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Subject: Re: [FlyRotary] Re: muffler for Renesis?
References: <list-6692707@logan.com>
From: Mark Steitle <msteitle@gmail.com>
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Date: Sat, 18 Jan 2014 17:57:31 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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The main body of the non resonator muffler that I have is only 12.5" long, 1=
9.5" including the inlet and outlet.  But those could be cut off.  This is s=
hort enough to fit inside many cowls.  That's what I'm planning on doing.

Mark

Sent from my iPad

> On Jan 18, 2014, at 10:56 AM, Charlie England <ceengland7@gmail.com> wrote=
:
>=20
> Thanks, Mark. I discovered that after I sent the previous message. Their w=
eb site seems to have a somewhat random 'organization'.
>=20
> Is the non-res model only 20" overall, as they describe? That would make i=
t only slightly longer than the H.P. resonator that Dennis is using, & since=
 it appears to be only a perforated tube in the main cylinder, it should sur=
vive much better than anything with actual baffles and/or packing.
>=20
> Charlie
>=20
>> On 1/18/2014 9:38 AM, Mark Steitle wrote:
>> Charlie,
>> They stock two types, one with packing, one without.  The one with packin=
g is their "resonator"model, and it is longer than the non-res model.  I bou=
ght the non-res model as I figured the packing was only temporary.  I have n=
ot installed it yet, so no flight report.
>>=20
>> Mark
>>=20
>> Sent from my iPad
>>=20
>>> On Jan 18, 2014, at 8:54 AM, Charlie England <ceengland7@gmail.com> wrot=
e:
>>>=20
>>> Thanks, Tracy; it's good news that it is both quiet and survives. Didn't=
 realize that the aeroturbine had packing in it. If it performs as well as, o=
r better than the hushpower, I may give it a shot. It's actually a bit cheap=
er than the h.p. resonator.
>>>=20
>>> Charlie
>>>=20
>>>> On 1/17/2014 10:53 AM, Tracy wrote:
>>>> The aero turbine sounded better than the Hushpower II  but both change i=
n tone over time, probably due to packing deteriorating.   Still, the AT was=
 the best after they stabilized.
>>>>=20
>>>> Tracy
>>>>=20
>>>> Sent from my iPad
>>>>=20
>>>>> On Jan 17, 2014, at 11:06, Charlie England <ceengland7@gmail.com> wrot=
e:
>>>>>=20
>>>>> Time to order a muffler. My goal is to keep it inside the cowl (RV-7).=
 I know, I know, but it looks better, and more important, it *sounds* better=
.
>>>>>=20
>>>>> I believe that Dennis H. used this:
>>>>> http://www.summitracing.com/parts/hsh-12412400/overview/
>>>>> I know it sounds great. Dennis, do you remember the weight of just the=
 resonator?
>>>>>=20
>>>>> I know that Tracy is running an Aeroturbine (weight: 6 lbs on the 20B i=
n the RV-8, & has talked about how good it sounds:
>>>>> http://www.aeroexhaust.com/mufflers/aero-exhaust-at2525.html
>>>>>=20
>>>>> They are roughly the same size and price, so I'm wondering how the Aer=
oturbine will compare in performance (meaning: killing the harsh harmonics o=
f the rotary).
>>>>>=20
>>>>> Tracy, you might be the only person who's heard both on a rotary. Base=
d on your 20B experience, is it likely to work better than the Hushpower Res=
onator on a Renesis? I'll be using a manifold/transition pipe similar to Den=
nis' setup to keep everything inside the cowl.
>>>>>=20
>>>>> Thanks,
>>>>>=20
>>>>> Charlie
>>>>>=20
>>>>>=20
>>>>>=20
>>>>> --
>>>>> Homepage:  http://www.flyrotary.com/
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List.html
>>>> --
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ist.html
>>>=20
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st.html
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t.html
>=20
>=20
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