X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost03.isp.att.net ([204.127.217.103] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6651717 for flyrotary@lancaironline.net; Tue, 24 Dec 2013 09:32:05 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.217.103; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-142-133.mco.bellsouth.net[98.85.142.133]) by isp.att.net (frfwmhc03) with SMTP id <20131224143129H0300pnds5e>; Tue, 24 Dec 2013 14:31:29 +0000 X-Originating-IP: [98.85.142.133] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Renesis with 76 X 88 prop Date: Tue, 24 Dec 2013 09:31:28 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0039_01CF008A.ECDB5E00" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac8AZtsfCIkHmiEXRIChyOW4yl8BUAAS1LWA X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0039_01CF008A.ECDB5E00 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Neil, I was told a lot of things about the Renesis that have not been my experience with it. When I first started mine up, I had a 3 inch straight pipe on it. Don't tell me something is louder! Not only loud but angry! Scary sound! The Renesis is supposed to have a couple hundred degrees lower EGT due to the side exhaust outlets. I have only been able to get mine into the 1600s a couple of times. They run in the 17s and 18s. I am using the stock Renesis exhaust manifold and the probes are in the main body just in front of the inlet from the engine, maybe 2 inches from the engine. I think this affects the temp you get. Farther away would be much lower. I couldn't see your probes in the picture. Speaking of which, what are the resistors for? The P port intake manifold looks store bought, where did you get it? Is that the Cozy Girrls front PSRU plate and mount? Where and what kind of throttle body? Bill _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Neil Unger Sent: Tuesday, December 24, 2013 12:12 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Renesis with 76 X 88 prop Bill, Only the inlet is P ported, the exhaust is stock for I was told that a stock renesis is quieter than the 13B. The side inlets were filled with some very expensive epoxy. My probes are sited approx 2 to 3 inches from the face of the exhaust port. My rotary racing bloke suggests that 1700 should be the upper limit although Tracy suggests that mid 1800 is survivable. I believe that 25 BTDC is standard, so will try up to 30 and see what improvement is evident I can get a substantial drop in EGT with a very rich mix. So still reinventing the wheel. Neil. From: Bill Bradburry Sent: Tuesday, December 24, 2013 2:16 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Renesis with 76 X 88 prop 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. I have a stock Renesis 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@lancaironline.net] On Behalf 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 Dennis, 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 be 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 engine onto a dyno to clarify the timing and EGT's. Should be very interesting to say the least. No one works here until the first half of Jan has passed in this banana republic of OZ. 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 I've had server issues this week and could not send this until today. Bill I actually have the RD1-C PSRU. (My Bad.) Tracy started selling these about 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 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 EGTs go above 1800. Dennis H. ------=_NextPart_000_0039_01CF008A.ECDB5E00 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Neil,

I was told a lot of things about = the Renesis that have not been my experience with it. When I first started mine up, = I had a 3 inch straight pipe on it. Don’t tell me something is = louder!  Not only loud but angry!  Scary sound!  The Renesis is supposed to have = a couple hundred degrees lower EGT due to the side exhaust outlets.  = I have only been able to get mine into the 1600s a couple of times.  They = run in the 17s and 18s.  I am using the stock Renesis exhaust manifold and = the probes are in the main body just in front of the inlet from the engine, = maybe 2 inches from the engine.  I think this affects the temp you get. = Farther away would be much lower.  I couldn’t see your probes in the = picture.

 

Speaking of which, what are the = resistors for?  The P port intake manifold looks store bought, where did you = get it?  Is that the Cozy Girrls front PSRU plate and mount?  Where and what = kind of throttle body?

 

Bill

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Neil Unger
Sent: Tuesday, December = 24, 2013 12:12 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Renesis with 76 X 88 prop

 

Bill,

  &n= bsp;      Only the inlet is P ported, the exhaust is stock for I was told that a = stock renesis is quieter than the 13B.  The side inlets were filled with = some very expensive epoxy.  My probes are sited approx 2 to 3 inches = from the face of the exhaust port.  My rotary racing bloke suggests that = 1700 should be the upper limit although Tracy suggests that mid 1800 is survivable.  I believe that 25 BTDC is = standard, so will try up to 30 and see what improvement is evident I can get a substantial drop in EGT with a very rich mix.  So still reinventing = the wheel.  Neil.

 

Sent: Tuesday, = December 24, 2013 2:16 PM

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

 

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.  I have a stock Renesis 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@lancaironline.net] On Behalf 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

 

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 = be 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 engine = onto a dyno to clarify the timing and EGT’s.  Should be very = interesting 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

 

=

I actually have the RD1-C PSRU. = (My Bad.) Tracy started selling these about 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 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 EGTs go above 1800.

 

=

Dennis = H.

 

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