Reference
Modification-No.
- 0 -
Page
90
Date
1996 05 10
Install
914 F
20) Propeller drive
The propeller in tractor-or pusher arrangement has to be fitted on the propeller flange in
accordance to current certification. As required utilize one of the three possible pitch circle
diameters (P.C.D.) on the flange.
Certification of the propeller sizing and arrangement to the latest requirement such as FAR
or JAR has to be conducted by the aircraft builder.
▲ WARNING: Never run the engine without a propeller installed as engine would suffer
severe damage by overspeeding.
Never fit propeller directly on crankshaft.
20.1) Technical data:
See illustration 68.
➪ direction of rotation
of the prop flange: counter clockwise, looking towards face of flange
➪ location: see system of coordinates
➪ attachment of propeller on prop shaft flange:
P.C.D 75 mm (2,95"): 6 bolt holes of 8 mm dia
P.C.D 80 mm (3,15"): 6 bolt holes of 11,5 mm dia
P.C.D 101,6 mm (4"): 6 bolt holes of 13 mm dia.
➪ ratio of gear reduction: 2,4286 (51 T/21 T)
➪ max. torque: 340 Nm (103 ft.lb.) at propeller
➪ max. moment of inertia : 6000 kgcm
2
➪ max. permitted
out-of-balance on a prop: max. 0,5 gm
Lk = ø101,6
Lk = ø80
Lk = ø75
ø12,975
ø11,5
ø13,025
ø8
+0,2
8,5
P
ø47
-0,05
Ill. 68
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