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From: "Mike Wills" <rv-4mike@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3415013@logan.com>
Subject: Re: [FlyRotary] Re: muffler design
Date: Wed, 7 Jan 2009 19:34:51 -0800
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Huh. Well it sure doesnt look as elegant as my  welded stainless 2 into 1 
header, but if it works it might be worth making the change. And would be 
cheap - I've got one floating around somewhere.

One question. Do you know if Paul ran housings with the splitters or 
without?

Mike Wills
----- Original Message ----- 
From: "Charlie England" <ceengland@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, January 07, 2009 10:09 AM
Subject: [FlyRotary] Re: muffler design


>I hope this attachment works.
>
> It's an email from the late Paul Conner with images of his 'muffler' on
> his SQ2000. If you factor in 'goodness' as part of the quiet equation,
> Paul had it all over anything else I've heard in over 10 years of
> watching (& hearing) rotary powered a/c except Dennis Haverlah, & he
> cheats by using a Renesis. While his plane wasn't silent, it wasn't any
> louder than a typical Lyc and it was much more pleasing to listen to
> than a 4cyl Lyc (& quite a bit more pleasant than the 2stroke-like bark
> of a typical rotary. It really sounded like a healthy automotive V-8.
>
> It's also pretty hard to beat for simplicity and even weight. Obviously
> cost a little HP, but real tuned headers + an equal performance muffler
> would weigh several times as much & just might drive the HP back to
> Paul's configuration. Run the HP vs weight gain vs money numbers....
>
> Charlie
>
> Christopher Barber wrote:
>> Yeah, what John Slade said.....I hope
>>
>> All the best,
>>
>> Chris
>> ----- Original Message ----- From: "John Slade" <sladerj@sbcglobal.net>
>> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
>> Sent: Tuesday, January 06, 2009 10:12 PM
>> Subject: [FlyRotary] Re: muffler design
>>
>>
>>> How about sending the exhaust into a circular chamber with a spinning
>>> wheel at the end to slow the exhaust down and absorb some of the
>>> energy? Of course the chamber would have to be very strong, and the
>>> wheel would have to have very good bearings and be made of something
>>> like inconel. Perhaps you could even harness some of the energy
>>> captured by the wheel to do useful work....
>>>
>>> Hey! Hold on a minute.... there's such a device on the market - A
>>> Turbonetics turbo. :)
>>>
>>> John (quieter than a C172) Slade
>


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