X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qw-out-2122.google.com ([74.125.92.26] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3545211 for flyrotary@lancaironline.net; Thu, 12 Mar 2009 11:47:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.92.26; envelope-from=msteitle@gmail.com Received: by qw-out-2122.google.com with SMTP id 8so312951qwh.25 for ; Thu, 12 Mar 2009 08:47:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=rAZpCJBBe1cUXK4pLr2R+aqDgFkri2urnqGxpKVBU1k=; b=hi9wdiqqNeHwsvH7Kpaj/MdBRo95FmsFQN4ic/72stpimDt85YBDqdLS1WGIHAwNS9 pDIVuqQshWljBsyCZOz0hUIkWMkhe/IejrW5+AfCI6iYII+DPJfstKxSczMU99nhm3Qz bOq/i9pXbhRwWdi6OWTUFyYydxChAZaaPM224= 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=dxdiZes8839kgSJ8wEROTypdP7H6O9Xkbjij0HVDyx4DsRWdv4/rkaXuJRn5WiCNAQ Rs4AdGiv8PdU/qNcRH+JkJj6aZWnXeHprJ56vn54voGS8m5SF6geUMoL5lxWqLQuFe3n DRzCnI7YBLfbTd1XKvt7oA5jA6HyD0B/P9/Pw= MIME-Version: 1.0 Received: by 10.224.11.137 with SMTP id t9mr193426qat.178.1236872841111; Thu, 12 Mar 2009 08:47:21 -0700 (PDT) In-Reply-To: References: Date: Thu, 12 Mar 2009 10:47:21 -0500 Message-ID: <5cf132c0903120847u2ffc604bu5f9c1c61baa50124@mail.gmail.com> Subject: Re: [FlyRotary] Re: Fw: [FlyRotary] progress on N178RG From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015175cd02a53a8a70464ede6c5 --0015175cd02a53a8a70464ede6c5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Greg, The "exhaust exit out the side" should look really cool, but will certainly add drag to your airframe. I didn't do this because my door is on the left and I didn't want to risk asphyxiating myself and my pax. My DNA muffler exits out the left tunnel and just about fills the tunnel. I'm considering adding some louvers on the left side cowl for the oil cooler exit air. I think it would really help with the oil temps, maybe enough to allow removal of the oil-to-water exchanger. It would also provide additional flow for the water radiator. But, as I stated above, it will add to my cooling drag. Then again, maybe I should just leave things alone. Mark On Mon, Mar 9, 2009 at 10:36 AM, Greg Ward wrote: > *Hey Mark;* > *Yeah, it's a Legacy, and to flip it over, we have to wheel it outside, > and crank the rotisserie as high as it will go, lotta' fun. As to the turbo > and exhaust, they occupy the whole lower left area of the cowl, and exit > directly out the side, and as I said below, we are leaving the stock > exhaust bubbles in the lower cowl intact for heat to exit. Tests will tell > how effective this is. * > *Greg Ward* > ** > > ----- Original Message ----- > *From:* Mark Steitle > *To:* Rotary motors in aircraft > *Sent:* Monday, March 09, 2009 5:18 AM > *Subject:* [FlyRotary] Re: Fw: [FlyRotary] progress on N178RG > > Greg, > > That is a cool looking scoop. I'm looking forward to seeing the side > profile. This is a Lancair Legacy, correct? (BTW, how do you flip it over > inside the garage?) > One comment... don't underestimate the heat generated by the 20B exhaust. > I think one of the big benefits of having the radiator inside the cowl is > that the airflow helps to cool the white-hot exhaust. Without that airflow, > you risk melting anything within sight of the exhaust. > > Mark S. > On Sun, Mar 8, 2009 at 9:10 PM, Greg Ward wrote: > >> >> ----- Original Message ----- *From:* Greg Ward >> *To:* Rotary motors in aircraft >> *Sent:* Sunday, March 08, 2009 7:06 PM >> *Subject:* Re: [FlyRotary] progress on N178RG >> >> *A few shots of our cooling system finally mounted as far as the >> firewall. The two 1-1/2" cooling lines will be covered with 3" 1/2 round >> plastic covers, 2" smaller in diameter than the exhaust outlets on the >> cowling, which will continue to let heat from the engine exit. You can't >> see the oil cooler, as it is mounted inside the scoop, in a similiar fashion >> as the P-51.* >> *We are awaiting final engine dyno tests, and then we can mate the whole >> mess up, and start on the next phase.* >> *Greg Ward;* >> *Lancair 20B N178RG in progress* >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> > --0015175cd02a53a8a70464ede6c5 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Greg,
=A0
The "exhaust exit out the side" should look really cool, but= will certainly add drag to your airframe.=A0 I didn't do this because = my door is on the left and I didn't want to risk asphyxiating myself an= d my pax.=A0 My DNA muffler exits out the left tunnel and just about fills = the=A0tunnel.=A0 I'm considering adding some louvers on the left side c= owl for the oil cooler exit air.=A0 I think it would really help with the o= il temps, maybe enough to allow removal of the oil-to-water exchanger.=A0 I= t would also provide additional flow for the water radiator.=A0 But, as I s= tated above, it will add to my cooling drag.=A0 Then again, maybe I should = just leave things alone.=A0 =A0
=A0
Mark

On Mon, Mar 9, 2009 at 10:36 AM, Greg Ward <gregw@onestopde= sign.biz> wrote:
Hey Mark;
Yeah, it's a Legacy, and to flip it over,= we have to wheel it outside, and crank the rotisserie as high as it will g= o, lotta' fun.=A0 As to the turbo and exhaust, they occupy the whole lo= wer left area of the cowl, and exit directly out the side,=A0 and as I said= below, we are leaving the stock exhaust bubbles in the lower cowl intact f= or heat to exit. Tests will tell how effective this is.=A0 =
Greg Ward
=A0
----- Original Message -----
Sent: Monday, March 09, 2009 5:18 AM=
Subject: [FlyRotary] Re: Fw: [FlyRot= ary] progress on N178RG

Greg,
=A0
That is a cool looking scoop.=A0=A0I'm looking forward to seeing t= he side profile.=A0 This is a Lancair Legacy, correct?=A0 (BTW, how do you = flip it over inside the garage?)
One comment... don't underestimate the heat generated by the 20B e= xhaust.=A0 I think one of the big benefits of having the radiator inside th= e cowl is that=A0the airflow=A0helps to cool the white-hot=A0exhaust.=A0 Wi= thout that airflow, you risk melting anything within sight of the exhaust.= =A0
=A0
Mark S.
On Sun, Mar 8, 2009 at 9:10 PM, Greg Ward <gregw@onestopdesign.biz> wrote:
=A0
----- Original Message -----=20
To: Rotary motors in aircraft <= /div>
Sent: Sunday, March 08, 2009 7:06 PM
Subject: Re: [FlyRotary] progress on N178RG

A few shots of our cooling system finally mou= nted=A0as far as=A0the firewall.=A0 The=A0two 1-1/2" cooling lines wil= l be covered with 3" 1/2 round plastic covers,=A02" smaller in di= ameter than the exhaust outlets on the cowling, which will continue to let = heat from the engine exit.=A0 You can't see the oil cooler, as it is mo= unted inside the scoop, in a similiar fashion as the P-51.<= /div>
We are awaiting final engine dyno tests, and = then we can mate the whole mess up, and start on the next phase.
Greg Ward;
Lancair 20B N178RG in progress

--
Homepage: =A0http://www.flyrotary.com/
Archive and UnSub:= =A0 http://mail.lancaironline.net:81/lists/flyrotary/List.ht= ml



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