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.
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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