X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f222.google.com ([209.85.220.222] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3632532 for flyrotary@lancaironline.net; Tue, 05 May 2009 10:05:16 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.222; envelope-from=rwstracy@gmail.com Received: by fxm22 with SMTP id 22so4930691fxm.19 for ; Tue, 05 May 2009 07:04:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=Lr6Ght11bfURYB3h09+3VE8hGQfByGmJyIPAvZFdqkk=; b=TX8ykuxH4BE/yPLbt/d73E1Ow1SprTgIyoUfNISHvem8zBU8xafamF3/nkV/dt7x9F jRgOwFu4p8ZQkNSfXDfAGkUAjbfWHWcRzSAIfd9pophPl/GH0tnK2RpIMYE8f+ypTZwF M3x1vmYmKEcNg5UKbKqQTnY6d+vAp4Qnxpa8c= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=fVVz39+rwCHXV8Hg4Bgju7QMChryidSOxgR1EJZ4VpweETwL0Jxw3x7ZKM+tx09l53 KH9i8NvjckjLxgxO1i6SKsHCv2ykEZO0/mq4h8zVWCVBFUrpJHK+2VfFa5gkPhkoGTJe f8pr91hysAXKrv9HtUVKhc+e85AHxw1XfIaLA= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.142.13.13 with SMTP id 13mr34761wfm.150.1241532274922; Tue, 05 May 2009 07:04:34 -0700 (PDT) In-Reply-To: References: Date: Tue, 5 May 2009 10:04:34 -0400 X-Google-Sender-Auth: 810ed854eeeeb08f Message-ID: <1b4b137c0905050704h53327077n4675e6e293f44328@mail.gmail.com> Subject: Re: [FlyRotary] Re: finetuning2 From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000e0cd5097a39590104692ac236 --000e0cd5097a39590104692ac236 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 66mm is not oversize so I'm surprised with no increase in power after 2/3 throttle. Never hesitate to play with the mixture control when testing. It is the fastest way to educate yourself on the effects of mixture on performance, fuel burn, EGT curve, etc. You can't hurt a normally aspirated 13B with mixture (assuming ignition timing in the ballpark) so there's nothing to loose either. If that top speed was in IAS at 8500 you're not doing too bad anyway. Trace On Mon, May 4, 2009 at 11:16 PM, Don Wallker wrote: > Tracy, > 66 mm ford mustang throttle body, I believe suggested by you. To busy > flying to notice all the numbers. Mostly concentrating on flying and temps. > Alt 8500 ft, 40 Oat, No idea about manifold pressure. Mixture set at mid > range, but not really looked at. We have had a lot of weather here the last > few days, but is looking better toward the end of the week. I got the > diagram and printed it and realize it is a fix, not a solution. I'll get to > the airport tomorrow and draw a diagram of my electrical system, with > lengths, positioning, etc. I've never tried running without the main buss > off. I'll run it and see if there is a differance with only the Essential > buss on. Thanks for all the thoughts, all of you. > > Don > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --000e0cd5097a39590104692ac236 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 66mm is not oversize so I'm surprised with no increase in power after 2= /3 throttle.=A0=A0 Never hesitate to play with the mixture control when tes= ting.=A0 It is the fastest way to educate yourself on the effects of mixtur= e on performance, fuel burn, EGT curve, etc.=A0 You can't hurt a normal= ly aspirated 13B with mixture (assuming ignition timing in the ballpark) so= there's nothing to loose either.

If that top speed was in IAS at 8500 you're not doing too bad anywa= y.

Trace

On Mon, May 4, 2009 at 11= :16 PM, Don Wallker <drwalker@gbis.com> wrote:
Tracy,
66 mm ford mustang throttle body, I believe suggested by you. =A0To busy fl= ying to notice all the numbers. =A0Mostly concentrating on flying and temps= . =A0Alt 8500 ft, 40 Oat, No idea about manifold pressure. =A0Mixture set a= t mid range, but not really looked at. =A0We have had a lot of weather here= the last few days, but is looking better toward the end of the week. =A0I = got the diagram and printed it and realize it is a fix, not a solution. =A0= I'll get to the airport tomorrow and draw a diagram of my electrical sy= stem, with lengths, positioning, etc. I've never tried running without = the main buss off. =A0I'll run it and see if there is a differance with= only the Essential buss on. =A0Thanks for all the thoughts, all of you.
Don

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

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