X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from fed1rmmtao103.cox.net ([68.230.241.43] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2055254 for flyrotary@lancaironline.net; Sun, 20 May 2007 12:45:57 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.43; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao103.cox.net (InterMail vM.7.05.02.00 201-2174-114-20060621) with ESMTP id <20070520164518.OIMT19731.fed1rmmtao103.cox.net@fed1rmimpo02.cox.net> for ; Sun, 20 May 2007 12:45:18 -0400 Received: from BigAl ([72.192.132.90]) by fed1rmimpo02.cox.net with bizsmtp id 1UlJ1X0021xAn3c0000000; Sun, 20 May 2007 12:45:18 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Frustration. The seriesl.... Date: Sun, 20 May 2007 09:45:44 -0800 Message-ID: <000001c79b06$b119b6f0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C79AC3.A2F676F0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C79AC3.A2F676F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Yes, the 20B uses an external injector relay. This is optional (it says = so on the schematic, but Tracy recommends including it) and can be left out = if the builder does not want to be able to run only on primary or secondary injectors in case of an emergency, such as one injector decides to quit working. It uses the Cold Start circuit to double the flow to whichever bank of injectors are chosen. Pretty clever, but rather confusing to = wire. =20 I detect some confusion here - maybe just mine - but the 20B has an = external staging relay which is not optional. It has nothing to do with the = injector enable/disable switches - which are optional. The 2 rotor version does not have external staging relay. =20 Al ------=_NextPart_000_0001_01C79AC3.A2F676F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Yes, the 20B uses an external injector = relay. This is optional (it says so on the schematic, but Tracy recommends including it) and can be left out if the builder does not = want to be able to run only on primary or secondary injectors in case of an = emergency, such as one injector decides to quit working. It uses = the Cold Start circuit to double the flow to whichever bank of injectors are chosen. Pretty clever, but rather confusing to = wire.

I detect some confusion here - = maybe just mine – but the 20B has an external staging relay which is not optional. It has nothing to do with the injector enable/disable = switches – which are optional.

The 2 rotor version does not have external staging relay.

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