X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail13.syd.optusnet.com.au ([211.29.132.194] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTPS id 2358201 for flyrotary@lancaironline.net; Fri, 28 Sep 2007 19:00:35 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.194; envelope-from=lendich@optusnet.com.au Received: from george (d58-104-139-168.dsl.nsw.optusnet.com.au [58.104.139.168]) by mail13.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l8SMxqfc021139 for ; Sat, 29 Sep 2007 08:59:53 +1000 Message-ID: <001901c80223$4ffb9da0$a88b683a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Carbs Date: Sat, 29 Sep 2007 09:00:05 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0016_01C80277.20CEB2C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0016_01C80277.20CEB2C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Bill, It's now recorded in my notes! George (down under) George, I printed a guide for ACRE in the DDP about the effectiveness of the = various jets vs. throttle opening. To quickly recapp, The pilot jet is = effective from idle to about 1/8 throttle, the slide cutaway works the = transition from around 1/16 to 1/3 throttle. The needle and needle jet, = and the multiple tapers on the needle, in a conventional carb work the = area from around 1/8 to 3/4 throttle and the main jet is the most = effective after that. The ranges do overlap some. To win a bet one of = the instructors athe Kawasaki took the main jets OUT of his 900 Kawasaki = and drove it to work all week on the freeway just to proove that most = people use the 1/8 to 1/2 throttle range 99% of the time. An airplane = does use the WOT area a lot more. FWIW Bill -----Original Message----- From: George Lendich To: Rotary motors in aircraft Sent: Fri, 28 Sep 2007 3:20 pm Subject: [FlyRotary] Re: Carbs George, The notch, or really the slide cutaway, is used to accellerate the = air over the pilot jet. This helps make the engine idle smoother. Bill Bill, Thanks for confirming that! George ( down under) -------------------------------------------------------------------------= ----- Email and AIM finally together. You've gotta check out free AOL Mail! -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.488 / Virus Database: 269.13.33/1036 - Release Date: = 28/09/2007 3:40 PM ------=_NextPart_000_0016_01C80277.20CEB2C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Bill,
It's now recorded in my = notes!
George (down under)
George,
I printed a guide for ACRE in the DDP about the effectiveness of = the=20 various jets vs. throttle opening. To quickly recapp, The pilot jet is = effective from idle to about 1/8 throttle, the slide cutaway works the = transition from around 1/16 to 1/3 throttle. The needle and needle = jet, and=20 the multiple tapers on the needle, in a conventional carb work the = area from=20 around 1/8 to 3/4 throttle and the main jet is the most effective = after that.=20 The ranges do overlap some. To win a bet one of the instructors athe = Kawasaki=20 took the main jets OUT of his 900 Kawasaki and drove it to work all = week on=20 the freeway just to proove that most people use the 1/8 to 1/2 = throttle range=20 99% of the time. An airplane does use the WOT area a lot more.=20 FWIW
Bill


-----Original Message-----
From: George = Lendich=20 <lendich@optusnet.com.au>
To: Rotary motors in aircraft=20 <flyrotary@lancaironline.net>
Sent: Fri, 28 Sep 2007 3:20=20 pm
Subject: [FlyRotary] Re: Carbs

 
George,
The notch, or really the slide cutaway, is used to=20 accellerate the air over the pilot jet. This helps make the engine = idle=20 smoother.
Bill

Bill,
Thanks for confirming = that!
George ( down=20 under)
Email and AIM finally together. You've gotta check out free AOL Mail!

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.488 / Virus Database: 269.13.33/1036 - = Release Date:=20 28/09/2007 3:40 PM
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