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Actually, a real improvement. It tends to mute the
tinny sound and lowers the tone. Not quite a V-8 sound, but several
of my hangar neighbors made it clear they like the new sound much better - and
it is quieter. They used to say they could hear me coming before they
could see me. Now I can make it to the runway without anyone hearing me in
the pattern.
Since I had two headers and it was going to cost me around
$400 dollars to have a new one built with a single outlet, I just ordered two
$100 HushPower mufflers and saved $200. But, in any case, I used 2" dia
inlet and outlet primarily because that was the sized of my header pipes.
I think Tracy uses 2 1/4" on his 3 rotor and that with a single tube. They
don't make the mufflers with inlets any smaller than 2".
Here is the URL of the webstore where I ordered mine,
prices still appear reasonable.
Ed.
----- Original Message -----
Sent: Thursday, November 08, 2007 10:34
AM
Subject: [FlyRotary] Re: Spin Tech
Ed,
How do you like the sound quality of the
Hushpower? IE. loud but pleasant, quiet but tinny, or just right? How many
hours do you have on them now? What inlet/outlet size did you go with?
Inquireing minds want to know!
Bill Jepson
-----Original
Message-----
From: Ed Anderson <eanderson@carolina.rr.com>
To:
Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, 8
Nov 2007 5:09 am
Subject: [FlyRotary] Re: Spin Tech
You are correct, Bill.
Tracy liked the SS spintech sound characteristics, however
both its weight and terrible aerodynamic shape detracted from its use in
aircraft. The Hushpower II (which I am now using 2 of) does a
respectable job of sound suppression, is lighter, definitely better
aerodynamically and costs less. You can get it in both 409 and 304 SS
with the 304 being the more expensive.
Ed
----- Original Message -----
Sent: Thursday, November 08, 2007 12:35
AM
Subject: [FlyRotary] Re: Spin
Tech
Joe,
Tracy tested the spintech and it worked well. He then took it apart and
had it duplicated in SS. Or they built him one in SS. I don't remember.
Tracy said it worked well with no problems, other than the appearance. I
believe that Tracy and several others are trying the Hushpower II muffler.
It is available in SS out of the box and several people say it works well.
It has a better faired shape, (both ends rounded), and a slimmer profile
than the spintech. No long term results from anyone on the Hushpower
yet.
Bill Jepson
Joe,
I ran a Spintech for a while. It worked perfectly. I only
switched to a Flowmaster because of all the guff I took for not looking
"aerodynamic"!
Bill Eslick
RV-6 13B NA RD-1A EC-2 520 HRS
On Nov 7, 2007 8:06 PM, Joe Berki < jskmberki@alltel.net> wrote:
Does anybody know if Spin tech ever built a
muffler for the rotary? I know that Tracy tested one but did anything
come out of it? Thanks
Joe Berki
Limo EZ
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