| Thomas,
In my opinion, you want it as quiet in cruise as you can get it. Ground ops are normally at low power and therefore not very loud. It is when you go to WOT that things get deafening, and you'll spend a lot of time in that mode.
Mark
On Tue, Apr 19, 2011 at 6:59 PM, Thomas Mann <tmann@n200lz.com> wrote:
I'm putting a rotary in my canard aircraft. With all of these muffler failures I'm considering installing a cutout to bypass the muffler if needed.
Is it unrealistic to consider using the muffler during ground operations and while in the pattern and just bypass the muffler for all other operations? (Pusher Configuration)
-----Original Message----- From: Steve Thomas
Sent: Tuesday, April 19, 2011 6:24 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Burns Stainless Muffler Failure
I just did an inspection of my muffler and found that it was basically coming apart inside. This is a Burns Stainless, 17" 2-Stage muffler after 50 hours of flying behind a 2-rotor engine. Now, it could be that 50 hours is a reasonable life for something like this, I don't know. But, it certainly confirms the stories of muffler disintegration. I've inspected this muffler several times over the last 50 hours, but this is the first time that I've seen damage. But, when it comes apart, it really comes apart. It is unfortunate, as the muffler was really effective in reducing the noise and was light-weight.
Best Regards,
Steve Thomas
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