X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-gx0-f224.google.com ([209.85.217.224] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3821646 for flyrotary@lancaironline.net; Sat, 22 Aug 2009 17:08:34 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.217.224; envelope-from=david.staten@gmail.com Received: by gxk24 with SMTP id 24so3645906gxk.1 for ; Sat, 22 Aug 2009 14:07:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=JLQ+aC54UhVyk9zTXJ7a4efKrWVfPA4woO1scFWLoyQ=; b=V3wCyLGT7RuZsHQuv2HgvXuLwuiWESzTbfZIZ036Ec3+PyIdZRhghYmP3RX0D+BZc4 8Yxnu4JkeuF6NwvMe7P1737OTKM2F0hEvgTsiJlNzW+I//8jrEn7nR9an19DBQx1xqD6 elZufcMYagSGf6teTppPFL+tvW4yXBlQXzGF0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; b=QSVlGehnmE/OCZlpKfTlsxumiFBGSw34Eup+etn6e8mDFhkWrD7f+xfVsJBmMxIpNm DYRgWL/mfKRFFd3XDN6l5lrDXbBkFDXMAUkGkseA2MY2JM0IH/XvLKGLvG7JqtFbrDEa 7/D8nxvQfNXA5JfU7frCFBEFwtgneEWdnsiY8= Received: by 10.91.180.9 with SMTP id h9mr2294893agp.81.1250975277188; Sat, 22 Aug 2009 14:07:57 -0700 (PDT) Return-Path: Received: from ?192.168.1.103? ([216.80.140.47]) by mx.google.com with ESMTPS id 4sm2181449aga.13.2009.08.22.14.07.55 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sat, 22 Aug 2009 14:07:56 -0700 (PDT) Message-ID: <4A905E39.3080600@gmail.com> Date: Sat, 22 Aug 2009 16:08:09 -0500 From: Dave User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Three or two? References: In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit While I am in favor of the rotary, it is worth saying that none of the very few currently flying turbo rotaries have had trouble free installations. I know of John Slade and Dave Leonard, and both have had more than one turbo failure in the process of finding what works. I do not know if Mistral is currently selling its turbo version. What sort of runway length and density altitude are we talking about, where you intend to operate? Dave Thomas Mann wrote: > > A two rotor engine produce close to 200 hp at 291 LBS (132 KGS) > > A two rotor with turbo can produce 230 hp at 328 LBS (149 KGS) > > A three rotor engine can produce 300hp at 390 LBS (177 KGS) > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > *On Behalf Of *Gonzalo A. Giménez Celis > *Sent:* Saturday, August 22, 2009 3:05 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Three or two? > > Hi group. As I told in previous questions, I’m building a Cozy MK IV, > and I like the Rotary idea. I would like to have between 200 and 250 > HP, since in Chile we don’t have such long runways like in the U.S. > and is a pretty mountainous country. Regarding this, which way is > better, a three or two rotor engine? Is the three rotor too heavy? Can > I use a turbo in a two rotor engine without affecting reliability and > weight? Etc… > > Thanks. > > Gonzalo > > Chile >