Return-Path: <13brv3@bellsouth.net> Received: from [205.152.59.65] (HELO imf17aec.bellsouth.net) by logan.com (CommuniGate Pro SMTP 4.1b8) with ESMTP id 2443215 for flyrotary@lancaironline.net; Wed, 25 Jun 2003 13:04:01 -0400 Received: from rad ([68.212.3.238]) by imf17aec.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030625170401.MLRL3647.imf17aec.bellsouth.net@rad> for ; Wed, 25 Jun 2003 13:04:01 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: tach Date: Wed, 25 Jun 2003 12:04:01 -0500 Message-ID: <000701c33b3b$c65b3040$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01C33B11.DD852840" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C33B11.DD852840 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Speaking of temporary gauges, the tach output of the AC-2 is supposed to be 12 pulses per revolution. I'm assuming that's something that's used only for the EIS, and not for normal tachs. Do you just tap into a fuel injection, or ignition lead for normal tach pulses? Sorry to talk to myself here, but I think I just realized that I don't need to hook up a temporary tach. I have an optical tach, and should be able to read the prop RPM from the cockpit (I did this to verify the tach on my previous RV-8). I'll just have to do the math. I'm still a little curious where you hook up a regular tach to the engine. Rusty Turbo 13B powered RV-3 (experimental aircraft)...Be Afraid :-) 1993 RX-7 R1... Not stock, carry bail money :-) ------=_NextPart_000_0008_01C33B11.DD852840 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Speaking of temporary gauges, the tach output of the = AC-2 is supposed to be 12 pulses per revolution. I’m assuming = that’s something that’s used only for the EIS, and not for normal = tachs. Do you just tap into a fuel injection, or ignition lead for normal tach pulses?

Sorry to talk to myself here, but I = think I just realized that I don’t need to hook up a temporary tach. = I have an optical tach, and should be able to read the prop RPM from the = cockpit (I did this to verify the tach on my previous RV-8). I’ll just = have to do the math. I’m still a little curious where you hook up a = regular tach to the engine.

Rusty

Turbo 13B powered RV-3 (experimental aircraft)...Be = Afraid :-)

1993 RX-7 R1... Not stock, carry bail money = :-)

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