X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2016859 for flyrotary@lancaironline.net; Sun, 29 Apr 2007 22:04:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=atlasyts@bellsouth.net Received: from ibm66aec.bellsouth.net ([65.2.49.24]) by imf23aec.mail.bellsouth.net with ESMTP id <20070430020352.CPGG25088.imf23aec.mail.bellsouth.net@ibm66aec.bellsouth.net> for ; Sun, 29 Apr 2007 22:03:52 -0400 Received: from [192.168.0.59] (really [65.2.49.24]) by ibm66aec.bellsouth.net with ESMTP id <20070430020351.FOON12853.ibm66aec.bellsouth.net@[192.168.0.59]> for ; Sun, 29 Apr 2007 22:03:51 -0400 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <3EF97C68-7F51-42FE-88CE-730905B5CDC4@bellsouth.net> Content-Transfer-Encoding: 7bit From: Bulent Aliev Subject: Re: [FlyRotary] Re: Throttle body size Date: Sun, 29 Apr 2007 22:03:53 -0400 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.2) Thanks Ed. At 60mm looks like my TB is on the small side. I'll start looking for something a bit bigger and let you know how it works. Buly On Apr 29, 2007, at 8:26 PM, Ed Anderson wrote: > Hi Buly, > > I have tired throttle bodies as big as 75mm, I went back to a 65 mm > Mustang Throttle body. Here is what I found. > > The larger throttle body provided no measurable increase in power > produced - in fact, the power actually went down as my static fell > 200 rpm. I did find that suddenly opening the large 75mm TB would > cause the engine to bog and hesitate for a second. It was > suggested that I push the throttle in more slowly, well, Scotty, > when I want full power I want it NOW! > > In any case, I now fly and have flown with the 65 mm for 3 years. > I can turn 6000 rpm static on a standard day and upto 6200 static > on those wonderful cold mornings. I can shove the throttle in as > fast as I can and there is no bog or hesitation. > > That is what my experience has been. For a full up all out race > engine, I am certain Paul's suggestion has merit, but for our > usage, I did not find a large TB provided any improvement and > actually make flying less pleasant. > > Ed > > ----- Original Message ----- From: "Bulent Aliev" > > To: "Rotary motors in aircraft" > Sent: Sunday, April 29, 2007 6:05 PM > Subject: [FlyRotary] Throttle body size > > >> I originally planned and tried TA set up on my Cosmo 13B. Soon >> after the first few flights removed the turbo and vent NA. At the >> time did not pay much attention on the throttle body size, >> counting on the turbo to make up for any losses. Today I measured >> the inside opening of the TB and was surprised to find it was >> only 60mm. This is rather small. Paul Lamar on his visit also >> said I should get a bigger one. I wander what size TB other >> people are using, or any comments and suggestions on the matter >> will be helpful. >> >> Buly >> >> >> >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net:81/lists/ >> flyrotary/List.html > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/ > flyrotary/List.html