X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.233.178.242] (HELO hs-out-2122.google.com) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2643126 for flyrotary@lancaironline.net; Sun, 13 Jan 2008 07:21:14 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.178.242; envelope-from=msteitle@gmail.com Received: by hs-out-2122.google.com with SMTP id k27so1735403hsc.3 for ; Sun, 13 Jan 2008 04:20:35 -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=hzFiomce6KZddpxFNViUiob1OZrBXm6/ZbL8gCObha8=; b=ADnacMWWCjfEJLc9EvCHrJlhXL5A7ojF991UxbUJWnIU5FP4dqmDWPr5MG4J4H9u7Zs4LPOxusjl3aOZEcZFZJNxxUAstOWhXTYCjQqHjSrwZfKWmAPRCteW062kCXPTrvPQVMYg47z/wwIMV+yluOjscX9j3P/QFYThEc3oQK4= 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=TrYF/hwILbyN9f+5ec72uml5gPv0w1ewGEkXWTdoaQOuR/zKWABOBnfdYt5nW7QWCx5KIuxQyHbQ2IeZiNlZtGX2crcqSkNpH0ZUlJN8tAXvhnxlwdhLMnnHZ7oKs5vyFqiXzD64ekpVRcNR2Esav/fQ3Dh3mCBIjmGoNTnzcwg= Received: by 10.150.134.7 with SMTP id h7mr1938625ybd.34.1200226834965; Sun, 13 Jan 2008 04:20:34 -0800 (PST) Received: by 10.150.178.14 with HTTP; Sun, 13 Jan 2008 04:20:34 -0800 (PST) Message-ID: <5cf132c0801130420j2ac95672k70a2c9218c883e49@mail.gmail.com> Date: Sun, 13 Jan 2008 06:20:34 -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_2422_8833468.1200226834982" References: ------=_Part_2422_8833468.1200226834982 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Bill, My O2 sensor was difficult to remove, but the threads were ok. It did finally come out after a squirt of WD-40. The threads looked fine, but the sensor part was in bad shape. I may have damaged it myself previously when removing the baffle. BTW, the auger muffler (loose copy of the Spiral Flow= ) was holding up pretty well. There were two small places where the "auger" was fatigued, but all-in-all, it looks like it could be a viable alternative. Anyone thinking of trying this design should be advised to use nothing but 321SS or inconel. Mark On Jan 12, 2008 9:35 PM, Bill Bradburry wrote: > Mark, > > > > How do the threads look on the O2 sensor? Mine were boogered up when I > removed it. I still don't know if it is due to different threads or > something else. I used the bung from the original exhaust manifold, but = the > O2 sensor that Tracy recommends. > > > > Bill B > > > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Mark Steitle > *Sent:* Saturday, January 12, 2008 9:06 PM > > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: URL for HushPower > > 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 one crack that I hope was caused by not having a support o= ut > near the rear. The 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 are > 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_2422_8833468.1200226834982 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Bill,
My O2 sensor was difficult to remove, but the threads were ok.&nb= sp; It did finally come out after a squirt of WD-40.  The threads look= ed fine, but the sensor part was in bad shape.  I may have damaged it = myself previously when removing the baffle.  BTW, the auger muffler (l= oose copy of the Spiral Flow) was holding up pretty well.  There were = two small places where the "auger" was fatigued, but all-in-all, = it looks like it could be a viable alternative.   Anyone thinking= of trying this design should be advised to use nothing but 321SS or incone= l.  =20

Mark

On Jan 12, 2008 9:35 PM, Bil= l Bradburry <bbradburry@bell= south.net> wrote:

Mark,

 

How do the threads look on the O2 sensor?  Mine were boogered up when I removed it.  I still don't know if it is due to different threads or something else.  I used the bung from the original exhaust manifold, but the O2 sensor that Tracy recommends.

 

Bill B 

 

From: Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Saturday, January 12= , 2008 9:06 PM


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

Bill,
The cowl has had the "Dolly Pardon" mod.  So, no further cow= l modifications should be necessary.  Hopefully, this exhaust system wil= l last.  I found one crack that I hope was caused by not having a suppor= t out near the rear.  The 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 <bbradburry@bellsouth.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 have to do a little c= owl 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:flyrotary@lancaironline.net] On Behalf Of Mark Steitle<= br> Sent: Saturday, January 12= , 2008 5:59 PM


To: Rotary motors in aircraft

Subject:For rotorheads that are contemplating usi= ng (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 workin= g condition in no nicks on the blades and they spin.  I used compressed air to spi= n the compressor wheels to they were really whizzing along.

 

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

 

Ed<= /p>

 

 

----- 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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