X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-dupuy.atl.sa.earthlink.net ([209.86.89.62] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6654000 for flyrotary@lancaironline.net; Thu, 26 Dec 2013 16:12:08 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.62; envelope-from=n360tg@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=W33a93OXBm0pDKYVdlAkmC2SL17NqcT4QEsEWMi50dWPQdXmPsyI8X2fD2I2sTX1; h=Received:Subject:References:From:Content-Type:X-Mailer:In-Reply-To:Message-Id:Date:To:Content-Transfer-Encoding:Mime-Version:X-ELNK-Trace:X-Originating-IP; Received: from [166.147.119.67] (helo=[172.20.10.7]) by elasmtp-dupuy.atl.sa.earthlink.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.67) (envelope-from ) id 1VwIDL-0003oE-4K for flyrotary@lancaironline.net; Thu, 26 Dec 2013 16:11:33 -0500 Subject: Re: [FlyRotary] Re: Renesis with 76 X 88 prop References: From: Thomas Giddings Content-Type: multipart/alternative; boundary=Apple-Mail-2B14DE51-987B-4269-9F0B-E4007D0BA431 X-Mailer: iPad Mail (11A501) In-Reply-To: Message-Id: <35E1929E-FDEC-4D36-81C8-DFB1BC4276B7@earthlink.net> Date: Thu, 26 Dec 2013 16:11:28 -0500 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) X-ELNK-Trace: 77b0437ff618fec294f5150ab1c16ac0eab4a5d23dc2aa85eec5429de5618ecf0147dfc7f2e3337b350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 166.147.119.67 --Apple-Mail-2B14DE51-987B-4269-9F0B-E4007D0BA431 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Thx Bill. That would be great Sent from my iPad > On Dec 26, 2013, at 12:27 PM, "Bill Bradburry" w= rote: >=20 > Tom, > I just looked thru my pictures. I don=E2=80=99t have a picture of the cur= rent setup. I will try to get one the next time I am out at the airport and= post it. > =20 > Bill > =20 > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Be= half Of Thomas Giddings > Sent: Thursday, December 26, 2013 9:30 AM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Renesis with 76 X 88 prop > =20 > Bill: Could you post a picture of your firewall forward set up including y= our exhaust system with the muffler.=20 > Thanks=20 > Tom giddings > Sent from my iPad >=20 >> On Dec 25, 2013, at 11:45 AM, "Bill Bradburry" = wrote: >> Mark, >> =20 >> It shouldn=E2=80=99t be restrictive. I am using the stock Renesis exhaus= t manifold which is cut off at the level of just prior to the flywheel. The= manifold is 3 inches in diameter at that point. I welded a 3 inch stainles= s pipe there which does a 180 bend with a radius of probably 4 inches. It t= hen goes into a 3 inch in/out DNA muffler, then 3 inch ss exhaust the rest o= f the way out. My EGTs have always been this high, even when I didn=E2=80=99= t have a muffler in the same setup. I have considered that the probes or th= e EM-2 may be incorrect, but I think that there is not much calibration requ= ired for a K type thermocouple. I think the probes are just closer to the e= ngine than most. >> =20 >> Bill >> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On B= ehalf Of Mark Steitle >> Sent: Wednesday, December 25, 2013 10:10 AM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Re: Renesis with 76 X 88 prop >> =20 >> Bill, >> How restrictive is your exhaust? I ask because I experienced a 200 degre= e increase 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 ho= w sensitive the rotary is to exhaust back pressure. That,s when I figured o= ut what caused the increased EGTs, increased back pressure. I reinstalled t= he old exhaust and the EGTs mysteriously dropped back into the normal range.= Could this be the source of your high EGTs? >> =20 >> Mark S. >>=20 >> Sent from my iPad >>=20 >>> On Dec 23, 2013, at 9:16 PM, "Bill Bradburry" = wrote: >>> Neil, >>> Are both the intake and exhaust P ported? How did you do it? How did y= ou block off the side irons? I doubt there is anything wrong with our timin= g or advance. I have a stock Renesis and I get EGTs from 1725 to the middle= 1800s. >>> How close to the engine are your probes? >>> =20 >>> Bill >>> =20 >>> =20 >>> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On B= ehalf 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. H= aving talked with various people with far more knowledge than myself, who su= ggest it may be that the spark should be advanced up to around 30 BTDC. to r= educe the EGT. Rather than destroy the motor finding out, I am looking at ge= tting the engine onto a dyno to clarify the timing and EGT=E2=80=99s. Shoul= d be very interesting to say the least. No one works here until the first h= alf 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 ab= out 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 e= arly climb. It will go above 1800 F. if the mixture is real close to best po= wer. I have my EM-2 set to warn me if the EGTs go above 1800. >>> =20 >>> Dennis H. --Apple-Mail-2B14DE51-987B-4269-9F0B-E4007D0BA431 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Thx Bill. That would be great

