---------------------------------------------------------- M14PEngines-List Digest Archive --- Total Messages Posted Thu 03/15/07: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:08 AM - Re: Adjusting rotor position on M9-35 mags (Darin Bishop) 2. 12:33 PM - Re: Adjusting rotor position on M9-35 mags (George Coy) ________________________________ Message 1 _____________________________________ Time: 08:08:13 AM PST US From: "Darin Bishop" Subject: Re: M14PEngines-List: Adjusting rotor position on M9-35 mags " Please email me directly as I only get the digest." Doesn't this exclude everyone else from the benefit of being on the list? If anyone has an answer, which I wish I did, could you please also post it to the list? I'm curious what the solution to his problem is. Thanks, Darin Bishop www.2wings.com ________________________________ Message 2 _____________________________________ Time: 12:33:49 PM PST US From: "George Coy" Subject: RE: M14PEngines-List: Adjusting rotor position on M9-35 mags No. The rotor moves according to speed. It must be lag the #4 point at idle and will lead as it advances 35 deg. If you put the rotor at the # 4 pin at static then when it advances 35 degrees when running, it will fire the # 6 plug!. There are only 40 deg between each spark plug electrode (360 deg / 9 = 40 deg). Arc tracking and other carbonization inside the rotor cap is usually caused by other factors. Things like bad coil/capacitor. Moisture in the cap dirt in the cap etc. George -----Original Message----- From: John Nafziger [mailto:jsnafziger@yahoo.com] Sent: Thursday, March 15, 2007 9:37 AM Subject: RE: M14PEngines-List: Adjusting rotor position on M9-35 mags George, So I'm correct that the rotor must be adjusted so it points to the mark on the mag signaling the #4 plug. The fact that it doesn't, has nothing to do with the mechanical advance (stamped 36 degs) and was an error in the initial setup. Yes, I make sure the slick start is only on during start, that is if I can get it started! Below 50 degs F, it will not start. Thanks for you help, John --- George Coy wrote: > John, > There is a mechanical advance mechanism in the magneto. The angle > stamped op the magneto cover is the amount of advance angle. (usually > 30 to > 35 deg). This is the amount the rotor will advance when the shaft > rotates above a certain RPM ( I believe it is 600 RPM).. > It is important that the SLICK start ONLY be engaged while starting > and must be OFF after the engine is running. > George > > -----Original Message----- > From: owner-m14pengines-list-server@matronics.com > [mailto:owner-m14pengines-list-server@matronics.com] On Behalf Of John > Nafziger > Sent: Wednesday, March 14, 2007 8:00 PM > To: M14PEngines-List@matronics.com > Subject: M14PEngines-List: Adjusting rotor position on M9-35 mags > > --> > > I've been experiencing difficult starting. I checked the timing on > the mags and the points open correctly set at -5 deg ATDC (these are > M9-35 mags with > 36 deg built in timing). > > I noted that the left cap had arcing and a lot of carbon. A problem > that I see is that when the mag is timed to fire the #4 plug points > opening, the rotor is still 10 degs BEFORE the #4 wire position in the > cap (I'm guessing this explains the arcing). The right mag is > correctly positioned so the points open AND the rotor points to the #4 > plug. Note this is the single finger rotor with the slick start > energizing the P-lead, not the booster coil and dual finger rotor > setup. > > Assuming the above is not correct, how do you adjust the rotor postion > on these mags? It seems that I need to KEEP the cam that the points > ride on in the same spot, but shift the rotor. I noted an adjustment > on the lower "bar" that inserts into the rubber drive block, but I > think that will adjust both the cam and the rotor position. > > Please email me directly as I only get the digest. > -----Original Message----- From: owner-m14pengines-list-server@matronics.com [mailto:owner-m14pengines-list-server@matronics.com] On Behalf Of Darin Bishop Sent: Thursday, March 15, 2007 11:06 AM Subject: Re: M14PEngines-List: Adjusting rotor position on M9-35 mags --> " Please email me directly as I only get the digest." Doesn't this exclude everyone else from the benefit of being on the list? If anyone has an answer, which I wish I did, could you please also post it to the list? I'm curious what the solution to his problem is. Thanks, Darin Bishop www.2wings.com ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message m14pengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/M14PEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/m14pengines-list Browse Digests http://www.matronics.com/digest/m14pengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.