Aero Cors-Air USA LLC is proud to introduce a new and more powerful version of the Cors-Air engine line, The Black Bull.
                                     This engine was designed for those pilots who want even more power, shorter take-off runs and a very high climb rates.
                                  The Cors-Air Black Bull can be used for foot launch PPG, PPG Trikes, Delta Trikes, ultralight airplanes and UAV (DRONES)
            This new powerplant is still light compared to other brands  its class,  it is sturdy, reliable and user friendly, just as the rest of the Cors-Air Motors engines.
                            After many tests on the bench and in the air where flown by well known PPG pilots and , in the harshest and most "unfriendly" environments,
                       changes and improvements performed on  the prototypes the  final version of the Cors-Air Black Bull prototype passed all tests with flying colors.
The first engines left the factory in Italy by the end of November 2015 and ever since, we did not hear from a single pilot who regretted buying this mighty powerplant!
            The Black Bull is the most powerful engine in our "fleet" which consists of Cors-Air M19/Black Magic, Black Devil LIGHT and Black Devil LIGHT/SPORT.



                                            


                                        

For more pictures, click here or on the photos above.



Cors-Air "Black Bull" engine specifications:

CYCLE: TWO STROKE

TOTAL DISPLACEMENT:   235 C.C.

BORE:   70mm

STROKE:   61mm

COMPRESSION RATIO:   10.5:1

COOLING:   air cooled  and with optional cooling shroud

Maximum RPM:   8000 RPM

PISTON:   Two aviation rated chrome plated and beveled rings

Cylinder HEAD:  CAST AND MACHINED Aluminum alloy with high silicone percentage

Combustion chamber with improved squish

CRANKCASE:  CAST IN G-AL SI 9 UNI 3051 ALLOY SUBSEQUENTLY TREATED AND ANODIZED AGAINST SEA SALT

CONNECTING ROD:   COPPER PLATED STEEL 18 NI CR MO5 CONNECTED TO THE DRIVE

CRANKSHAFT: :WITH VERY PRECISE HIGH SPEED SILVER-PLATED ROLLER BEARINGS

CARBURETION:   DIAPHRAGM OR EFI (ELECTRONIC FUEL INJECTION)

CRANKCASE FUEL DELIVERY:   SIX BLADE REED-VALVE SYSTEM CONNECTED TO THE CRANKCASE

IGNITION:   ELECTRONIC  CDI (ELECTRIC VERSION) WITH DOUBLE SPARK PER STROKE FOR SAFETY AND CLEAN BURN

IN-FLIGHT BATTERY CHARGING SYSTEM not available yet

SPARK PLUG: NGK BR10ES OR SIMILAR

SYSTEM:   SIX PORT DISTRIBUTION / CYLINDER TRANSFER AND EXHAUST WITH BOOSTER (TUNED EXHAUST)

CYLINDER:   ALUMINUM ALLOY WITH SPECIAL "NICASIL" COATING

REDUCTION:   WITH POLY V BELT AVAILABLE  IN 1:3.0 1:2,88

CYLINDER HEAD TEMPERATURE:   MAX TEMPERATURE 230C  \  446F MEASURED UNDER SPARK PLUG

EXHAUST: TUNED WITH 3 (THREE) THREE FLEXIBLE CONNECTIONS TO BETTER DISSIPATE VIBRATIONS

EXHAUST GAS TEMPERATURE:   NOT EXCEEDING 590 C \ 1094F

ENGINE MOUNTING:  BY 5 SHOCK ABSORBING RUBBER MOUNTS (VIBRATION INSULATORS) (#5 mount) should  support from under the engine

CRANKSHAFT ROTATION:  COUNTERCLOCKWISE

CRANKSHAFT CONSTRUCTION: 18 NI CR MO5 ALLOY  WITH 5 THERMO TREATMENTS ON EVERY COMPONENT

ROLLER BEARINGS:   DESIGNED FOR HIGH RPM, CLASS C3

CRANKCASE OIL SEALS:  DOUBLE  LIP, MADE OF "VITON" WITH VERY HIGH RESISTANCE AND LONG LIFE

FUEL / OIL RATIO: MIXTURE 3% - 3,5% WITH SYNTHETIC OIL; SUGGESTED BRANDS: MALOSSI7.1WLADOIL K2T
                                          ELF 2T MOTO, CASTROL TTS, HONDA  HP2 FULLY SYNTHETIC RACING OIL

ENGINE WEIGHT:  HAND START KG 12,55 + KG 3,80 FOR THE EXHAUST
                                         ELECTRIC START KG 13,40 + KG3,8 0 FOR THE EXHAUST


Engine schematics and dimensions in millimeters:



Adobe Acrobat Document

Simplified measurements in inch:

Engine Depth: 9 inch /distance between all 4(four) engine mounts (vibration insulators): 6,5 inch


Engine introductory prices ended July 30 2015 :


Black Bull Electric start:   USD 3,4750.00  plus shipping (cooling shroud optional) no battery charging



Black Bull manual start engine:   USD 3,340.00 plus shipping  (cooling shroud optional)

Black Bull Hybrid engine (hand start and electric start)  USD 3,520.00 plus shipping
 The electric start or hybrid Black Bull does not charge the battery in flight
We recommend buying the Hybrid engine (with el. start and hand start) and using a 12 Volt  Sealed Lead Acid battery
of 3,5 Ah capacity, one can get from 20- to 25 cold starts which is plenty for a flying session

NOTE: If five (5) or more engines are purchased in the same time, dealer's prices can be applied


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