Rotax 914 series User Manual

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

Rotax 914 series Specifications

General

Bore	79.5 mm
Stroke	61 mm
Compression Ratio	9.0:1
Cooling System	Liquid-cooled cylinder heads, air-cooled cylinders
Redline	5800 rpm
Engine Type	4-cylinder, 4-stroke
Fuel Type	Avgas 100LL
Oil System	Dry sump
Fuel System	fuel injection
TBO (Time Between Overhauls)	2000 hours
Displacement	1.211 liters (1211 cc)
Power Output	84.6 kW (115 hp) at 5, 800 rpm