Rotax 914 series - Propeller Gearbox; Reduction Ratio; Overload Clutch; Torsional Shock Absorber

Effectivity: 914 Series BRP-Powertrain page 7-12
OM Edition 2 / Rev. 0 April 01/2009
d04479.fm
7.6) Propeller gearbox
General note See Fig. 7
Reduction ratio For the engine type 914 one reduction ratio is available
Overload clutch Depending on engine type, certification and configuration the pro-
peller gearbox is supplied with or without an overload clutch.
NOTE: This overload clutch will prevent any undue load
to the crankshaft in case of ground contact of
the propeller.
NOTE: The overload clutch is installed on serial pro-
duction on all certified aircraft engines and on
the non-certified aircraft engines of configura-
tion 3.
Fig. 7
02531
NOTE: Fig. shows a propeller gearbox of configuration
2 with the integrated overload clutch.
Torsional shock
absorber
The design incorporates a torsional shock absorber. The shock
absorbing is based on progressive torsional cushioning due to axi-
al spring load acting on a dog hub.
Reduction ratio 914 F/UL
crankshaft: propeller shaft 2.43:1