X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail16.syd.optusnet.com.au ([211.29.132.197] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTPS id 2640391 for flyrotary@lancaironline.net; Fri, 11 Jan 2008 01:20:27 -0500 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.197; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-79-144.dsl.nsw.optusnet.com.au [220.236.79.144]) by mail16.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m0B6Jc5V001606 for ; Fri, 11 Jan 2008 17:19:40 +1100 Message-ID: <002201c85419$f3792ea0$904fecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: URL for HushPower Date: Fri, 11 Jan 2008 16:19:39 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01C8546D.C3B3AD40" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C8546D.C3B3AD40 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Ed, I can't do the impossible {:>) I figure the first thing to do is get something that works and maybe = redesign for lightness. A lot of aviation muffler welders make their own = tapers etc.and they could be lighter. The off-the-shelf types are 1.6mm = and most are 316 SS, Perhaps 1.2 might do, also the outer skin ( heat = shield) is integral to the design. Hey It ain't too heavy! George ( down under) That's impressive, George. Remember, its got to be light {:>) Ed ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Thursday, January 10, 2008 5:53 PM Subject: [FlyRotary] Re: URL for HushPower Ed see attached, This is the parts count ( outer skin not shown) and my welder = doing an internal reflector. I must get this completed!! George ( down under) Ed, I know - I seen that smiley face. Still looking for photos. George 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 ------------------------------------------------------------------------ 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 -------------------------------------------------------------------------= --- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.19.0/1218 - Release Date: = 10/01/2008 1:32 PM ------=_NextPart_000_001F_01C8546D.C3B3AD40 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Ed,
I can't do the impossible = {:>)
I figure the first thing to do is get = something=20 that works and maybe redesign for lightness. A lot of aviation=20 muffler welders make their own tapers etc.and they could be = lighter. The=20 off-the-shelf types are 1.6mm and most are 316 SS, Perhaps 1.2 might do, = also=20 the outer skin ( heat shield) is integral to the design.
Hey It ain't too heavy!
George ( down under)
That's impressive, George.  Remember, its = got to be=20 light {:>)
 
Ed
----- Original Message -----
From:=20 George Lendich
To: Rotary motors in = aircraft=20
Sent: Thursday, January 10, = 2008 5:53=20 PM
Subject: [FlyRotary] Re: URL = for=20 HushPower

 
 Ed see attached,
This is the parts count ( outer = skin not=20 shown) and my welder doing an internal reflector.
I must get this completed!!
George ( down under)
 
Ed,
I know - I seen that smiley = face.
Still looking for photos.
George
 
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 Lendich =
To: Rotary motors in=20 aircraft
Sent: Thursday, January = 10, 2008=20 2:34 AM
Subject: [FlyRotary] = Re: URL for=20 HushPower

Ed,
Indeed talk is cheap, however = I've had to=20 spend a bit so far and my poor allowance only goes so far. = I've been=20 bucking for an increase but the boss ( she who must be obeyed) = won't=20 give me one. The problem is I've still got two apprentices = living at=20 home - you know family first etc.
 
I will get onto it soon = though, but I=20 haven't got a single engine complete to test it on - I = designed it for=20 the single but with slight mods it will also do the 2=20 rotor.
 
You were on the right track = Ed, but you=20 can't put exposed edges to the rotary exhaust - I see the = holes in the=20 cones as exposed edges.
 
I have some photo's somewhere = but can't=20 find 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=20 get to the meaty part about how well it works?
 
I've done my experimenting with = exhausts -=20 every time I got one part of the problem fixed - like sound=20 loudness, I experienced a failure/draw back someplace else - = of=20 course, could just be my ineptitude.  I really thought = I had it=20 when I put the 1/8" thick discs in the tubes - it did really = knock=20 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=20 of its ownl {:>).
 
Looking forward to seeing the = results,=20 George
 
Ed.
----- Original Message = -----
From:=20 George Lendich =
To: Rotary motors = in=20 aircraft
Sent: Wednesday, = January 09,=20 2008 6:58 PM
Subject: = [FlyRotary] Re: URL=20 for HushPower

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

It looks like Hushpower has = been spun=20 off from FlowMaster.  Here is the URL for the = Hushpower=20 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=20 AVG Free Edition.
Version: 7.5.516 / Virus = Database:=20 269.17.13/1214 - Release Date: 8/01/2008 1:38=20 PM

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

No virus found in this incoming message.
Checked = by AVG=20 Free 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

--
Homepage:  http://www.flyrotary.com/
Archive = and=20 UnSub:  =20 = http://mail.lancaironline.net:81/lists/flyrotary/List.html

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.516 / Virus Database: 269.19.0/1218 - = Release Date:=20 10/01/2008 1:32 PM
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