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 2639037 for flyrotary@lancaironline.net; Thu, 10 Jan 2008 08:12:26 -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-omta01.mail.rr.com with SMTP id <20080110131145.VILV16228.cdptpa-omta01.mail.rr.com@edward2> for ; Thu, 10 Jan 2008 13:11:45 +0000 Message-ID: <001801c8538a$6a6734c0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: URL for HushPower Date: Thu, 10 Jan 2008 08:12:13 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01C85360.815F2040" 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_0015_01C85360.815F2040 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I understand, George. Was pulling your leg a bit. Still looking = forward to the results when you get it there. Ed ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Thursday, January 10, 2008 2:34 AM Subject: [FlyRotary] Re: URL for HushPower Ed, Indeed talk is cheap, however I've had to spend a bit so far and my = poor allowance only goes so far. I've been bucking for an increase but = the boss ( she who must be obeyed) won't give me one. The problem is = I've still got two apprentices living at home - you know family first = etc. I will get onto it soon though, but I haven't got a single engine = complete to test it on - I designed it for the single but with slight = mods it will also do the 2 rotor. You were on the right track Ed, but you can't put exposed edges to the = rotary exhaust - I see the holes in the cones as exposed edges. I have some photo's somewhere but can't find them, as soon as I do I = will post them. It does look spectacular!! George ( down under) 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 -------------------------------------------------------------------------= --- 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_0015_01C85360.815F2040 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
I understand, George.  Was pulling your leg = a=20 bit.  Still looking forward to the results when you get it=20 there.
 
Ed
----- Original Message -----
From:=20 George=20 Lendich
Sent: Thursday, January 10, = 2008 2:34=20 AM
Subject: [FlyRotary] Re: URL = for=20 HushPower

Ed,
Indeed talk is cheap, however I've = had to spend a=20 bit so far and my poor allowance only goes so far. I've been bucking = for an=20 increase but the boss ( she who must be obeyed) won't give me one. The = problem=20 is I've still got two apprentices living at home - you know family = first=20 etc.
 
I will get onto it soon though, but I = haven't got=20 a single engine complete to test it on - I designed it for the single = but with=20 slight mods it will also do the 2 rotor.
 
You were on the right track Ed, but = you can't put=20 exposed edges to the rotary exhaust - I see the holes in the cones as = exposed=20 edges.
 
I have some photo's somewhere but = can't find=20 them, as soon as I do I will post them. It does look=20 spectacular!!
George ( down under)

  Hey, George
 
Talk is cheap {:>), I want to know when = we get to=20 the meaty part about how well it works?
 
I've done my experimenting with exhausts - = every time=20 I got one part of the problem fixed - like sound loudness, I = experienced a=20 failure/draw back someplace else - of course, could just be my=20 ineptitude.  I really thought I had it when I put the 1/8" = thick discs=20 in the tubes - it did really knock the sound down, but the exhaust=20  pulses broke the welds loose and the discs spun fast enough to = give=20 the exhaust a turbine sound of its ownl {:>).
 
Looking forward to seeing the results,=20 George
 
Ed.
----- Original Message ----- =
From:=20 George Lendich
To: Rotary motors in = aircraft=20
Sent: Wednesday, January = 09, 2008=20 6:58 PM
Subject: [FlyRotary] Re: = URL for=20 HushPower

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

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
------=_NextPart_000_0015_01C85360.815F2040--