X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-spurfowl.atl.sa.earthlink.net ([209.86.89.66] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5544984 for flyrotary@lancaironline.net; Wed, 16 May 2012 08:36:34 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.66; envelope-from=n360tg@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=CjWNqDS1+EEKWLaMu6fdM7lzMEJY0O0goozrLn1bz6hZKJI+Nzf0nLUhistG+UlJ; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [184.0.224.156] (helo=[192.168.1.69]) by elasmtp-spurfowl.atl.sa.earthlink.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.67) (envelope-from ) id 1SUdSP-00013B-Lx for flyrotary@lancaironline.net; Wed, 16 May 2012 08:35:57 -0400 From: Thomas Giddings Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-113-234791596 Subject: Re: [FlyRotary] Re: High EGTs Date: Wed, 16 May 2012 08:36:00 -0400 In-Reply-To: To: "Rotary motors in aircraft" References: Message-Id: X-Mailer: Apple Mail (2.1084) X-ELNK-Trace: 77b0437ff618fec294f5150ab1c16ac07c540ca440b21de7d3161d46abeeebe278ce810dfccc1a19350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 184.0.224.156 --Apple-Mail-113-234791596 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Soooo...what are those numbers?:) KIND REGARDS Thomas Giddings n360tg@earthlink.net 727 858 1772 On May 16, 2012, at 8:28 AM, Tracy wrote: > I'm still mystified by the widely different results builders are = getting with the Hushpower. Both my planes have them. I have over 500 = hours on the RV-4 muffler and it's still in good shape (minus the = fiberglass which goes pretty fast). Even the Hushpower on the 20B is = still OK after 90 hours. Admittedly, i do spend a lot of time cruising = around at low throttle but every takeoff & climb out is at WOT.=20 >=20 > Only news on the 20B testing is that I found my fuel flow calibration = was off so it wasn't getting as good a fuel burn numbers as I thought. = Still in the same ball park as the Renesis at similar airspeeds. At sea = level it gets pretty hungry above 215 mph though. There the numbers = look like what you would expect of a Lyc. IO - 540. =20 >=20 > Tracy >=20 > Sent from my iPad >=20 > On May 16, 2012, at 8:03 AM, "Ed Anderson" = wrote: >=20 >> Hi Brian, >> =20 >> I have flown with two Hushpower mufflers for the past 8 years. So = far no restrictions, although the non-metallic sound deadener has long = departed. Also by having one muffler per exhaust, it may suffer less of = a beating. >> =20 >> YMMV >> =20 >> Ed >> =20 >> Edward L. Anderson >> Anderson Electronic Enterprises LLC >> 305 Reefton Road >> Weddington, NC 28104 >> http://www.andersonee.com >> http://www.eicommander.com >>=20 >> From: bktrub@aol.com >> Sent: Wednesday, May 16, 2012 12:25 AM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Re: High EGTs >>=20 >> And I am running a Hushpower, I run a bore scope up it today and the = exit cone looked completely intact. No way to check out the entrance = cone without taking the exhuast system apart, which is possible but a = PITA. Is a Hushpower considered restrictive? >> =20 >> Brian Trubee >>=20 >>=20 >> -----Original Message----- >> From: Bill Bradburry >> To: Rotary motors in aircraft >> Sent: Tue, May 15, 2012 8:38 pm >> Subject: [FlyRotary] Re: High EGTs >>=20 >> Mark, >> Now you have gotten me concerned! I changed the muffler and that = didn=92t seem to have any effect on the EGTs, so I don=92t think that is = the cause, but I don=92t want to damage any orings. What were the temps = you were seeing when the orings were damaged? >> =20 >> Bill >> =20 >> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Mark Steitle >> Sent: Tuesday, May 15, 2012 10:18 PM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Re: High EGTs >> =20 >> Brian,=20 >> =20 >> I had high EGT's at one time. Turns out it was due to an overly = restrictive muffler. The high EGT's damaged the o-rings resulting in an = engine overhaul. Could this possibly be at the root of your high EGT = readings? >> =20 >> Mark S. >> On Tue, May 15, 2012 at 8:51 PM, wrote: >> My engine is now running just the way it should, temps were 180 or = lower on a 75 degree day, but my EGTs have always been high, really = high- above 1800 almost all the time. I think it may be a calibration = issue. My egt sensors are about 3 inches downstream of the exhaust = ports, and I am using Tracy's EM2, calibrated at the stock settings. = When the engine is stone cold, the egt's read about 230 degrees, which I = assume is normal because the sensors are meant to operate at a much = higher temperature. Any thoughts? >> =20 >> Brian Trubee >> =20 --Apple-Mail-113-234791596 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252
KIND = REGARDS
Thomas Giddings
72= 7 858 1772



