---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Fri 06/28/13: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:44 PM - Magnetos (Walter Lannon) ________________________________ Message 1 _____________________________________ Time: 09:44:59 PM PST US From: "Walter Lannon" Subject: Yak-List: Magnetos Hi All; I have a question basically for Richard Goode and George Coy but also for anyone else interested. It is a result of the following question to me : ------ =9CCan I replace my M9F magneto on the M14P with a DZ5 (Chinese) magneto?=9D. My answer has been a qualified =9CNo, I don=99t think it=99s a good idea=9D even though I know it has been done and the reported results are good. This response has nothing to do with the different timing requirements of a fixed spark mag. VS an auto advance mag. which I try to explain to the questioner. To the best of my knowledge there are only four versions of this magneto: 1. The basic M9 of which the DZ5 is a license built copy (though, I guess we could call that 2 versions), 2. The M9-25M, 3. The M9-35M and 4. The M9F. Versions 1 & 2 are auto advance type with a range of 23 to 27 degs. Version 3 is also auto advance but with an extended range of 23 to 37 degs. and version 4 which is a fixed spark magneto with no auto advance mechanism. The basic M9 (DZ5) to the best of my knowledge is the standard magneto on various engines with a maximum RPM of less than 2400. The M9-25M and the M9-35M are approved alternates for the M14P and the M9-35M is the standard magneto for the M14PF. Much of this is my observation and not necessarily fully accurate. Since the M14P and, presumably, the M14PF engines have a much higher maximum RPM than the earlier versions I suspect that the M25M and the M35M (in addition to the extended range of the latter) have a different advance mechanism than the basic M9 (DZ5). I expect there are different counter weights and/or return spring tensions involved. Am I right or wrong? If wrong what is the actual difference between the M9 and the M9-25M? Have at it guys!! Cheers; Walt ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-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/yak-list Browse Digests http://www.matronics.com/digest/yak-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.