X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-yh0-f51.google.com ([209.85.213.51] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6611713 for flyrotary@lancaironline.net; Sat, 23 Nov 2013 19:38:53 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.51; envelope-from=ceengland7@gmail.com Received: by mail-yh0-f51.google.com with SMTP id c41so335800yho.38 for ; Sat, 23 Nov 2013 16:38:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=SQuXWWSDzg33Z4/GzpvU/Zn5kYvJThZsrrGBsj5yaIc=; b=dB6+gSyrhRVNFnfj3XF1v2BMtwB4pMThA0YPgw685rr/PSycM2r/kTRLseiUe4fOHq cobsdyUPMuu0iNwSksRhXUZIe6qklNpQqDEGDhZgJANaGdIDwYUYdYmCyQHcJltBzqFM 7+GyQusGOXPLdTKSY6sZ8ObMzdFud5cJVtl8NLk60Qj8YNsgiFzBW5lxhL27m4Po9e17 i7oF/yMisE/Hs3WjvMZnB8AJkxTA/XoujNEWhWiG4G2F0dMeGyE02OCBemyApAlS1C7s fXdQqRGbJZjQmrzXCHPI2v1x510cTZSvo9iJ2PfIxzWCkf5XBWwV+qKIRNJNHmtA2f62 YOsw== X-Received: by 10.236.188.232 with SMTP id a68mr19858513yhn.8.1385253499743; Sat, 23 Nov 2013 16:38:19 -0800 (PST) Return-Path: Received: from [192.168.10.7] (adsl-98-95-170-37.jan.bellsouth.net. [98.95.170.37]) by mx.google.com with ESMTPSA id s46sm65963454yha.27.2013.11.23.16.38.18 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 23 Nov 2013 16:38:19 -0800 (PST) Message-ID: <52914A7F.3020506@gmail.com> Date: Sat, 23 Nov 2013 18:38:23 -0600 From: Charlie England User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.1.1 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] I now have a tail number References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060907090801010209010905" This is a multi-part message in MIME format. --------------060907090801010209010905 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 11/23/2013 12:34 PM, William Mason wrote: > Well, it is at least reserved... > > N713BT is mine, or I guess that Mine is now N713BT depending upon how > you want to look at it. > > She'll be going to the newly leased hangar in about a week, but my > intake, exhaust, wiring, avionics, and more are all at various stages > on non-completion. > > Thought I'd share. > > > I do have to ask though. It would seem that the Sam James cowling > that I have is set up for a standard aircraft engine with an offset to > match. (one of the nostrils is closer to the prop disc than the other) > > Is this common? (I don't have a plan if it is not) > > > > > Congrats on the N#. Is this an RV-x? Almost all Lycs/Conts on tractor installations will have a down/right offset angle. The James cowl I used has the offset built in, just like yours. The crank centerline is centered, with the rear of the engine offset up/left to create the angle. I built my mount with 0 offsets, expecting significant rudder requirements on takeoff, but (hopefully) little to no compensation needed at cruise, with maybe a .001% improvement in thrust efficiency. :-) I'll fix the gap around the spinner, but I honestly don't know whether I'll bother messing with the different inlet spacings. If it makes you feel any better, most Lyc builders have to do significant glass work around the spinner/cowl interface, too. Charlie --------------060907090801010209010905 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit

On 11/23/2013 12:34 PM, William Mason wrote:

Well, it is at least reserved...

N713BT is mine, or I guess that Mine is now N713BT depending upon how you want to look at it.

She'll be going to the newly leased hangar in about a week, but my intake, exhaust, wiring, avionics, and more are all at various stages on non-completion.

Thought I'd share.

I do have to ask though. It would seem that the Sam James cowling that I have is set up for a standard aircraft engine with an offset to match. (one of the nostrils is closer to the prop disc than the other)

Is this common? (I don't have a plan if it is not)

Congrats on the N#.

Is this an RV-x? Almost all Lycs/Conts on tractor installations will have a down/right offset angle. The James cowl I used has the offset built in, just like yours. The crank centerline is centered, with the rear of the engine offset up/left to create the angle. I built my mount with 0 offsets, expecting significant rudder requirements on takeoff, but (hopefully) little to no compensation needed at cruise, with maybe a .001% improvement in thrust efficiency. :-) I'll fix the gap around the spinner, but I honestly don't know whether I'll bother messing with the different inlet spacings.

If it makes you feel any better, most Lyc builders have to do significant glass work around the spinner/cowl interface, too.

Charlie
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