X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 27 Nov 2007 17:25:03 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-galgo.atl.sa.earthlink.net ([209.86.89.61] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2505944 for lml@lancaironline.net; Mon, 26 Nov 2007 15:47:32 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.61; envelope-from=douglasbrunner@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=NlQVa6ZJQ+QDkVaz/w8KoAvEDwLruVrbVjKuha9OcgfoHVMsmR2itOFwVPQ3tfYT; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MIMEOLE:X-ELNK-Trace:X-Originating-IP; Received: from [74.93.196.177] (helo=DFWK3391) by elasmtp-galgo.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1Iwkr2-0003i1-EQ for lml@lancaironline.net; Mon, 26 Nov 2007 15:46:56 -0500 X-Original-Message-ID: <005101c8306d$7ce26740$1dd0a60a@DFWK3391> From: "Douglas Brunner" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: Legacy Questions X-Original-Date: Mon, 26 Nov 2007 15:46:58 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004E_01C83043.93D326D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-ELNK-Trace: ad85a799c4f5de37c2eb1477c196d22294f5150ab1c16ac01a238acc8405a5b014c9a46ac03aa56178adce1f6db64365350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 74.93.196.177 This is a multi-part message in MIME format. ------=_NextPart_000_004E_01C83043.93D326D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I had also thought of using a turbo 360 but decided against it. Several = reasons: 1) There is a crossover point at which the turbo 360 produces more = horsepower than a normally aspirated 550, but it is fairly high up and I = thought I wouldn't be flying that high all that often. 2) Getting to that altitude would take more time - could make for = overall slower trip even though speed at altitude is greater. 3) Non-standard Legacy RG - probably worth less on resale 4) Turbo engine is intrinsically less fuel efficient for same = horsepower 5) More problems with a non-standard installation 6) Potential weight and balance issues=20 I also thought about using a turbo 550, but again decided against it. = It would be a real screamer, particularly at altitude, however it is a = lot of effort to "shoehorn" a turbo 550 into a Legacy. If you are = interested in going this route, you should take a look at Andy = Chiavetta's website: http://www.aerochia.com/kits_Legacy_turbo.html He has developed a complete kit to allow the installation of a turbo 550 = - and keep it cool. But it is not cheap when you include parts, labor, = additional cost of TSIO-550, additional maintenance and fuel costs. The Legacy RG with an IO-550 is a pretty nice blend of speed, and fuel = efficiency - especially if you fly it high and lean of peak. D. Brunner ----- Original Message -----=20 From: Tom Gourley=20 To: lml@lancaironline.net=20 Sent: Monday, November 26, 2007 2:47 PM Subject: [LML] Re: Legacy Questions "Why cant one put a 210HP on a Legacy RG?" Assuming an appropriate engine mount is available, or can be = fabricated, yes, you can use an IO-360 in a Legacy RG. It will = accelerate slower, climb slower, and cruise slower than an RG with an = IO-540 or IO-550. (By the way, a few people are using the Lycoming = IO-580). I haven't heard of a customer RG using the smaller engine but = if you do you might have to move some things around for balance reasons. = I think the factory prototype Legacy originally flew with a = turbo-normalized Lycoming IO-360. It had good performance at altitude = (i.e. up near 18,000 ft) but was a bit disappointing in takeoff and = climb. Of course the bottom line is the Legacy is experimental so you can use = whatever you want. Tom Gourley ------=_NextPart_000_004E_01C83043.93D326D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I had also thought of using a turbo 360 = but decided=20 against it.  Several reasons:
 
1)  There is a crossover point at = which the=20 turbo 360 produces more horsepower than a normally aspirated 550, = but it is=20 fairly high up and I thought I wouldn't be flying that high all = that=20 often.
2)  Getting to that altitude would = take more=20 time - could make for overall slower trip even though speed at altitude = is=20 greater.
3)  Non-standard Legacy RG - = probably worth=20 less on resale
4)  Turbo engine is intrinsically = less fuel=20 efficient for same horsepower
5)  More problems with a = non-standard=20 installation
6)  Potential weight and balance = issues=20
 
I also thought about using a turbo 550, = but again=20 decided against it.  It would be a real screamer, particularly = at=20 altitude, however it is a lot of effort to "shoehorn" a turbo = 550 into=20 a Legacy.  If you are interested in going this route, you should = take a=20 look at Andy Chiavetta's website: http://www.aeroch= ia.com/kits_Legacy_turbo.html
 
He has developed a complete kit to = allow the=20 installation of a turbo 550 - and keep it cool.  But it is not = cheap when=20 you include parts, labor, additional cost of TSIO-550, additional = maintenance=20 and fuel costs.
 
The Legacy RG with an IO-550 is a = pretty nice blend=20 of speed, and fuel efficiency - especially if you fly it high and lean = of=20 peak.
 
D. Brunner
----- Original Message -----
From:=20 Tom=20 Gourley
Sent: Monday, November 26, 2007 = 2:47=20 PM
Subject: [LML] Re: Legacy = Questions

"Why cant one put a 210HP on=20 a Legacy RG?"
 
Assuming an appropriate engine mount = is=20 available, or can be fabricated, yes, you can use an IO-360 in a = Legacy=20 RG.  It will accelerate slower, climb slower, and cruise slower = than an=20 RG with an IO-540 or IO-550.  (By the way, a few people are using = the Lycoming IO-580).  I haven't heard of a customer RG = using=20 the smaller engine but if you do you might have to move some = things=20 around for balance reasons.  I think the factory prototype = Legacy=20 originally flew with a turbo-normalized Lycoming IO-360.  It = had=20 good performance at altitude (i.e. up near 18,000 ft) but was a = bit=20 disappointing in takeoff and climb.
 
Of course the bottom line is the = Legacy is=20 experimental so you can use whatever you want.
 
Tom Gourley
 
 
 
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