Propeller Gearbox; Reduction Ratio; Overload Clutch; Torsional Shock Absorber - Rotax 914 Series Operator's Manual

7.6) Propeller gearbox

General note

Reduction ratio

Overload clutch

Torsional shock
absorber
Effectivity: 914 Series
OM Edition 2 / Rev. 0
See Fig. 7
For the engine type 914 one reduction ratio is available
Reduction ratio
crankshaft: propeller shaft
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
NOTE: Fig. shows a propeller gearbox of configuration
2 with the integrated overload clutch.
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.
BRP-Powertrain
914 F/UL
2.43:1
April 01/2009
02531
page 7-12