X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=PbaBeRpd c=1 sm=1 tr=0 a=4Z7bLzRdO3NTdMHb7ZukIA==:117 a=x7bEGLp0ZPQA:10 a=ad1WmcueCrwA:10 a=_RQrkK6FrEwA:10 a=UKPAHat8AAAA:8 a=Ia-xEzejAAAA:8 a=pGLkceISAAAA:8 a=7g1VtSJxAAAA:8 a=jThZ7_-JAAAA:8 a=PkJAwnvQmuEL8om-sLQA:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=Pavkp-Ul6yqxjv4M3rAA:9 a=DCwsMXy9MmIsdfQK:21 a=Fc6xXSS-RxGHxrvp76Qp:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 a=NVbvhy2gKIdozzgvQOKv:22 From: "William Jepson wrjjrs@gmail.com" Received: from mail-lj1-f178.google.com ([209.85.208.178] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 543151 for flyrotary@lancaironline.net; Sat, 18 Jul 2020 15:57:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.178; envelope-from=wrjjrs@gmail.com Received: by mail-lj1-f178.google.com with SMTP id j11so16270771ljo.7 for ; Sat, 18 Jul 2020 12:57:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=cUOt04YzvSAGxVLrUfJecEhoC2yv+uc56acqzuRCwNQ=; b=N8K1R/2n+1KgMNUxyimHxS0lHLkw7ELrDaQU8EF3TsxuZvwwYUC+VfgNHLH252i9Gx FDTvZi50ADD8RO1QW/CG/W7XJ4dZtHxOBueA1Gd45i2C4CZx0eaBZh/ZiEJw4xj8u4lB 1b376blNXi97OBvNOypcfp306OkC0exeovT0FLqvFCQ0fzv/q95cYu6Lzmj0Emq5vNYY I/JXsKUcfHNcN5CkqTGrCG6V21OA7orcGMXq44D7u1qtjBmWt1OILVLH/ULtwFI7WKIn ICl+T8/YAhleIeUAuB/tTzRqM45pzo3URiBrvdNcW1yPXLbeNAJ8s/SHdQs5DslpEKHC bp2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=cUOt04YzvSAGxVLrUfJecEhoC2yv+uc56acqzuRCwNQ=; b=G3QattxY16vHw00t7saOi2fDxmEmVKeM00XgMEeyK3DKDSRq9Oah67Abl5o20pDmi7 00e9YvtCvCFFiOh8lt/SmGr73lCDFnftMvbw3QZZ4fUpzWieAa07/Ha2aM0f9Kt+IU90 7R9MXQIQ+Anu9DMo1Y198zW2jG+4ojpjeTIfkGrBXf9/xRNtXvz5z4v9AH07riOVURjB iwE0OrdPI9YPPYWxdoKPAfWmiu9Dr7RVJCY71b6aJoafZ9MtEc0a344TsR3R8EI2WHqo TqcM6rTmgSY1n/CdSQmhvJrHMR/qjAI/U2TEZBZx7r14v2Fc6R0ZlsnYNIls5fkQWBAt rvVg== X-Gm-Message-State: AOAM531/mP/GINIPdHS4g0dLv34oS5IbbZF5nhYY0i6ZJ8QdYFLgU0TZ nDlOq+3S+3r6aUuZPjOeZykdAgfhHCRO/EM1g9ZqSPaW X-Google-Smtp-Source: ABdhPJzeYznv7D053oyr79AOpbcL24aTdjfQN+LZ4B3o83jwE/jMPUZPUJNMULIuFr11pomahutp1OrvNuT2PaJMg30= X-Received: by 2002:a2e:8653:: with SMTP id i19mr6236649ljj.95.1595102220102; Sat, 18 Jul 2020 12:57:00 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Sat, 18 Jul 2020 12:56:52 -0700 Message-ID: Subject: Re: [FlyRotary] Re: over square and detonation of a rotary for my pilot friend To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="00000000000035b01c05aabcad4e" --00000000000035b01c05aabcad4e Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Bobby, I understand you have considerable time with your engine. I'm surprised at the A/F ratio. I'm passing along the info I have received from the original Powersport guys. Of course you are supercharged right? Or did you convert to turbo? The Powersport (original) guys were always NA. Steve told me that rich of peak was just rich of stoichiometric at about 13:1. Lean of peak could go to 16:1 or more. It of course isn't an apples to apples comparison with the engine supercharged. Just an FYI comment. With the intake air heated it would certainly skew the reading. Bill On Sat, Jul 18, 2020 at 4:57 AM Bobby J. Hughes bhughes@qnsi.net < flyrotary@lancaironline.net> wrote: > Bill, > > These setting worked best for me. I did my 8-10 hour days between Texas, > Delaware, Ohio, etc with a lot of time to experiment. Of course takeoff > F/A was in the 12=E2=80=99s and water injection at 38-40=E2=80=9D MP unl= ess it was really > cold. No heat exchanger for the super charger. EGT under 1600F and > intake temp under 140F were my targets. 93 octane usually with alcohol or > 100LL. > > > Bobby > > Sent from my iPad > > On Jul 17, 2020, at 9:05 PM, William Jepson wrjjrs@gmail.com < > flyrotary@lancaironline.net> wrote: > > =EF=BB=BF > Bobby, unless you have too much timing lead or exceptionally crappy gas i= t > is unusual to detonate. That air/fuel ratio is rather bad place. Lean mor= e > or run rich of peak. > Bill > > On Fri, Jul 17, 2020 at 7:00 PM Bobby J. Hughes bhughes@qnsi.net < > flyrotary@lancaironline.net> wrote: > >> My preferred cruise economy settings 30=E2=80=9D MP, 4800-5200 rpm. F/A = 15:8 >> lean. Or 30-34=E2=80=9D MP, 5200-5400 rpm F/A 14:0 or whatever was need = to keep EGT >> below 1600F and intake air temp below 140F. >> >> >> >> Bobby >> >> >> >> *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] >> *Sent:* Friday, July 17, 2020 7:10 PM >> *To:* Rotary motors in aircraft >> *Subject:* [FlyRotary] over square and detonation of a rotary for my >> pilot friend >> >> >> >> Hi people. >> >> My test pilot friend and I are continuing our journey of extending the >> phase#1 envelope and now experimenting with engine settings. >> With a flight adjustable prop he is asking questions about 'over square' >> and detonation. >> Can anyone give me an answer for him? >> >> Thanks >> >> Steve Izett >> Glasaie Super IIRG Renesis 4 port RD1C variable pitch prop. >> >> >> >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> >> *Disclaimer* >> >> The information contained in this communication from the sender is >> confidential. It is intended solely for use by the recipient and others >> authorized to receive it. If you are not the recipient, you are hereby >> notified that any disclosure, copying, distribution or taking action in >> relation of the contents of this information is strictly prohibited and = may >> be unlawful. >> >> This email has been scanned for viruses and malware, and may have been >> automatically archived by *Mimecast Ltd*, an innovator in Software as a >> Service (SaaS) for business. Providing a *safer* and *more useful* place >> for your human generated data. Specializing in; Security, archiving and >> compliance. To find out more Click Here >> . >> > --00000000000035b01c05aabcad4e Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Bobby,
I understand you have=C2=A0co= nsiderable time with your engine. I'm surprised=C2=A0 at the A/F ratio.= I'm passing along the info I have received from the original Powersport guys. Of= course you are supercharged right? Or did you convert to turbo? The Powersport (orig= inal) guys were always NA. Steve told me that rich of peak was just=C2=A0ri= ch of=C2=A0st= oichiometric=C2=A0at about 13:1. Lean of peak could go to 16:1 or mo= re. It of course isn't=C2=A0an apples=C2=A0to apples comparison with th= e engine supercharged. Just an FYI comment. With the intake air heated it w= ould certainly skew the reading.=C2=A0
Bill

