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Magneto and Air Distributor timing

 
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richard.goode(at)russiana
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PostPosted: Mon Apr 20, 2020 1:06 am    Post subject: Magneto and Air Distributor timing Reply with quote

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°

















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 ± 1º
15,8




M9-35M
32
-4,4 ± 0,5°
-2,9 ± 0,5°
33
-5,3 ± 0,5°
-3,5 ± 0,5°
34
-6,2 ± 0,5°
-4,1 ± 0,5°
35
-7,1 ± 0,5°
-4,6 ± 0,5°
36
-8 ± 0,5°
-5,2 ± 0,5°
37
-8,8 ± 0,5°
-5,8 ± 0,5°



RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.


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tigeryak18t



Joined: 26 Sep 2009
Posts: 233
Location: PARIS FRANCE

PostPosted: Mon Apr 20, 2020 4:31 am    Post subject: Magneto and Air Distributor timing Reply with quote

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 à 11:09, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> a écrit :

Quote:

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°
 
 
 
 
 
 
 
 
8°
 
 
 
 
 
 
 
 
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 ± 1º
15,8
 
 
 
 
M9-35M
32
-4,4 ± 0,5°
-2,9 ± 0,5°
33
-5,3 ± 0,5°
-3,5 ± 0,5°
34
-6,2 ± 0,5°
-4,1 ± 0,5°
35
-7,1 ± 0,5°
-4,6 ± 0,5°
36
-8 ± 0,5°
-5,2 ± 0,5°
37
-8,8 ± 0,5°
-5,8 ± 0,5°
 
 
 
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel:  +44 (0)1544 340120   Fax:  +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
 


--
____________________________
Didier BLOUZARD
Directeur Général DATEXIS Portable : +33 6 51 84 48 02
Email: didier.blouzard(at)gmail.com (didier.blouzard(at)anolistech.fr)


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