X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-yx0-f180.google.com ([209.85.213.180] verified) by logan.com (CommuniGate Pro SMTP 5.4c2o) with ESMTPS id 4874064 for flyrotary@lancaironline.net; Thu, 17 Feb 2011 15:36:10 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.180; envelope-from=afm528@gmail.com Received: by yxd30 with SMTP id 30so2903289yxd.25 for ; Thu, 17 Feb 2011 12:35:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:from:to:references:in-reply-to:subject:date :message-id:mime-version:content-type:x-mailer:thread-index :content-language; bh=xWrhjPP7veME47O6uyiqYmks+610udT6oume2zdEkRY=; b=v2SUQWErJcQzrggFQQnLa0czlquthNorRx7uuyOjGgsK6ghIGJpH8aTUgHMne/pYSe HzLXwFYMRnGUCTTfkbR01VBq1vgi/gSsdptfAQ1R32c33M5BV1vIv+xK+ijXZ0jfodXv /y1nxO12Hu79d034XuPcfL0e22L8XQZQjwllY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:references:in-reply-to:subject:date:message-id:mime-version :content-type:x-mailer:thread-index:content-language; b=Ut3N3VIwGF6mVRf2YeWrhbzdEUY86YSDPUJu/mPjRY8f90VAOl7ymsnfnqixWn575T luMYhhi0Cqsco2mK8ECiGFNJgVIjV7Kj5AGEnQd7Ki0mOR2mu75YlgBNRg9kKr4ctd1O n94OMGdXPisiKsBd/wACAmfmqrVgoNLizvUlg= Received: by 10.150.191.18 with SMTP id o18mr2870606ybf.312.1297974934226; Thu, 17 Feb 2011 12:35:34 -0800 (PST) Return-Path: Received: from MichaelHP (c-67-188-227-32.hsd1.ca.comcast.net [67.188.227.32]) by mx.google.com with ESMTPS id k1sm873119ybj.0.2011.02.17.12.35.32 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 17 Feb 2011 12:35:33 -0800 (PST) From: "Michael McMahon" To: "'Rotary motors in aircraft'" References: <065a01cbceda$4ca8e2c0$e5faa840$@moto.aero> In-Reply-To: <065a01cbceda$4ca8e2c0$e5faa840$@moto.aero> Subject: RE: [FlyRotary] Re: Pressure increase from ram air Date: Thu, 17 Feb 2011 12:35:42 -0800 Message-ID: <06a701cbcee2$403e8140$c0bb83c0$@gmail.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_06A8_01CBCE9F.321D1600" X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQFXS6SAoIzk/UcDBaRhacYVHw9UmwMQB+h1lNaswiA= Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_06A8_01CBCE9F.321D1600 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Please forgive me if this is obvious, but is it possible to convert 2" of mercury to X lbs. of boost, as in a turbo? I'd love to see the math if anyone can show me. Thanks, Mike From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Sent: Thursday, February 17, 2011 11:09 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Pressure increase from ram air Yes, 2" of Hg, but that was at top speed when racing (224 mph), not cruise. My ram air inlet is about 1" behind the prop which may affect the amount. Tracy On Thu, Feb 17, 2011 at 1:33 PM, Ernest Christley wrote: Tracy, you've said before that you can estimate 2" of pressure increase from ram air at cruise. Is that 2" of mercury? -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_06A8_01CBCE9F.321D1600 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Please forgive me if this is obvious, but is it possible to convert 2” of mercury to X lbs. of boost, as in a turbo?  I’d love to see the math if anyone can = show me. 

 

Thanks,

 

Mike

 

From:= = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On = Behalf Of Tracy
Sent: Thursday, February 17, 2011 11:09 = AM
To: Rotary motors in aircraft
Subject: = [FlyRotary] Re: Pressure increase from ram air

 

Yes, 2" of Hg, but that was at top = speed when racing (224 mph), not cruise.  My ram air inlet is about = 1" behind the prop which may affect the = amount.

Tracy

On Thu, Feb = 17, 2011 at 1:33 PM, Ernest Christley <echristley@att.net> = wrote:


Tracy, you've said before = that you can estimate 2" of pressure increase
from ram air at = cruise.  Is that 2" of mercury?

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub: =   http://mail.lancaironline.net:81/lists/flyrotary/List.h= tml

 

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