On Sat, Jul = 18, 2020 at 4:57 AM Bobby J. Hughes bhu= ghes@qnsi.net <flyrot= ary@lancaironline.net> wrote:
Bill,

These setti= ng worked best for me.=C2=A0 I did my 8-10 hour days between Texas, Delawar= e, Ohio, etc with a lot of time to experiment. Of course takeoff =C2=A0F/A = was in the 12=E2=80=99s and water injection at 38-40=E2=80=9D MP unless it = was really cold.=C2=A0 No heat exchanger for the super charger.=C2=A0 EGT = =C2=A0under 1600F and intake temp under 140F were my targets. 93 octane usu= ally with alcohol or 100LL.=C2=A0


B= obby=C2=A0

Sent from my iPad

On Jul 17, 2020, at 9:05 PM, Will= iam Jepson wrjjrs@gma= il.com <flyrotary@lancaironline.net> wrote:

<= blockquote type=3D"cite">
=EF=BB=BF
B= obby, unless you have too much timing lead or exceptionally crappy gas it i= s unusual to detonate. That air/fuel ratio is rather bad place. Lean more o= r run rich of peak.
Bill

On Fri, Jul 17, 2= 020 at 7:00 PM Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:
<= div>

My preferred cruise economy settings 30= =E2=80=9D MP, 4800-5200 rpm. F/A 15:8 lean. Or 30-34=E2=80=9D MP, 5200-5400= rpm F/A 14:0 or whatever was need to keep EGT below 1600F and intake air t= emp below 140F.

= =C2=A0

Bobby<= /u>

=C2=A0

From:= Ro= tary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Fri= day, July 17, 2020 7:10 PM
To: Rotary motors in aircraft
Su= bject: [FlyRotary] over square and detonation of a rotary for my pilot = friend

= =C2=A0

Hi people.

My test pilot fri= end and I are continuing our journey of extending the phase#1 envelope and = now experimenting with engine settings.
With a flight adjustable prop he= is asking questions about 'over square' and detonation.
Can an= yone give me an answer for him?

Thanks

Steve Izett
Glasaie= Super IIRG Renesis 4 port RD1C variable pitch prop.




--
Homepage: htt= p://www.flyrotary.com/
Archive and UnSub: http://mail.= lancaironline.net:81/lists/flyrotary/List.html



Disclaimer

The information contained in this communication from th= e sender is confidential. It is intended solely for use by the recipient an= d others authorized to receive it. If you are not the recipient, you are he= reby notified that any disclosure, copying, distribution or taking action i= n relation of the contents of this information is strictly prohibited and m= ay be unlawful.

This email has been scanned for viruses and malware,= and may have been automatically archived by Mimecast Ltd, an innova= tor in Software as a Service (SaaS) for business. Providing a safer= and more useful place for your human generated data. Specializing = in; Security, archiving and compliance. To find out more Click Here.

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