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From: SHIPCHIEF@aol.com
Message-ID: <cef.35df13e8.357d625e@aol.com>
Date: Sun, 8 Jun 2008 12:27:10 EDT
Subject: Re: [FlyRotary] Re: Muffler failed designs.
To: flyrotary@lancaironline.net
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I'm just starting my ground running phase, but I elected to use the turbo for 
a 'muffler'. I decided the weight would be offset by the power, somewhat.
I decided not to dump the down pipe out the left cowl cheek because the RV-8 
fresh air intake for the pilot is right aft of the turbo.
Carbon monoxide is a real problem in aircraft, so I decided it was best to 
avoid having any engine compartment air or exhaust on the left side of the 
cockpit.
My exhaust downpipe comes straight aft off the turbo, turns 90 degrees and 
aims down to the lower cowl exit where it's directed aft at the angle of the 
exit ramp.
If I discover a problem with heat, I'll ad a 15 degree turn down. If too much 
noise, I have a stainless Hush Power that I could add, hanging like a bomb 
under my seat.
Running the engine on the ground, the noise level did not seem offensive, but 
the highest RPM so far was 3500, or just about half take off power.
My YouTube video shows the engine running (search flyrotary) taken about 20 
feet away by my wife with a FUji F650 digital camera. I think it is acceptable.
Scott E


**************
Get trade secrets for amazing burgers. Watch "Cooking 
with Tyler Florence" on AOL Food.
      
(http://food.aol.com/tyler-florence?video=4?&amp;NCID=aolfod00030000000002)

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<HTML><FONT FACE=3Darial,helvetica><HTML><FONT  SIZE=3D2 PTSIZE=3D10 FAMILY=
=3D"SANSSERIF" FACE=3D"Arial" LANG=3D"0">I'm just starting my ground running=
 phase, but I elected to use the turbo for a 'muffler'. I decided the weight=
 would be offset by the power, somewhat.<BR>
I decided not to dump the down pipe out the left cowl cheek because the RV-8=
 fresh air intake for the pilot is right aft of the turbo.<BR>
Carbon monoxide is a real problem in aircraft, so I decided it was best to a=
void having any engine compartment air or exhaust on the left side of the co=
ckpit.<BR>
My exhaust downpipe comes straight aft off the turbo, turns 90 degrees and a=
ims down to the lower cowl exit where it's directed aft at the angle of the=20=
exit ramp.<BR>
If I discover a problem with heat, I'll ad a 15 degree turn down. If too muc=
h noise, I have a stainless Hush Power that I could add, hanging like a bomb=
 under my seat.<BR>
Running the engine on the ground, the noise level did not seem offensive, bu=
t the highest RPM so far was 3500, or just about half take off power.<BR>
My YouTube video shows the engine running (search flyrotary) taken about 20=20=
feet away by my wife with a FUji F650 digital camera. I think it is acceptab=
le.<BR>
Scott E</FONT><BR><BR><BR>**************<BR>Get trade secrets for amazing bu=
rgers. Watch "Cooking with Tyler Florence" on AOL Food.<BR>      (http://foo=
d.aol.com/tyler-florence?video=3D4?&amp;NCID=3Daolfod00030000000002)</HTML>

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