X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-yh0-f48.google.com ([209.85.213.48] verified) by logan.com (CommuniGate Pro SMTP 6.0.6) with ESMTPS id 6440117 for flyrotary@lancaironline.net; Sat, 24 Aug 2013 11:03:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.48; envelope-from=ceengland7@gmail.com Received: by mail-yh0-f48.google.com with SMTP id f73so443891yha.21 for ; Sat, 24 Aug 2013 08:02:30 -0700 (PDT) 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:content-transfer-encoding; bh=HnfDMvVgid5AoToWcWkBa1FgJqiq6ynKu3UAUVsOf9w=; b=lN2fXIvCv8u4HLfKPVVf/+vFWyToHaapL0KclhcTK6mp3W8ydW8GPqLTmqvhZFJUDW xPOCuOHC5ABeV15GQjjT0cyZKgTxwmkI1LcoqsYd+WLdj6jmxWCgwQsdI57ee4XIpRCU YHYa1kh11S5VdesKUecAoVgKf2rRNnNvSyWgT0wxs+Do7S6WixzCT60JUroCCAqcY0tk yfopaU6t0C5RV8+foriN18ej8t6eIqJj7SnE8j2SgrCuLr8C41IKhDyzs9gHRxtrp/DF fAnS3ym1kcOT1OEe2qm528UOGB57CezDfOz3Hg9v46TA+kUBImSjfcW9U8ZHZRlRoMR6 2t1A== X-Received: by 10.236.88.108 with SMTP id z72mr1018551yhe.65.1377356550537; Sat, 24 Aug 2013 08:02:30 -0700 (PDT) Return-Path: Received: from [192.168.10.17] (adsl-98-95-185-136.jan.bellsouth.net. [98.95.185.136]) by mx.google.com with ESMTPSA id u52sm6468397yhg.5.1969.12.31.16.00.00 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 24 Aug 2013 08:02:29 -0700 (PDT) Message-ID: <5218CB04.8010804@gmail.com> Date: Sat, 24 Aug 2013 10:02:28 -0500 From: Charlie England User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130308 Thunderbird/17.0.4 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Injector Location References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 08/23/2013 07:56 AM, Thomas Mann wrote: > I wonder why nobody sets up the second set of injectors the same way > the primaries are setup (i.e. shoot through the iron into the intake > port. ) > That would sure simplify things and pretty much match up the fuel > delivery method. > Is there a logical/rational reason this isn't configured in this manner? > ......or .... has someone already done this? > T Mann I'll take a wild shot. I didn't do it because the bosses aren't in the irons. I *suspect* that Mazda didn't do it because (at least on the Renesis) there's really no place to put them & be able to feed secondary fuel to both the main & 'aux' secondary intakes. There's also some evidence that moving the injectors upstream can, in some cases, help BSFC. Charlie