X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2638442 for flyrotary@lancaironline.net; Wed, 09 Jan 2008 19:42:58 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([24.74.103.61]) by cdptpa-omta02.mail.rr.com with SMTP id <20080110004219.BWHF14132.cdptpa-omta02.mail.rr.com@edward2> for ; Thu, 10 Jan 2008 00:42:19 +0000 Message-ID: <000d01c85321$b7c4bfd0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: URL for HushPower Date: Wed, 9 Jan 2008 19:42:45 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01C852F7.CEAE5370" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 This is a multi-part message in MIME format. ------=_NextPart_000_000A_01C852F7.CEAE5370 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hey, George Talk is cheap {:>), I want to know when we get to the meaty part about = how well it works? I've done my experimenting with exhausts - every time I got one part of = the problem fixed - like sound loudness, I experienced a failure/draw = back someplace else - of course, could just be my ineptitude. I really = thought I had it when I put the 1/8" thick discs in the tubes - it did = really knock the sound down, but the exhaust pulses broke the welds = loose and the discs spun fast enough to give the exhaust a turbine sound = of its ownl {:>).=20 Looking forward to seeing the results, George Ed. ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Wednesday, January 09, 2008 6:58 PM Subject: [FlyRotary] Re: URL for HushPower Ed, I believe if Dave Leonard can now 'see the light' through the = muffler - it may be an indicator that the sound waves have broken = through the joining cones. In any event it will only get louder at the = passage gets bigger. I figured this would be the weakest link in the HushPower design as = it concentrates all the energy into the smallest area, holes in the = cones also weaken the area - not so with our design. George ( down under) Ed, Reflective cone theory is what Bill Jepson and I have designed into = our joint venture exhaust design - although I haven't finished it so I = don't know how well it works. The principle is to maintain a clear passage for the exhaust flow = but redirect the sound waves (which are energy) therefore turning the = sound into heat. In our design the heat is dissipated with cool air flow = through the exhaust and further cool air around the exhaust. However this is not a cheap exhaust to make, as mine is assembled = out of a number of cones ( 1.6mm SS). I think the cost of the cones came = to $200 and then there's the welding. There is also the fact that it is = also not light because of the thickness of the material. The bottom line is that cones by their nature redirect sound energy = into heat. The idea is to not have a direct exit for the sound energy - = this has been achieved in this design by having the sound waves inter = the center of a cone which is blocked-off and is redirected through the = holes and redirected out.=20 So the theory in this design ( HushPower) is sound - excuse the pun. = The packing material merely protects the light outer skin. There will be = a tremendous amount of heat in the inner chambers so I don't know how = long they will last, maybe there thick enough to take it ? However if = their cheap enough just replace them. George ( down under) From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Thursday, January 10, 2008 4:34 AM Subject: [FlyRotary] URL for HushPower It looks like Hushpower has been spun off from FlowMaster. Here = is the URL for the Hushpower site. http://www.hushpower.com/technology.html Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.dmack.net/mazda/index.html -------------------------------------------------------------------------= - No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.17.13/1214 - Release Date: = 8/01/2008 1:38 PM -------------------------------------------------------------------------= --- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.17.13/1214 - Release Date: = 8/01/2008 1:38 PM ------=_NextPart_000_000A_01C852F7.CEAE5370 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
  Hey, George
 
Talk is cheap {:>), I want to know when we = get to the=20 meaty part about how well it works?
 
I've done my experimenting with exhausts - every = time I=20 got one part of the problem fixed - like sound loudness, I experienced a = failure/draw back someplace else - of course, could just be my = ineptitude. =20 I really thought I had it when I put the 1/8" thick discs in the tubes - = it did=20 really knock the sound down, but the exhaust  pulses broke the = welds loose=20 and the discs spun fast enough to give the exhaust a turbine sound of = its ownl=20 {:>).
 
Looking forward to seeing the results, = George
 
Ed.
----- Original Message -----
From:=20 George=20 Lendich
Sent: Wednesday, January 09, = 2008 6:58=20 PM
Subject: [FlyRotary] Re: URL = for=20 HushPower

 
Ed,
 I believe if Dave Leonard can = now 'see=20 the light' through the muffler - it may be an indicator that the = sound waves=20 have broken through the joining cones. In any event it will only get = louder=20 at the passage gets bigger.
I figured this would be the weakest = link in=20 the HushPower design as it concentrates all the energy into the = smallest=20 area, holes in the cones also weaken the area - not so = with our=20 design.
George ( down under)
 
Ed,
Reflective cone theory is what Bill = Jepson and=20 I have designed into our joint venture exhaust = design  -=20 although I haven't finished it so I don't know how well it=20 works.
The principle is to maintain a = clear passage=20 for the exhaust flow but redirect the sound waves (which are energy) = therefore turning the sound into heat. In our design the heat = is=20 dissipated with cool air flow through the exhaust and further cool = air=20 around the exhaust.
 
However this is not a cheap exhaust = to make, as=20 mine is assembled out of a number of cones ( 1.6mm SS). I think the = cost of=20 the cones came to $200 and then there's the welding. There is also = the fact=20 that it is also not light because of the thickness of the=20 material.
 
The bottom line is that cones by = their nature=20 redirect sound energy into heat. The idea is to not have a direct = exit for=20 the sound energy - this has been achieved in this design by having = the sound=20 waves inter the center of a cone which is blocked-off and is = redirected=20 through the holes and redirected out.
 
So the theory in this design ( = HushPower) is=20 sound - excuse the pun. The packing material merely protects the = light outer=20 skin. There will be a tremendous amount of heat in the inner = chambers so I=20 don't know how long they will last, maybe there thick enough to take = it ?=20 However if their cheap enough just replace them.
 
George ( down under)
 
 
From:=20 Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Thursday, January 10, = 2008 4:34=20 AM
Subject: [FlyRotary] URL = for=20 HushPower

It looks like Hushpower has been spun off = from=20 FlowMaster.  Here is the URL for the Hushpower = site.
 
http://www.hushpower.co= m/technology.html
 
Ed
Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.comhttp://www.andersonee.com
http:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.dmack.net/mazda= /index.html

No virus found in this incoming message.
Checked by AVG = Free=20 Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1214 - = Release=20 Date: 8/01/2008 1:38 PM

No virus found in this incoming message.
Checked by AVG = Free=20 Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1214 - = Release=20 Date: 8/01/2008 1:38 PM
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