Thu, Oct 16, 2008
At the US Sport Aviation Expo, Aero-TV caught up with an old
friend, Eric Tucker... a guy who is known worldwide as "Mr. Rotax."
The most well-known (and easily the hardest working) expert on the
Rotax 900 series sport and certified engines, Eric took a few
minutes to help us profile each of the amazingly compact, powerful
and fuel-efficient 900 series engines starting with our personal
favorite... the 115 HP Turbocharged Rotax 914.
With a dry weight of 141 pounds, the Rotax 914 UL DCDI 115HP
engine is a 4-stroke turbocharged engine specially developed for
recreational aircraft. It also exists in a certified version as the
Rotax 914 F, that received its first cert in 1996.
Additonal features include:
- 4 horizontally opposed cylinders, "boxer" configuration
- Free air cooled cylinders, liquid cooled cylinder heads with
integrated pump and expansion tank
- Dry sump forced lubrication with integrated pump and separate
oil tank
- 8 valves, automatic adjustment by hydraulic valve tappet
- Dual Capacitor Discharge Ignition (DCDI) with RFI noise
suppression
- Garrett turbocharger with automatic waste gate control
- Two Bing Constant Depression (CD) carburetors
- Two electric fuel pumps
- Integrated electric starter
- Integrated reduction gearbox, ratio of 2.43:1 with optional
slipper clutch
- Various liquid and oil radiators available
- Many option available such as: Vacuum pump, external
alternator, hydraulic propeller governor
- Operates on automotive fuel with a minimum octane rating of 91
(Canadian standards)
- Time Between Overhauls (TBO): 1200 hours*
The R-914 produces 115 hp at 5,800 rpm (with a 5 minute
time limit) and 100hp Max continuous. Among the aircraft that
utilize the Rotax 914 to best effect, the list includes birds like
the General Atomics RQ-1 Predator, Titan T-51 Mustang, Magni
Autogyro, Stemme motor glider, Diamond Hk36 Super Dimona, the
Europa XS and the Heli-Sport CH7 Kompress helicopter.
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