X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.233.178.246] (HELO hs-out-2122.google.com) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2642744 for flyrotary@lancaironline.net; Sat, 12 Jan 2008 21:06:56 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.178.246; envelope-from=msteitle@gmail.com Received: by hs-out-2122.google.com with SMTP id k27so1658015hsc.3 for ; Sat, 12 Jan 2008 18:06:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=09kjlwBBuuYrj0LA2qxrVm2ms8WWETIGT1QG6ZacKmI=; b=p+iIqzOxTi330AOkNb/4Ie7aXr8PtMgbX0JgwyGAeXt6KAeOBWNh5+RKxkPOvhF1it/EIlu4by22kNcwoB0cG4dYdKfZnnd5qCaEccsgbueSsV1Nc3bboKiWh5RZDWUrfLIBU2EQQU6sYoc1mFvNjIehDmdflFiIOhdy2E/SOV4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=xwE853JNtV6UZxlX+4CNVBxL9TMCn73Tg2SxZWuXfF3sbvkNoV0MgBg/pzNOk1XKCtGkuB6zqcTZwGE+cg7hGQAbOkNOP7fCQrpR7GqWzVtE78JjPblSsn6fitdiYErliGvjWv80Tm4zHf2E9BKGjW6tRtJiwB50RWDsB5AbO3k= Received: by 10.150.140.6 with SMTP id n6mr1904754ybd.33.1200189978083; Sat, 12 Jan 2008 18:06:18 -0800 (PST) Received: by 10.150.178.14 with HTTP; Sat, 12 Jan 2008 18:06:18 -0800 (PST) Message-ID: <5cf132c0801121806m66eb3b16nc4eb02c58ce31020@mail.gmail.com> Date: Sat, 12 Jan 2008 20:06:18 -0600 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: URL for HushPower In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_2146_2797931.1200189978070" References: ------=_Part_2146_2797931.1200189978070 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Bill, The cowl has had the "Dolly Pardon" mod. So, no further cowl modifications should be necessary. Hopefully, this exhaust system will last. I found on= e crack that I hope was caused by not having a support out near the rear. Th= e HP-2 will be supported for sure. I haven't installed the bung for the O2 sensor yet, plan to do that tomorrow. I need to pick up a new O2 sensor as mine somehow got damaged. Mark S. On Jan 12, 2008 7:02 PM, Bill Bradburry wrote: > Took me a minute to figure out what I was looking at, Mark, but what ar= e > you going to do to reinstall the O2 sensor? Looks like you will have to = do > a little cowl mod as well? > > > > I sure wish I lived a little closer to your welder=85 :>) That is a ver= y > clean looking install. > > > > Bill B > > > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Mark Steitle > *Sent:* Saturday, January 12, 2008 5:59 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: URL for HushPower > > For rotorheads that are contemplating using (also the mildly curious) the > Flowmaster HP-2 "resonator" muffler, > > I installed the HP-2 today on my 20B and was able to do a run-up. Bobby > Hughes and I both agree that the exhaust tone is much, much mellower with= a > deeper tone. My Lighspeed ANR headset had no problem cancelling out this > low-frequency exhaust tone. While the overall sound level was still pret= ty > significant, the exhaust tone was much more pleasant to the ears. The > ear-piercing, glass shattering, nails-on-the-chalkboard, > make-you-bleed-from-the-ears, exhaust tone is totally tamed. The 3-blade > M/T prop is the primary noisemaker now. The test took place between two > rows of hangars, so I feel that DB readings are not very realistic. I'll > take those again out on the ramp and post the numbers. If the HP-2 holds= up > to the pounding of the rotary's exhaust, I'll be a very happy camper. > > Mark S. > > > On Jan 12, 2008 3:22 PM, Ed Anderson wrote: > > They are both used stock Rx-7 turbos. one is the older model pre 89 and > the second is a later model 91 year. They both appear to be in working > condition in no nicks on the blades and they spin. I used compressed air= to > spin the compressor wheels to they were really whizzing along. > > > > One came with my 91 turbo block and the other was given to me. > > > > Ed > > > > > > ----- Original Message ----- > > *From:* Thomas Jakits > > *To:* Rotary motors in aircraft > > *Sent:* Saturday, January 12, 2008 3:46 PM > > *Subject:* [FlyRotary] Re: URL for HushPower > > > > Well, > > then we just have to keep on looking for a "justification" for you/your > area/etc. :) > > Just wait, I'll find something! :) > > Thomas > > How about: "..... I have two turbo sitting in my shop......." > > ...are they new/used? What's the scoop on them? > > > ------=_Part_2146_2797931.1200189978070 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Bill,
The cowl has had the "Dolly Pardon" mod.  So, no f= urther cowl modifications should be necessary.  Hopefully, this exhaus= t system will last.  I found one crack that I hope was caused by not h= aving a support out near the rear.  The HP-2 will be supported for sur= e.  I haven't installed the bung for the O2 sensor yet, plan to do= that tomorrow.  I need to pick up a new O2 sensor as mine somehow got= damaged. =20

Mark S.

On Jan 12, 2008 7:02 PM, = Bill Bradburry <bbradburry@b= ellsouth.net> wrote:

Took me a minute to figure out what I was looking at, Mark, but what are you going to do to reinstall the O2 sensor?  Looks like you will h= ave to do a little cowl mod as well?

 

I sure wish I lived a little closer to your welder=85  :>)  That is a very clean looking install.

 

Bill B 

 

From: Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Saturday, January 12= , 2008 5:59 PM


To: Rotary motors in aircraft
Subject: [FlyRotary] Re: U= RL for HushPower

For rotorheads that are contemplating using (also the mildly curious) the Flowmaster HP-2 "resonator" muffler,

I installed the HP-2 today on my 20B and was able to do a run-up.  Bob= by Hughes and I both agree that the exhaust tone is much, much mellower with a deeper tone.  My Lighspeed ANR headset had no problem cancelling out t= his low-frequency exhaust tone.  While the overall sound level was still pretty significant, the exhaust tone was much more pleasant to the ears.&nb= sp; The ear-piercing, glass shattering, nails-on-the-chalkboard, make-you-bleed-from-the-ears, exhaust tone is totally tamed.  The 3-bl= ade M/T prop is the primary noisemaker now.  The test took place between t= wo rows of hangars, so I feel that DB readings are not very realistic.  I= 'll take those again out on the ramp and post the numbers.  If the HP-2 ho= lds up to the pounding of the rotary's exhaust, I'll be a very happy ca= mper.

Mark S.


On Jan 12, 2008 3:22 PM, Ed Anderson <eanderson@carolina.rr.com> wrote:

They are both used stock Rx-7 turbos.  one is the older model pre 89  and the second is a later model 91 year.  They both appear to be in working condition in no nicks on the blades and they spin.  I used compressed air to spin the compressor wheels to they wer= e really whizzing along.

 

One came with my 91 turbo block and the other was given to me.

 

Ed<= font color=3D"#888888">

 

 

----- Original Message -----

= From: Thomas Jakits=

Sent: Saturd= ay, January 12, 2008 3:46 PM

Subject: [Fl= yRotary] Re: URL for HushPower

 

Well,

then we just have to keep on looking for a "justification" for you/your area/etc. :)

Just wait, I'll find something! :)

Thomas

How about: "..... I have two turbo sitting in my shop......."  <= br>
...are they new/used? What's the scoop on them?

 


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