X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from lincoln.lisco.com ([69.18.32.37] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4367736 for flyrotary@lancaironline.net; Wed, 23 Jun 2010 09:00:34 -0400 Received-SPF: none receiver=logan.com; client-ip=69.18.32.37; envelope-from=rob@mum.edu Received: from dell (76-76-232-54.lisco.net [76.76.232.54]) by lincoln.lisco.com (Postfix) with SMTP id D23162BEFA for ; Wed, 23 Jun 2010 07:59:57 -0500 (CDT) Message-ID: Reply-To: "Rob" From: "Rob" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: TurboCharger as a muffler Date: Wed, 23 Jun 2010 07:59:57 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0027_01CB12AA.126B6700" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 This is a multi-part message in MIME format. ------=_NextPart_000_0027_01CB12AA.126B6700 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks John and Chris for your inputs. Sounds like I should continue to = persue this course. I've been reading your posts for a long time with = great intrust. I will go back and read them again until I can ask more = intelligent questions. Robert Bollinger MR722 MUM 1000 N.4th ST Fairfield, IA 52557 (641)919-3213 ----- Original Message -----=20 From: John Slade=20 To: Rotary motors in aircraft=20 Sent: Tuesday, June 22, 2010 10:29 PM Subject: [FlyRotary] Re: TurboCharger as a muffler >the engine seems to be producing "scarey power" Chris, Power is only "scary" when it goes away unexpectedly. John BTW - I often call my wife from the hold-point so she knows what time = I took off. We can hear each other fine. Chris Barber wrote:=20 As I have mentioned recently my new turbo quiets my 13b = significantly. My Honda Shadow Saber motorcycle is now louder. I could = actually use my cell phone while in the plane. In fairness, I did tell = the caller, my mom, to hold on a sec while I walked back into the = hangar....but it IS quieter and I do get the kewl sounds of the = turbo/BOV.....zoom zoom zoom....bbswooooosh I wish I could help with a good single source for or turbo info. = The guys at www.turbochargers.com were helpful both on the phone and in = person. I was about to state what John just said about the compression, but = he beat me to it. I am using the standard low compression rotors = though. I am running 3lb boost and the engine seems to be producing "scarey = power"...but it could just be me. 3 lb boost, at 34 MP and just over = 6300 rpm WOT. RDb 2.17 Redrive. Chris Barber Houston, GSOT -------------------------------------------------------------------------= --- From: Rotary motors in aircraft [flyrotary@lancaironline.net] on = behalf of Rob [rob@mum.edu] Sent: Tuesday, June 22, 2010 9:05 PM To: Rotary motors in aircraft Subject: [FlyRotary] TurboCharger as a muffler Hi everyone, I am preparing my Bruce Turrentine 20B hybrid engine for my BD-4. = As I am thinking about all the details it occured to me that a turbo = would be a great muffler based on the experience of those on this list = who have them. It turns out that the price of a good turbo has come down = to the point that it is almost as cheap as it would be to fabricate a = good inconell exaust system. Then I can use it for boosting the engine = too. Is it reasonable to think like this? What do you all think of this = proposal? The only problem is that my 20B has the high compression 9.7:1 = rotors and I'm concerned about detenation. Is it possible with the right = components to maintain sealevel pressure on take off at full throttle = and then maintain 30" MP as I get higher? I have yet to figure out what components I need to do all this. I = have been reading as much as I can about turbocharging but I can't seem = to get good answers to the above questions. Does anyone know a good = place to go to learn more about turbocharging for aircraft or how to = select components for a specific mission? I would appreciate any comments or criticism on my musings. Brief = or extensive coments are welcome. Thanks everyone. Robert Bollinger Currently flying a BD-4 with a Ford V6 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0027_01CB12AA.126B6700 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks John and Chris for your inputs. = Sounds like=20 I should continue to persue this course. I've been reading your posts = for a long=20 time with great intrust. I will go back and read them again until I can = ask more=20 intelligent questions.
 
Robert Bollinger
MR722 MUM
1000 = N.4th=20 ST
Fairfield, IA 52557
(641)919-3213
----- Original Message -----
From:=20 John Slade
Sent: Tuesday, June 22, 2010 = 10:29=20 PM
Subject: [FlyRotary] Re: = TurboCharger as=20 a muffler

>the engine seems to be producing "scarey=20 power"
Chris,
Power is only "scary" when it goes away=20 unexpectedly.
John

BTW - I often call my wife from the = hold-point so=20 she knows what time I took off. We can hear each other = fine.

Chris=20 Barber wrote:=20
As I have mentioned recently my new turbo quiets my 13b=20 significantly.  My Honda Shadow Saber motorcycle is now = louder. I=20 could actually use my cell phone while in the plane.  In = fairness,=20 I did tell the caller, my mom, to hold on a sec while I walked back = into the=20 hangar....but it IS quieter and I do get the kewl sounds of the = turbo/BOV.....zoom zoom zoom....bbswooooosh
 
I wish I could help with a good single source for or turbo = info. =20 The guys at www.turbochargers.com = were helpful=20 both on the phone and in person.
 
I was about to state what John just said about the = compression,=20 but he beat me to it.  I am using the standard low compression = rotors=20 though.
 
I am running 3lb boost and the engine seems to be = producing=20 "scarey power"...but it could just be me.  3 lb boost, at 34 MP = and=20 just over 6300 rpm WOT. RDb 2.17 Redrive.
 
Chris Barber
Houston, GSOT
From: Rotary motors in aircraft [flyrotary@lancaironline.net]=20 on behalf of Rob [rob@mum.edu]
Sent: = Tuesday, June 22,=20 2010 9:05 PM
To: Rotary motors in = aircraft
Subject:=20 [FlyRotary] TurboCharger as a muffler

Hi everyone,
I am preparing my Bruce = Turrentine=20 20B hybrid engine for my BD-4. As I am thinking about = all the=20 details it occured to me that a turbo would be a great = muffler based=20 on the experience of those on this list who have them. It turns = out that=20 the price of a good turbo has come down to the point that it is = almost as=20 cheap as it would be to fabricate a good inconell exaust system. = Then I=20 can use it for boosting the engine too.
Is it reasonable to think like = this? What do=20 you all think of this proposal?
 
 
The only problem is that my 20B = has the high=20 compression 9.7:1 rotors and I'm concerned about detenation. = Is=20 it possible with the right components to maintain sealevel = pressure=20 on take off at full throttle and then maintain 30" MP as I = get=20 higher?
 
I have yet to figure out what = components I=20 need to do all this. I have been reading as much as I can about=20 turbocharging but I can't seem to get good answers to the above = questions.=20  Does anyone know a good place to go to learn more about=20 turbocharging for aircraft or how to select components for a = specific=20 mission?
 
 
I would appreciate any comments = or criticism=20 on my musings. Brief or extensive coments are = welcome.
 
Thanks everyone.
 
Robert Bollinger
Currently flying a BD-4 with a = Ford=20 V6

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