X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ob0-f181.google.com ([209.85.214.181] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6570865 for flyrotary@lancaironline.net; Wed, 30 Oct 2013 19:58:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.181; envelope-from=keltro@gmail.com Received: by mail-ob0-f181.google.com with SMTP id wp4so2300072obc.12 for ; Wed, 30 Oct 2013 16:58:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=7f9p/xfRbbUrrBRv8FqZX+Wh76jfRJXyPOPBSLMKwMU=; b=bgpeR2D5e+EAzemZ3TjszBLwIyPE4C2TFwEMkkgWcslMz/Gp355n4dZIx4KbgOsHgH CRwYIVmoaQfvrAQvJ19rSWqlQmR+IZ3nSG+gRyHZ7zgxMUy/UlRj+omxJYq1Fr6Ef4GQ 0ZWdGlcuTl3ykb385wvaGrfwvqOnc+yFf8pK0T+6hQP9XNU/DzFLGqGPHfvG+AJY3DEe tKQeiL0VB10ODkGdz2L/7aMU1aWYsLtCjO//5gAzzIAuFFUylTzEmbBu4Ftet+oVNjdA BjZvfklgFTchrUrlGAi4TfcNSR5l+nc4MAprbGuElPwBxI7ffULFnaYa6ZCl5N/cWCpB C9Ig== MIME-Version: 1.0 X-Received: by 10.60.155.145 with SMTP id vw17mr263407oeb.50.1383177489728; Wed, 30 Oct 2013 16:58:09 -0700 (PDT) Received: by 10.76.144.168 with HTTP; Wed, 30 Oct 2013 16:58:09 -0700 (PDT) In-Reply-To: References: Date: Wed, 30 Oct 2013 18:58:09 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Wrong turbo, maybe better this try From: Kelly Troyer To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=047d7bf0e94cefcb4004e9fe1ab3 --047d7bf0e94cefcb4004e9fe1ab3 Content-Type: text/plain; charset=ISO-8859-1 Dave, What is the A/R ratio of your TO-4E/50 turbine housing??..........My TO-4E/50 (hope to run in this lifetime) has a 1.15 A/R ratio turbine housing. Is your TO-4 what you were running at Reno ??.............. Thanks, Kelly Troyer Dyke Delta_"Eventually" 13B_RD1C_EC2_EM2 On Tue, Oct 29, 2013 at 5:33 PM, David Leonard wrote: > You are right Scott, that is a much better turbo, though I doubt you were > experiencing compressor stall at power settings you would want to use on > the ground. I also fly with the TO4E-50, but have used the 60-1 in the > past with good success. And yes, your turbine housing should be as big as > you can reasonably fit. > > Dave Leonard > > > On Tue, Oct 29, 2013 at 2:41 PM, Scott Emery wrote: > >> >> >> >> >> Here is a pic of my 13BT powered RV-8. I've already blown & rebuilt the >> engine, now I've learned from ground running and forums that the 60-1 turbo >> with .81 A/R housing was not good in 2 ways: the compressor was too large >> and the turbine housing too small. The resultant increase in exhaust Back >> pressure rising too rapidly with boost pressure. This held back any >> hoped-for power gain. Also, the compressor seems to have been on the verge >> of stall, with fluctuating boost pressure during tethered power testing. >> The pictured TO-4E has a 50 trim compressor & 1.30 A/R turbine house. I >> did run it briefly before I had to return to work, it ran very lean. I'll >> be reprogramming the EC-2 during the next run. This forum & Ross Farnham >> over on the Vansairforce were big helps getting me researching in the right >> direction. >> Possible future intercooler location is along the Charge Air pipe on the >> left side. The hot jacket water pipe will need to be relocated. >> >> Sent from my iPhone >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> > -- --047d7bf0e94cefcb4004e9fe1ab3 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Dave,

=A0 =A0What is the A/R ratio of your TO= -4E/50 turbine housing??..........My TO-4E/50 (hope to run in this lifetime= ) has a 1.15 A/R ratio turbine housing. Is your
TO-4 what you wer= e running at Reno ??..............

Thanks,

Kelly Troyer
Dyke D= elta_"Eventually"
13B_RD1C_EC2_EM2


On Tue, Oct 29, 2013 at 5:33 PM= , David Leonard <wdleonard@gmail.com> wrote:
You are right Scott, that is a much bette= r turbo, though I doubt you were experiencing compressor stall at power set= tings you would want to use on the ground. =A0I also fly with the TO4E-50, = but have used the 60-1 in the past with good success. =A0And yes, your turb= ine housing should be as big as you can reasonably fit.

Dave Leonard


<= div class=3D"gmail_quote">On Tue, Oct 29, 2013 at 2:41 PM, Scott Emery <sh= ipchief@aol.com> wrote:




Here is a pic of my 13BT powered RV-8. I've already blown & rebuilt= the engine, now I've learned from ground running and forums that the 6= 0-1 turbo with .81 A/R housing was not good in 2 ways: the compressor was t= oo large and the turbine housing too small. The resultant increase in exhau= st Back pressure rising too rapidly with boost pressure. This held back any= hoped-for power gain. Also, the compressor seems to have been on the verge= of stall, with fluctuating boost pressure during tethered power testing. The pictured TO-4E has a 50 trim compressor & 1.30 A/R turbine house. I= did run it briefly before I had to return to work, it ran very lean. I'= ;ll be reprogramming the EC-2 during the next run. This forum & Ross Fa= rnham over on the Vansairforce were big helps getting me researching in the= right direction.
Possible future intercooler location is along the Charge Air pipe on the le= ft side. The hot jacket water pipe will need to be relocated.

Sent from my iPhone
--
Homepage: =A0http:/= /www.flyrotary.com/
Archive and UnSub: =A0 http://mail.lancaironline.net:81/lists= /flyrotary/List.html





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