X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA03.emeryville.ca.mail.comcast.net ([76.96.30.32] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3545852 for flyrotary@lancaironline.net; Thu, 12 Mar 2009 22:04:11 -0400 Received-SPF: none receiver=logan.com; client-ip=76.96.30.32; envelope-from=gregw@onestopdesign.biz Received: from OMTA11.emeryville.ca.mail.comcast.net ([76.96.30.36]) by QMTA03.emeryville.ca.mail.comcast.net with comcast id SR7F1b0040mlR8UA3S3cmr; Fri, 13 Mar 2009 02:03:36 +0000 Received: from osd1 ([24.6.40.29]) by OMTA11.emeryville.ca.mail.comcast.net with comcast id SS3b1b00Q0dkeQQ8XS3bul; Fri, 13 Mar 2009 02:03:35 +0000 Message-ID: <436E9F4350DB4EA59A8B26A253AF0D35@yosemite.onestopdesign.biz> From: "Greg Ward" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Fw: [FlyRotary] progress on N178RG Date: Thu, 12 Mar 2009 19:08:29 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A0_01C9A345.EDC39AA0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_00A0_01C9A345.EDC39AA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable That's why it's called "Experimental", the key word, "mental". We plan = on cutting it (the 4" exhaust) into an oval, ala' turbine exhausts, and = see what happens. We have cooling and oil lines coming into the lower = cowl, and honestly don't want the heat there if we can help it. Greg ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Thursday, March 12, 2009 8:47 AM Subject: [FlyRotary] Re: Fw: [FlyRotary] progress on N178RG 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. =20 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. =20 Greg Ward ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Monday, March 09, 2009 5:18 AM Subject: [FlyRotary] Re: Fw: [FlyRotary] progress on N178RG Greg,=20 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. =20 Mark S. On Sun, Mar 8, 2009 at 9:10 PM, Greg Ward = wrote: ----- Original Message -----=20 From: Greg Ward=20 To: Rotary motors in aircraft=20 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 ------=_NextPart_000_00A0_01C9A345.EDC39AA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
That's why it's called "Experimental", the = key word,=20 "mental".  We plan on cutting it (the 4" exhaust)=20 into an oval, ala' turbine = exhausts, and=20 see what happens.  We have cooling and oil lines coming into the = lower=20 cowl, and honestly don't want the heat there if we can help=20 it.
Greg
----- Original Message -----
From:=20 Mark = Steitle=20
Sent: Thursday, March 12, 2009 = 8:47=20 AM
Subject: [FlyRotary] Re: Fw: = [FlyRotary]=20 progress on N178RG

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=20 on the left and I didn't want to risk asphyxiating myself and my = pax.  My=20 DNA muffler exits out the left tunnel and just about fills=20 the tunnel.  I'm considering adding some louvers on the left = side=20 cowl for the oil cooler exit air.  I think it would really help = with the=20 oil temps, maybe enough to allow removal of the oil-to-water = exchanger. =20 It would also provide additional flow for the water radiator.  = But, as I=20 stated above, it will add to my cooling drag.  Then again, maybe = I should=20 just leave things alone.   
 
Mark

On Mon, Mar 9, 2009 at 10:36 AM, Greg Ward = <gregw@onestopdesign.biz>=20 wrote:
Hey Mark;
Yeah, it's a Legacy, and to flip it = over, we have=20 to wheel it outside, and crank the rotisserie as high as it will go, = lotta'=20 fun.  As to the turbo and exhaust, they occupy the whole lower = left=20 area of the cowl, and exit directly out the side,  and as I = said below,=20 we are leaving the stock exhaust bubbles in the lower cowl intact = for heat=20 to exit. Tests will tell how effective this is.  =
Greg Ward
 
----- Original Message ----- =
From: = Mark Steitle
To: Rotary = motors in=20 aircraft
Sent: Monday, March 09, = 2009 5:18=20 AM
Subject: [FlyRotary] Re: = Fw:=20 [FlyRotary] progress on N178RG

Greg,
 
That is a cool looking scoop.  I'm looking forward = to=20 seeing the side profile.  This is a Lancair Legacy, = correct? =20 (BTW, how do you flip it over inside the garage?)
One comment... don't underestimate the heat generated by the = 20B=20 exhaust.  I think one of the big benefits of having the = radiator=20 inside the cowl is that the airflow helps to cool the=20 white-hot exhaust.  Without that airflow, you risk = melting=20 anything within sight of the exhaust. 
 
Mark S.
On Sun, Mar 8, 2009 at 9:10 PM, Greg Ward = <gregw@onestopdesign.biz> wrote:
 
----- Original Message -----=20
From: Greg Ward
Sent: Sunday, March 08, 2009 7:06 PM
Subject: Re: [FlyRotary] progress on = N178RG

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

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



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