Mailing List flyrotary@lancaironline.net Message #29903
From: Russell Duffy <russell.duffy@gmail.com>
Subject: RE: [FlyRotary] Re: Muffler options
Date: Thu, 2 Feb 2006 18:57:58 -0600
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
I know you NA guys have all kinds of trouble with mufflers, but could the turbo actually help by smoothing out all the nasty pulses?
 
Hi John,
 
I'd guess that a turbo would be much easier on the muffler, since the pulses are dampened, and the temps are lower (lots of heat transferred from the turbo to the rest of your engine compartment <g>).  On the other hand, a turbo that's controllable, will have a big wastegate like the one in your pic (nice BTW).  That exhaust bypasses the turbo completely, though it still has to make a few turns to get out.  
 
FWIW, I talked to Burns Stainless about those mufflers, and decided that they weren't a good idea for an NA arrangement.  I think I was worried about the heat, and that they wouldn't really muffle that well.  Can't quite recall.  
 
Cheers,
Rusty 
 
 
PS- don't click on this link.  You've been warned :-)
 
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