On May 16, 2012, at 8:28 AM, Tracy wrote:

I'm still mystified by the widely different = results builders are getting with the Hushpower.  Both my planes = have them.  I have over 500 hours on the RV-4 muffler and it's = still in good shape (minus the fiberglass which goes pretty fast). Even = the Hushpower on the 20B is still OK after 90 hours.   Admittedly, = i do spend a lot of time cruising around at low throttle but every = takeoff & climb out is at WOT. 

Only = news on the 20B testing is that I found my fuel flow calibration was off = so it wasn't getting as good a fuel burn numbers as I thought. =  Still in the same ball park as the Renesis at similar airspeeds. =  At sea level it gets pretty hungry above 215 mph though. =  There the numbers look like what you would expect of a Lyc. IO - = 540.  

Tracy

Sent from my = iPad

On May 16, 2012, at 8:03 AM, "Ed Anderson" <eanderson@carolina.rr.com>= ; wrote:

Hi Brian,
 
I have flown with two Hushpower mufflers for = the past 8=20 years.  So far no restrictions, although the non-metallic sound = deadener=20 has long departed.  Also by having one muffler per exhaust, it may = suffer=20 less of a beating.
 
YMMV
 
Ed
 
Edward L. Anderson
Anderson Electronic = Enterprises=20 LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com

Sent: Wednesday, May 16, 2012 12:25 AM
Subject: [FlyRotary] Re: High EGTs

And I am running a Hushpower, I run a bore scope up it today and = the exit=20 cone looked completely intact. No way to check out the entrance cone = without=20 taking the exhuast  system apart, which is possible but a PITA. Is = a=20 Hushpower considered restrictive?
 
Brian Trubee


-----Original=20 Message-----
From: Bill Bradburry <bbradburry@bellsouth.net><= br>To:=20 Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tue, May=20 15, 2012 8:38 pm
Subject: [FlyRotary] Re: High EGTs

Mark,
Now you have gotten me=20 concerned!  I changed the muffler and that didn=92t seem to have = any effect=20 on the EGTs, so I don=92t think that is the cause, but I don=92t want to = damage any=20 orings.  What were the temps you were seeing when the orings were=20= damaged?
 
Bill
 
From: Rotary=20 motors in aircraft [mailto:flyrotary@lancaironline= .net]=20 On Behalf Of Mark=20 Steitle
Sent: = Tuesday, May 15,=20 2012 10:18 PM
To: = Rotary motors=20 in aircraft
Subject:=20= [FlyRotary] Re: High EGTs
 
Brian, 
 
I had high EGT's at one time.  Turns out = it was due=20 to an overly restrictive muffler.  The high EGT's damaged the = o-rings=20 resulting in an engine overhaul.  Could this possibly be at the = root of=20 your high EGT readings?
 
Mark = S.
On Tue, May 15, 2012 at 8:51 PM, <bktrub@aol.com> = wrote:
My engine is now=20 running just the way it should, temps were 180 or lower on a 75 degree = day, but=20 my EGTs have always been high, really high- above 1800 almost all the = time. I=20 think it may be a calibration issue. My egt sensors are about 3 inches=20= downstream of the exhaust ports, and I am using Tracy's EM2, calibrated = at the=20 stock settings. When the engine is stone cold, the egt's read about 230 = degrees,=20 which I assume is normal because the sensors are meant to operate at a = much=20 higher temperature. Any thoughts?
 
Brian=20 Trubee
 

= --Apple-Mail-113-234791596--