Propeller Gearbox - BRP 912 Series Operator's Manual

7.6) Propeller gearbox

Reduction ratio
Overload clutch
Effectivity: 912 Series
Rev. 1
For the engine type 912 one reduction ratio is available.
Reduction ratio
crankshaft: propeller
shaft
Depending on engine type, certification and configuration the
propeller gearbox is supplied with or without an overload clutch.
NOTE
This overload clutch will prevent any undue load to the crank-
shaft in case of ground contact of the propeller.
NOTE
The overload clutch is installed on serial production on all certi-
fied aircraft engines and on the non-certified aircraft engines of
configuration 3.
Figure 8: Overload clutch
Fig. shows a propeller gearbox of configuration 2 with the inte-
grated overload clutch.
BRP-Rotax
912 A/F/UL 912 S/ULS
2.27:1
2.43:1 (option)
Ed.4/January 01 2023
2.43:1
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