---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Mon 04/20/20: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:06 AM - FW: Magneto and Air Distributor timing (Richard Goode) 2. 05:31 AM - Re: FW: Magneto and Air Distributor timing (Didier Blouzard) 3. 06:47 AM - Coils (Richard Goode) ________________________________ Message 1 _____________________________________ Time: 02:06:06 AM PST US From: "Richard Goode" Subject: Yak-List: FW: Magneto and Air Distributor timing I thought I might throw a small pebble into the seemingly now-tranquil waters of magneto discussion! What is not always known is that while all M9F magnetos have exactly the same timing, there are actually six different models of the M9-35M, and all with slightly different timing. These variants are identified by a number which is stamped onto the outside of the magneto case, and the timing for the different variants is given in the table below. Magneto and Air Distributor timing Setting of the magneto timing Air distributor timing Propeller ration control check Engine type Magneto type Value Stamped into the case Measured on the crankshaft Measured on the propeller shaft On the cranksha ft On the propeller shaft M-14 P M9-25M 23 2,3 1,4 12=B0 8=B0 0,658 1,1 mm 24 1,4 1 25 1 0,5 26 0,2 0,13 27 -1 -0,4 M-9F -23 =B1 1=BA 15,8 M9-35M 32 -4,4 =B1 0,5=B0 -2,9 =B1 0,5=B0 33 -5,3 =B1 0,5=B0 -3,5 =B1 0,5=B0 34 -6,2 =B1 0,5=B0 -4,1 =B1 0,5=B0 35 -7,1 =B1 0,5=B0 -4,6 =B1 0,5=B0 36 -8 =B1 0,5=B0 -5,2 =B1 0,5=B0 37 -8,8 =B1 0,5=B0 -5,8 =B1 0,5=B0 RICHARD GOODE AEROBATICS Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129 e-mail: richard.goode@russianaeros.com www.russianaeros.com WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with Aerometal Kft, Hungary. ________________________________ Message 2 _____________________________________ Time: 05:31:26 AM PST US From: Didier Blouzard Subject: Re: Yak-List: FW: Magneto and Air Distributor timing Hello Richard Thank you for this table.. This is incredibly usefull data when needed. Impossible to find otherwise. Great thanks for sharing. Didier Le lun. 20 avr. 2020 =C3- 11:09, Richard Goode a =C3=A9crit : > I thought I might throw a small pebble into the seemingly now-tranquil > waters of magneto discussion! > > > What is not always known is that while all M9F magnetos have exactly the > same timing, there are actually six > > different models of the M9-35M, and all with slightly different timing. > These variants are identified by a number > > which is stamped onto the outside of the magneto case, and the timing for > the different variants is given in the > > table below. > > > *Magneto and Air Distributor timing* > > > Setting of the magneto timing > > Air distributor timing > > > Propeller ration > > > control check > > > Engine type > > > Magneto type > > Value Stamped into the case > > > Measured on the crankshaft > > > Measured on the propeller shaft > > > On the cranksha ft > > > On the propeller shaft > > > M-14 P > > > M9-25M > > 23 > > 2,3 > > 1,4 > > > 12=C2=B0 > > > 8=C2=B0 > > > 0,658 > > > 1,1 mm > > 24 > > 1,4 > > 1 > > 25 > > 1 > > 0,5 > > 26 > > 0,2 > > 0,13 > > 27 > > -1 > > -0,4 > > M-9F > > > *-23 =C2=B1 1=C2=BA* > > 15,8 > > > M9-35M > > 32 > > -4,4 =C2=B1 0,5=C2=B0 > > -2,9 =C2=B1 0,5=C2=B0 > > 33 > > -5,3 =C2=B1 0,5=C2=B0 > > -3,5 =C2=B1 0,5=C2=B0 > > 34 > > -6,2 =C2=B1 0,5=C2=B0 > > -4,1 =C2=B1 0,5=C2=B0 > > 35 > > -7,1 =C2=B1 0,5=C2=B0 > > -4,6 =C2=B1 0,5=C2=B0 > > 36 > > -8 =C2=B1 0,5=C2=B0 > > -5,2 =C2=B1 0,5=C2=B0 > > 37 > > -8,8 =C2=B1 0,5=C2=B0 > > -5,8 =C2=B1 0,5=C2=B0 > > > *RICHARD GOODE AEROBATICS* > > *Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK* > > Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129 > > e-mail: richard.goode@russianaeros.com > > www.russianaeros.com > > *W**ORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES* > > *In partnership with Aerometal Kft, Hungary.* > > -- ____________________________ Didier BLOUZARD Directeur G=C3=A9n=C3=A9ral DATEXIS Portable : +33 6 51 84 48 02 Email: didier.blouzard@gmail.com ________________________________ Message 3 _____________________________________ Time: 06:47:08 AM PST US From: "Richard Goode" Subject: Yak-List: Coils I hope that Matt will allow me a little bit of advertising! We have known for a number of years that the original Russian coils are failing and indeed in Europe have had several forced landings as result of this. We consulted with a UK company who overhaul magnetos for historic racing cars who felt that the main problem was that the capacitor, an important part of the coil sits inside the coil of hotwire and over a period of time through a combination of age and heat will slowly degrade until it fails, and even if it is only in one magneto, the symptoms are a total, if momentary stoppage. Over a period of time this will get worse until the engine will stop for a significant period. Working with this company we developed, some 30 months ago, a new coil with a high-technology Panasonic capacitor bonded to the outside of the coil, as well as improvements to the materials used. These have been very successful, but this small company could not produce sufficient coils for us. Then, UK CAA realise that we were selling coils, but without any paperwork - this being deliberate. Of course we do not have the freedoms that you lucky guys have in the USA, and they began grounding various perfectly airworthy aircraft belonging to our customers. And at the same time, they asked us (quite nicely) if we could make a formal application to certify the coils. I had absolutely no idea of the amount of bureaucracy and testing that this would involve - but I suspect it would be the same if one wanted to get full certification for a new coil with the FAA! Before this, we had also decided to investigate a larger capacity manufacturing unit, and came to an agreement with AYC Ltd in China. They are one of the largest oil manufacturers in the world; making over 1 million a year, ranging from lawnmowers up to Ferrari cars. Although we represent incredibly small business in their terms, they were extremely enthusiastic about getting into the aviation business. We have found them superb partners; technically incredibly capable and very responsive. So it has been the AYC coils that went through this testing process for certification, and through the use of much better materials, these coils give a spark that is 15% to 20% stronger than a perfect Russian coil, and we now have them in full production. Importantly we now have full certification from UK CAA and EASA who control all aviation in Europe, which must be an indication of quality! Please contact us if you need any more information about these coils. RICHARD GOODE AEROBATICS Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129 e-mail: richard.goode@russianaeros.com www.russianaeros.com WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with Aerometal Kft, Hungary. ------------------------------------------------------------------------------------- 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.