Effectivity: 912 Series BRP-Powertrain page 7-8
OM Edition 2 / Rev. 0 April 01/2010
d04679.fm
7.5) Propeller gearbox
General note See Fig. 5
Reduction ratio For the engine type 912 two reduction ratios are available.
Overload clutch Depending on engine type, certification and configuration the pro-
peller gearbox is supplied with or without an overload clutch.
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. 5
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 912 A/F/UL 912 S/ULS
crankshaft: propeller shaft 2.27:1
2.43:1
2.43:1 (optional)
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