Brian,

Bill Eslick had a power loss that I = think he feels was due to a Hushpower guts blocking the exhaust. He had = an emergency landing as a result. I had a Hushpower on my plane, but = just changed it out to a DNA muffler. My Hushpower seems to be still in = ok shape structurally, but it is full of something loose that rattles when = you shake it. It only has 30-40 hours on it. Only 23 flight = hours.

Bill

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of bktrub@aol.com
Sent: Wednesday, May 16, = 2012 12:26 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = High EGTs

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?

Brian Trubee

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

Mark,

Now you have gotten me = concerned! I changed the muffler and that didn’t seem to have any effect on the = EGTs, so I don’t think that is the cause, but I don’t want to = damage any orings. What were the temps you were seeing when the orings were = damaged?

Bill

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

Brian,

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?

Mark S.

On Tue, May 15, 2012 at 8:51 PM, = <bktrub@aol.com> 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?

Brian Trubee