S= ent from my iPad

On Dec 26, 2013, at 12:27 PM, "Bill Bradburry= " <bbradburry@bellsouth.net> wrote:

=

Tom,

I just looked thru my pictures.  I= don=E2=80=99t have a picture of the current setup.  I will try to get one the next time I a= m out at the airport and post it.

 

Bill

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironli= ne.net] On Behalf Of Thomas Giddings
Sent: Thursday, December 26, 2= 013 9:30 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rene= sis with 76 X 88 prop

 

Bill: Could  you post a picture of your firewall forward set up= including your exhaust system with the muffler. 

Thanks 

Tom giddings
Sent from my iPad


On Dec 25, 2013, at 11:45 AM, "Bill Bradburry" <bbradburry@bellsouth.net> wrote:=

Mark,

 <= /o:p>

It shouldn=E2=80=99t be restrictive.&nb= sp; I am using the stock Renesis exhaust manifold which is cut off at the level of ju= st prior to the flywheel.  The manifold is 3 inches in diameter at that point.  I welded a 3 inch stainless pipe there which does a 180 bend wi= th a radius of probably 4 inches.  It then goes into a 3 inch in/out DNA muffler, then 3 inch ss exhaust the rest of the way out.  My EGTs have always been this high, even when I didn=E2=80=99t have a muffler in the same= setup.  I have considered that the probes or the EM-2 may be incorrect, but I think that there is not much calibration required for a K type thermocouple. = I think the probes are just closer to the engine than most.

 <= /o:p>

Bill

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]= On Behalf Of Mark Steitle
= Sent: Wednesday, December 25,= 2013 10:10 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rene= sis with 76 X 88 prop

 

Bill,

How restrictive is your exhaust?  I ask because I experienced a= 200 degree increase in the EGTs on my 3-rotor when I tried a tangential styl= e muffler.  I hadn,t made the connection until Lynn Hanover posted a mess= age about how sensitive the rotary is to exhaust back pressure.  That,s whe= n I figured out what caused the increased EGTs, increased back pressure.   I= reinstalled the old exhaust and the EGTs mysteriously dropped back into the normal range.  Could this be the source of your high EGTs?=

 

Mark S.

Sent from my iPad


On Dec 23, 2013, at 9:16 PM, "Bill Bradburry" <bbradburry@bellsouth.net> wrote:<= /o:p>

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 or advance.&nbs= p; I have a stock Renesis and I get EGTs from 1725 to the middle 1800s.

How close to the engine are your probes= ?

 =

Bill <= /u1:p>

 =

 =

From: Rotary motors in aircraft= [mailto:flyrotary@lancaironline.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,<= /u2:p>

  &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 in= teresting to say the least.  No one works here until the first half of 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<= /u1:p>

 

I actually have the RD1-C PSRU. (My Ba= d.) Tracy started 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-2B14DE51-987B-4269-9F0B-E4007D0BA431--