Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 5.0) with ESMTP id 814545 for flyrotary@lancaironline.net; Fri, 04 Nov 2005 09:06:06 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-025-165.carolina.res.rr.com [24.74.25.165]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id jA4E5J1u005840 for ; Fri, 4 Nov 2005 09:05:19 -0500 (EST) Message-ID: <000701c5e148$cad50460$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Timing Date: Fri, 4 Nov 2005 09:05:20 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0004_01C5E11E.E1B2B120" 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-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0004_01C5E11E.E1B2B120 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message Joe, one thing to keep in mind. Your static timing setting is really = setting your Maximum possible advance - in other words, you can NOT = advance the timing beyond that point by electronic means. However, the controller can retard the timing simply by delaying the = time at which it fires the ignition modules. Your "Advance" under those = circumstances is really "less retard". So if you can not get sufficent advance then you must Mechancially = adjust the static timing. I mark on the pulley my static timing point = (35deg BTDC), then I pull the crank angle sensor and rotate it so that = the prong of the two prong rotor with the red dot on it is aligned with = the metal core of the pick up coil which has a red dot. (The pick up = coil on the side of the housing toward the pulley). When you reinsert = the crank angle sensor the merging of the gears will cause it to rotate = - so you might need to move it one way or the other a tooth. At that point I have 35Deg BTDC static timing. Now your system may call for different settings and I am not going to = tell you they are incorrect - but make certain that you understand the = timing markers on your pulley. I know some of the after market pulleys = are marked different from the stock pulley. And if you have a stock = pulley that does not match your engine (it has happened) that can also = add confusion to the "real" timing. I understand that the timing = reference pointer can be different from the 12A to the 13B cover as = well. You'll get it sorted out shortly. Main thing its RUNNING and Noise is = being make and exhaust gas are filling the air! {:>) Ed A ------=_NextPart_000_0004_01C5E11E.E1B2B120 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 
 Joe, one thing to = keep in=20 mind.  Your static timing setting is really setting your Maximum = possible=20 advance - in other words, you can NOT advance the timing beyond that = point by=20 electronic means.
 
However, the controller = can retard=20 the timing simply by delaying the time at which it fires the ignition=20 modules.  Your "Advance" under those circumstances is really = "less=20 retard".
 
So if you can not get = sufficent=20 advance then you must Mechancially adjust the = static timing.  I mark=20 on the pulley my static timing point (35deg BTDC), then I pull the = crank angle=20 sensor and rotate it so that the prong of the two prong rotor with the = red dot=20 on it is aligned with the metal core of the pick up coil which has a = red=20 dot.  (The pick up coil on the side of the housing toward = the=20 pulley). When you reinsert the crank angle sensor the merging of = the=20 gears will cause it to rotate - so you might need to move it one way = or the=20 other a tooth.
  At that point I = have 35Deg=20 BTDC static timing.
 
Now your system may = call for=20 different settings and I am not going to tell you they are incorrect - = but=20 make certain that you understand the timing markers on your = pulley.  I=20 know some of the after market pulleys are marked different from the = stock=20 pulley.  And if you have a stock pulley that does not match your = engine=20 (it has happened) that can also add confusion to the "real" = timing.  I=20 understand that the timing reference pointer can be different from the = 12A to=20 the 13B cover as well.
 
You'll get it sorted = out shortly.=20 Main thing its RUNNING and Noise is being make and exhaust gas are = filling the=20 air! {:>)
 
Ed A
 
 
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