X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ob0-f179.google.com ([209.85.214.179] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6652650 for flyrotary@lancaironline.net; Wed, 25 Dec 2013 10:10:22 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.179; envelope-from=msteitle@gmail.com Received: by mail-ob0-f179.google.com with SMTP id wm4so7585095obc.38 for ; Wed, 25 Dec 2013 07:09:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:content-type:in-reply-to:message-id:date:to :content-transfer-encoding:mime-version; bh=e/d9TDA864APxip89imLFm8VWzRH3WaUtRQGtQxt/Vg=; b=ynNqV0fKVDgBVycSb/qEO+nMbjYElMHkwVPEj1ycXYpW5/IPHwTzPSLGdUDJoT4Q3R h36JUCr9idLJjAsDyVdy8H6SfdeauTs2pSNfzlwnLNGMVE8BIJDnFttlH6ESpOxbYUke BUcIUInmyfEX8OHDIjmUhQYVJAarHZFL+4tvHJAunJA+uxZVki1w9zSvEb3+sq3M7cDs 9miRmhv0Qtvf/bIl7jyP5gRq2fUZKR+XjT2N+z12N5Sog03QTEc34/3D8thTjSUWzV0a ZYMCuWQcVpyCjNazmYVg8QFENXe/F6bGS/sMKyb1pbn7fUbakkUgBiYiuV19nfHkmlol m8Kw== X-Received: by 10.60.97.36 with SMTP id dx4mr15519223oeb.40.1387984187907; Wed, 25 Dec 2013 07:09:47 -0800 (PST) Return-Path: Received: from [192.168.1.102] (cpe-173-172-120-114.austin.res.rr.com. [173.172.120.114]) by mx.google.com with ESMTPSA id ru3sm33016312obc.2.2013.12.25.07.09.46 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 25 Dec 2013 07:09:46 -0800 (PST) Subject: Re: [FlyRotary] Re: Renesis with 76 X 88 prop References: From: Mark Steitle Content-Type: multipart/alternative; boundary=Apple-Mail-73788AFF-5756-4AE7-B346-0B1F2E90F24C X-Mailer: iPad Mail (11B554a) In-Reply-To: Message-Id: <1A956964-9A6F-402D-BD99-09954207704D@gmail.com> Date: Wed, 25 Dec 2013 09:09:47 -0600 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-73788AFF-5756-4AE7-B346-0B1F2E90F24C Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Bill, How restrictive is your exhaust? I ask because I experienced a 200 degree i= ncrease in the EGTs on my 3-rotor when I tried a tangential style muffler. I= hadn,t made the connection until Lynn Hanover posted a message about how se= nsitive the rotary is to exhaust back pressure. That,s when I figured out w= hat caused the increased EGTs, increased back pressure. I reinstalled the o= ld exhaust and the EGTs mysteriously dropped back into the normal range. Co= uld this be the source of your high EGTs? Mark S. Sent from my iPad > On Dec 23, 2013, at 9:16 PM, "Bill Bradburry" w= rote: >=20 > Neil, > Are both the intake and exhaust P ported? How did you do it? How did you= block off the side irons? I doubt there is anything wrong with our timing o= r advance. I have a stock Renesis and I get EGTs from 1725 to the middle 18= 00s. > How close to the engine are your probes? > =20 > Bill > =20 > =20 > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Be= half Of Neil Unger > Sent: Monday, December 23, 2013 6:40 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Renesis with 76 X 88 prop > =20 > Dennis, > I have a P ported renesis and am seeing EGT up to 1850. Hav= ing talked with various people with far more knowledge than myself, who sugg= est it may be that the spark should be advanced up to around 30 BTDC. to red= uce the EGT. Rather than destroy the motor finding out, I am looking at gett= ing the engine onto a dyno to clarify the timing and EGT=E2=80=99s. Should b= e very interesting to say the least. No one works here until the first half= of Jan has passed in this banana republic of OZ. > =20 > From: Dennis Havarlah > Sent: Tuesday, December 24, 2013 8:07 AM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Renesis with 76 X 88 prop > =20 > =20 > =20 > I've had server issues this week and could not send this until today. > =20 > Bill > =20 > I actually have the RD1-C PSRU. (My Bad.) Tracy started selling these abou= t 6-7 years ago for use with the Renesis. > The prop turns clockwise from the pilot's seat view. > I normally see EGT's in the high 1750 F. during full power takeoff and ear= ly climb. It will go above 1800 F. if the mixture is real close to best powe= r. I have my EM-2 set to warn me if the EGTs go above 1800. > =20 > Dennis H. > =20 --Apple-Mail-73788AFF-5756-4AE7-B346-0B1F2E90F24C Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Bill,
How restrictive is you= r exhaust?  I ask because I experienced a 200 degree increase in the EG= Ts on my 3-rotor when I tried a tangential style muffler.  I hadn,t mad= e the connection until Lynn Hanover posted a message about how sensitive the= rotary is to exhaust back pressure.  That,s when I figured out what ca= used the increased EGTs, increased back pressure.   I reinstalled the o= ld exhaust and the EGTs mysteriously dropped back into the normal range. &nb= sp;Could this be the source of your high EGTs?

Mark= S.

Sent from my iPad

On Dec 23, 2013, at 9:16 PM, "Bil= l Bradburry" <bbradburry@bell= south.net> wrote:

=

Neil,

Are both the intake and exhaust P porte= d?  How did you do it?  How did you block off the side irons?  I doubt= there is anything wrong with our timing or advance.  I have a stock Ren= esis and I get EGTs from 1725 to the middle 1800s.

How close to the engine are your probes= ?

 

Bill

 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironli= ne.net] On Behalf Of Neil Unger
Sent: Monday, December 23, 20= 13 6:40 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rene= sis with 76 X 88 prop

 

Dennis,

  &n= bsp;           I have a P ported renesis and am seeing EGT up to 1850.  Having talked with various people with far more knowledge than myself, who suggest it may b= e that the spark should be advanced up to around 30 BTDC. to reduce the EGT. Rather than destroy the motor finding out, I am looking at getting the engin= e onto a dyno to clarify the timing and EGT=E2=80=99s.  Should be very interesting to say the least.  No one works here until the first half o= f Jan has passed in this banana republic of OZ.

 

Sent: Tuesday, December 24, 2013 8:07 AM

Subject: [FlyRotary] Re: Renesis with 76 X 88 prop

 

 

 

I've had server issues this week and could not send this until today.

 

Bill

 

I actually have the RD1-C PSRU. (My Ba= d.) Tracy st= arted selling these about 6-7 years ago for use with the Renesis.

The prop turns clockwise from the pilo= t's seat view.

I normally see EGT's in the high 1750 = F. during full power takeoff and early climb. It will go above 1800 F. if the mixture is real close to best power. I have my EM-2 set to warn me if the EG= Ts go above 1800.

 

Dennis H.

=

 

= --Apple-Mail-73788AFF-5756-4AE7-B346-0B1F2E90F24C--