X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nschwmtas06p.mx.bigpond.com ([61.9.189.152] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6651217 for flyrotary@lancaironline.net; Tue, 24 Dec 2013 00:20:50 -0500 Received-SPF: pass receiver=logan.com; client-ip=61.9.189.152; envelope-from=neil.unger@bigpond.com Received: from nschwcmgw09p ([61.9.190.169]) by nschwmtas06p.mx.bigpond.com with ESMTP id <20131224052015.APN2038.nschwmtas06p.mx.bigpond.com@nschwcmgw09p> for ; Tue, 24 Dec 2013 05:20:15 +0000 Received: from UserPC ([124.179.94.98]) by nschwcmgw09p with BigPond Outbound id 5HLB1n00927Ld5001HLB3P; Tue, 24 Dec 2013 05:20:15 +0000 X-Authority-Analysis: v=2.0 cv=Zbefx7pA c=1 sm=1 a=M0BNStCANS0jTh8LoA9i4Q==:17 a=SuIXh5w55-kA:10 a=JDadKst33uMA:10 a=1IlZJK9HAAAA:8 a=hNJ57BQL41cA:10 a=oevi6tH4UfNWI7s0yvoA:9 a=QEXdDO2ut3YA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=4PR2P7QzAAAA:8 a=ayC55rCoAAAA:8 a=buW-51803yXn1TFfcooA:9 a=_W_S_7VecoQA:10 a=frz4AuCg-hUA:10 a=MSl-tDqOz04A:10 a=EzXvWhQp4_cA:10 a=djSSOgbfo6cA:10 a=M0BNStCANS0jTh8LoA9i4Q==:117 Message-ID: <18AB58DA15FA4A0C8998CECF7BA9D58C@UserPC> From: "Neil Unger" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Renesis with 76 X 88 prop Date: Tue, 24 Dec 2013 16:20:06 +1100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0012_01CF00C4.01E68BB0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 This is a multi-part message in MIME format. ------=_NextPart_000_0012_01CF00C4.01E68BB0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Charlie, Take off seems to be best at 12. Have not tried leaning = at full power. Still early days, but pulling power back is the only way = so far to lower the EGT. Cooked the first EGT probe, second is not = well, so have ordered a third set. At $60 each I am not really learning = much except that freight from the states is very dear. If this keeps up = may try and go stock ,Mazda to see it they survive better. Waiting for = a replacement chip from Tracy to fix computer A, so cannot fly until = that arrives Neil. From: Charlie England=20 Sent: Tuesday, December 24, 2013 12:10 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Renesis with 76 X 88 prop How rich are you running? If it's really rich, you may have fuel burning = in the exhaust even if timing is correct. Can you lean at near full = power & get a drop in egt without a significant loss of power? Also, even conventional a/c engines see egt's all over the map from = engine to engine, due to timing, mixture, and even position of the = probes (distance from port, exposure to exhaust stream, etc) and = variation in the probes themselves. Of course, with the P-port engine, you might just be making more power. = :-) Charlie On 12/23/2013 5:39 PM, Neil Unger wrote: 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=E2=80=99s. 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=20 Sent: Tuesday, December 24, 2013 8:07 AM To: Rotary motors in aircraft=20 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.=20 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_0012_01CF00C4.01E68BB0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Charlie,
           &n= bsp;  =20 Take off seems to be best at 12.  Have not tried leaning at full=20 power.  Still early days, but pulling power back is the only way so = far to=20 lower the EGT.  Cooked the first EGT probe, second is not well, so = have=20 ordered a third set. At $60 each I am not really learning much except = that=20 freight from the states is very dear.  If this keeps up may try and = go=20 stock ,Mazda to see it they survive better.  Waiting for a = replacement chip=20 from Tracy to fix computer A, so cannot fly until that arrives = Neil.
 
Sent: Tuesday, December 24, 2013 12:10 PM
Subject: [FlyRotary] Re: Renesis with 76 X 88 = prop
 
How rich are you running? If it's really = rich, you=20 may have fuel burning in the exhaust even if timing is correct. Can you = lean at=20 near full power & get a drop in egt without a significant loss of=20 power?

Also, even conventional a/c engines see egt's all over the = map=20 from engine to engine, due to timing, mixture, and even position of the = probes=20 (distance from port, exposure to exhaust stream, etc) and variation in = the=20 probes themselves.

Of course, with the P-port engine, you might = just be=20 making more power. :-)

Charlie

On 12/23/2013 5:39 PM, Neil = Unger=20 wrote:
Dennis,
=
           &n= bsp; =20 I have a P ported renesis and am seeing EGT up to 1850.  Having = talked=20 with various people with far more knowledge than myself, who suggest = it may be=20 that the spark should be advanced up to around 30 BTDC. to reduce the = EGT.=20 Rather than destroy the motor finding out, I am looking at getting the = engine=20 onto a dyno to clarify the timing and EGT=E2=80=99s.  Should be = very interesting=20 to say the least.  No one works here until the first half of Jan = has=20 passed in this banana republic of OZ.
 
Sent: Tuesday, December 24, 2013 8:07 AM
Subject: [FlyRotary] Re: Renesis with 76 X 88=20 prop
 
 
 
I've had server issues this week and could not send this until=20 today.
 
Bill
 
I actually have the RD1-C PSRU. (My = Bad.) Tracy=20 started selling these about 6-7 years ago for use with the Renesis.=20
The prop turns clockwise from the = pilot's seat=20 view.
I normally see EGT's in the high 1750 = F. during=20 full power takeoff and early climb. It will go above 1800 F. if the = mixture is=20 real close to best power. I have my EM-2 set to warn me if the EGTs go = above=20 1800.
 
Dennis = H.
 

------=_NextPart_000_0012_01CF00C4.01E68BB0--