Cozy III
Pilot’s Operating Handbook Page 10
rain erosion and has an efficiency close to the best metal
propellors, while offering a solution to the fatigue problem. For
good takeoff and climb performance, a propellor should turn in
excess of 2400 rpm on the ground (static), since horsepower is a
function of rpm. The higher the static rpm, however, the higher
will be the rpm at 75% power cruise (full throttle at 8,000 ft.). A
good "climb" prop will turn 100 to 200 rpm over the engine's
rated rpm at 75% power cruise. With light wood props, this
overspeed condition is not considered by most people to be
detrimental to the engine. Overspeed at maximum cruise can be
avoided by selecting a higher pitched "cruise" prop; however
takeoff and climb might be affected as much as 25%, and cruise
speed will not necessarily be any faster. Data on propellors of 4
different suppliers in a 125 hp Long EZ is shown below:
For lower horsepower engines, the pitch should be less. We
prefer a "climb" prop to get best takeoff performance, and like to
cruise at about rated rpm. At 75% power cruise, the "climb" prop
will overspeed, but be slightly faster than the "cruise" prop.
LANDING GEAR
The COZY features a tricycle landing gear with fixed mains and
a retractable nose wheel. The main landing gear is a one piece,
molded S-fiberglass/epoxy unit which gives exceptional energy
absorption for bounce-free landing. For minimum drag penalty
with fixed main gear, the gear strut is mo1ded into an airfoil
shape, eliminating the need for superficial fairings. The main
wheels are streamlined with wheel pants. The retractable
nosegear strut is also molded glass, and is mechanically
actuated by a simple crank in the front cockpit. The nose gear is
retracted in flight for optimum performance and also on the
ground to provide nose-down parking. This stable, self-chocking
parking position allows easy entry for a back seat passenger.
Nosegear position is displayed to the pilot through a plexiglass
window, through which he views the nose wheel directly.
The COZY is equipped with a buzzer gear-warning system which
To Next Page
Loading...