Okay I get and understand this. However on some other light planes I've
seen the 912-S with smaller or different looking mufflers. My question
is... Is there another type of smaller muffler that could be an option?
Or could straight pips be tuned in some way for the right amount of
back pressure for this engine? Has anyone heard of this being done for
the rotax?
Always curious.
Jeff R.
A258 - N128LJ / Gold Rush 176 hours and climbing slowly.
On Jan 24, 2009, at 8:23 AM, rampil wrote:
>
> Internal combustion engines are very sensitive to exhaust gas pressure.
> In operation, the cylinders put out large pulses of pressure and want
> to clear
> the contents of the exhausting cylinder as quickly and easily as
> possible.
> Quality exhaust systems and mufflers are designed to minimize the
> oscillations in back pressure which would interfere with emptying a
> cylinder.
> See: http://cafefoundation.org/v2/research_reports.php
> for some specific aircraft exhaust system information
>
> --------
> Ira N224XS
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=226524#226524
>
>
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