Reference
Modification-No.
- 0 -
Page
16
Date
1996 05 10
Install
914 F
7) Description of design
7.1) Designation of type
Basic type
e.g. ROTAX 914 F2:
F2: with prop flange for fix pitch propeller
F3: with prop flange with drive of hydraulic governor for constant speed propeller
F4: with prop flange for fix pitch propeller, but prepared for retro-fit of hydraulic
governor for constant speed prop
Optional extras to the above stated basic type:
◆ NOTE: Conversion of the types F2 / F4 to type F3 may be accomplished by
the manufacturer (BOMBARDIER-ROTAX).
7.2) Standard engine design
➪ 4 stroke, 4 cyl. horizontally opposed, spark ignition engine with turbo charger,
single central camshaft hydraulic tappets - push rods - OHV
➪ liquid cooled cylinder heads
➪ ram air cooled cylinders
➪ dry sump, forced lubrication
➪ dual ignition of breakerless, capacitor discharge design
➪ 2 constant depression carburetors and airbox
➪ 2 electric fuel pumps (12V DC)
➪ prop drive via integrated gear box with torsional shock absorber and overload
clutch
➪ stainless steel exhaust system
➪ engine suspension frame
➪ expansion tank (coolant)
➪ electric starter
➪ integrated AC generator with external rectifier regulator (12V 250 W)
➪ oil tank
➪ external start relay
➪ hydraulic governor for constant speed prop: (optional extra) (on F3 only)
➪ external alternator (optional extra) (12V 40A DC)
➪ vacuum pump (optional extra) (feasible on F2 and F4 only)
➪ drive for rev-counter / hour-meter (optional extra)
external
alternator
vacuum
pump
drive for rev-counter/
hour meter
for F2 yes yes yes
for F3 yes no yes
for F4 yes yes yes