retirement.=C2=A0 She has been a great business partner. =C2=A0 Tracy =C2=A0 =C2=A0 Sent from Mail for Windows 10 =C2=A0 From: ARGOLDMAN Sent: Monday, April 11, 2016 8:29 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Intake Styles and Data =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Thanks for the link. =C2=A0 =C2=A0 =C2=A0 Actually, The company is owned by Laura, Tracy's EX.=C2=A0 (reminds me of the license plate of a Mercedes, in my area," WAS HIS" =C2=A0 =C2=A0 =C2=A0 Although they don't have aviation parts any more, they still stock a complete line of Tracy's seals, rebuild kits=C2=A0etc. =C2=A0 =C2=A0 =C2=A0 Rich =C2=A0 =C2=A0 =C2=A0 In a message dated 4/10/2016 9:28:09 P.M. Pacific Daylight Time, flyrotary@lancaironline.net writes: =C2=A0 Sorry for lack of detailed info; I was away from home & pecking at my phone to reply. Wayback machine: https://archive.org/web/ Tracy's old website was: http://www.rotaryaviation.com/ which no longer has aviation info on it (currently only car performance parts under different ownership). =C2=A0 =C2=A0 =3D --=_3gvspl5noga4 Content-Type: multipart/related; boundary="=_3sel4qe6l9ws"; start="3sf3x29a66b0@webmail.sasktel.net" Content-Transfer-Encoding: 7bit This message is in MIME format. --=_3sel4qe6l9ws Content-Type: text/html; charset=UTF-8 Content-Description: HTML Version of Message Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-ID: 3sf3x29a66b0@webmail.sasktel.net

Thanks Lynn, do you have any guidance on runner diameters vs their lengt= h. From everything that I've read thus far it would point to a nearly 20" runn= er length but I've not read much about what diameters.

=C2=A0

Lots to learn in the (my?) future :)

=C2=A0

Jarrett

On Mon, 11 Apr 2016 15:38:10 -0400, Lehanover <flyrotary@lancaironline.net> wrote:

For intake lengths, the ideal is the enemy of the good. There is only = one perfect length and diameter for each full throttle RPM. So a very large num= ber of lengths and diameters work very well for AC use. Tracy's Race winning en= gine had rather short compact tube lengths and outran everybody. My racer has 17= 0 HP at 6,500 RPM and 250 HP at 9,600 RPM from a 12A engine with 2292 CCs. This = with a very large bridge port. The 13Bs you are building are bigger with 2,606CCs.
=C2=A0
The engines tune like a 2 cycle dirt bike. The exhaust system makes a = far bigger difference than does the intake design. My Drummond built race engin= es us a stock intake manifold gasket. The intake runners are polished but NOT enlarged. You want the highest possible intake flow velocity at every RPM. = The intake manifold to mount a Weber 48 IDF has a plenum below each throat so t= he actual runner length is=C2=A0very short. This in turn tunes a bit better at= stupid high RPM but works well enough to deliver good performance above 6,000 RPM.= =C2=A0You would not have to add much length beyond the stock lower manifold to be abo= ut perfect for aircraft use. The HP is in the exhaust system. The side port en= gines have fewer degrees of overlap than does a Pport (Massive overlap). Renesis = has no overlap at all. Smoother the idle=C2=A0for less the overlap.
=C2=A0
Lynn E. Hanover
Racing rotaries since 1980. =C2=A0=C2=A0=C2=A0=C2=A0
=C2=A0
In a message dated 4/11/2016 12:38:17 P.M. Eastern Daylight Time, flyrotary@lancaironline.net writes:

Actually on paper I=E2=80=99m still the CEO of the c= ompany but all the day to day operations are handled by Laura since my retirement.=C2= =A0 She has been a great business partner.

=C2=A0

Tracy

=C2=A0

=C2=A0

Sent from Mail for Windows 10

=C2=A0

From: ARGOLDMAN
Sent: Monday, Apr= il 11, 2016 8:29 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Intake Styles and Data

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

Thanks for the link.

=C2=A0

=C2=A0

=C2=A0

Actually, The company is owned by Laura, Tracy's EX.=C2= =A0 (reminds me of the license plate of a Mercedes, in my area," WAS HIS"

=C2=A0

=C2=A0

=C2=A0

Although they don't have aviation parts any more, they st= ill stock a complete line of Tracy's seals, rebuild kits=C2=A0etc.

=C2=A0

=C2=A0

=C2=A0

Rich

=C2=A0

=C2=A0

=C2=A0

In a message dated 4/10/2016 9:28:09 P.M. Pacific Dayligh= t Time, flyrotary@lancaironline.net writes:

=C2=A0

Sorry for lack of detai= led info; I was away from home & pecking at my phone to reply.

Wayba= ck machine:
https://archive.org/web/

Tracy's old websit= e was:
http://www.rotaryaviation.com/
which= no longer has aviation info on it (currently only car performance parts under different ownership).

=C2=A0

=C2=A0

=3D



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