X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-iw0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4368049 for flyrotary@lancaironline.net; Wed, 23 Jun 2010 13:39:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=wdleonard@gmail.com Received: by iwn2 with SMTP id 2so2392183iwn.25 for ; Wed, 23 Jun 2010 10:38:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=mM+rTzoOppNbdy6M+FXf/YvtOi68K1fADMEpFVjbeeo=; b=p0wxcrLvKYRZIcxPREx4olNQrbX+7TeclA+0loCqMH4ZSpavID+RzLP7aBwG0G58tR E5wUjQPphldNhVuQCahEtmjOIYrwGROLIA9HzqijrkLDEx7OvgC3PCiwvSRqznSm4YS5 gBw9VX233aVWx9e9l34SoMdtI5EyMCovC2I+A= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=EGKBbzFQf5ONONHJxRJgteQQqIeucaCB4Qi9HoSSL8Fjg3mMinnvRHsIUoCcZlmogj egUjo3QbicvUngOgRakCNELZoQ8VMVffO34uUudfc93MoTs1jkJpC1QYWxpqypNQusFk x2JmLr2RCBDHaUmHDFq9H7ykl2QbQJIHEZfi4= MIME-Version: 1.0 Received: by 10.231.184.1 with SMTP id ci1mr9695904ibb.39.1277314707532; Wed, 23 Jun 2010 10:38:27 -0700 (PDT) Received: by 10.231.34.67 with HTTP; Wed, 23 Jun 2010 10:38:27 -0700 (PDT) In-Reply-To: References: Date: Wed, 23 Jun 2010 10:38:27 -0700 Message-ID: Subject: Re: [FlyRotary] Re: TurboCharger as a muffler From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0016367b6f7a68ac420489b601d9 --0016367b6f7a68ac420489b601d9 Content-Type: text/plain; charset=ISO-8859-1 I have to call ATC from the hold short on my cell phone to get IFR release all the time. Never had them complain. -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Tue, Jun 22, 2010 at 8:29 PM, John Slade wrote: > >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: > > 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 > > --0016367b6f7a68ac420489b601d9 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
I have to call ATC from the hold short on my cell phone to get IFR rel= ease all the time.=A0 Never had them complain.
=A0
--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net


On Tue, Jun 22, 2010 at 8:29 PM, John Slade <jslade@canar= daviation.com> wrote:
>the engine seems to be producing "scarey power&q= uot;
Chris,
Power is only "scary" when it goes away u= nexpectedly.
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.=20


Chris Barber wrote:=20
As I have mentioned recently my new turbo quiets my=A013b significantl= y.=A0 My Honda Shadow=A0Saber motorcycle is now louder. I could=A0actually = use my cell phone while in the plane.=A0 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=A0kewl sounds of the turbo/BOV.....zoom=A0zoom zo= om....bbswooooosh
=A0
I wish I could help with a good single source for or turbo info.=A0 Th= e guys at=A0www= .turbochargers.com were helpful both on the phone and in person.
=A0
I was about to=A0state what John just said about the compression, but = he beat me to it.=A0 I am using the standard low compression rotors though.=
=A0
I am running=A03lb boost and the engine seems to be producing "sc= arey power"...but it could just be me.=A0 3 lb boost, at 34 MP and jus= t over 6300 rpm WOT.=A0RDb 2.17 Redrive.
=A0
Chris Barber
Houston, GSOT
Hi everyone,
I am preparing my Bruce Turrentine 20B= =A0hybrid engine=A0for my BD-4. As I am thinking about all the details it= =A0occured to me that a turbo would be a great muffler based on the experie= nce of those on this list who have them. It turns out that the price of a g= ood 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 boost= ing the engine too.
Is it reasonable to think like this? W= hat do you all think of this proposal?
=A0
=A0
The only problem is that my 20B has th= e high compression 9.7:1 rotors and I'm concerned about=A0detenation. I= s it=A0possible with the right components to maintain sealevel pressure on = take off at full=A0throttle and then maintain 30" MP as I get higher?<= /font>
=A0
I have yet to figure out what componen= ts I need to do all this. I have been reading as much as I can about turboc= harging but I can't seem to get good answers to the above questions. = =A0Does anyone know a good place to go to learn more about turbocharging fo= r aircraft or how to select components for a specific mission?
=A0
=A0
I would appreciate any comments or cri= ticism on my musings. Brief or extensive coments are welcome.
=A0
Thanks everyone.
=A0
Robert Bollinger
Currently flying a BD-4 with a Ford V6=




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