Pilot Operating Handbook
H3 Sport 135 HP
SECTION 7
SYSTEMS
Dynali_POH_H3 Sport 135 HP Rev. 3.3 – Issue date 15.01.2021 Page
67
The four blades (120 g each) are composed of carbon, held by blade roots which are
not articulated. The blade roots are held in nylon bearings which rapidly develop play.
This play does not affect the performance as the nylon bearings are held by stop
bearings with flat rollers. In operation, the centrifugal force maintains the roots firmly in
place which press uniformly on the whole crown of the bearings.
Only the rollers of these bearings must be greased and all surplus grease is
immediately evacuated by the 1 kg of centrifugal force. The rollers dry and sometime
corrode rapidly but no intervention is required as long as the rudder pedals do not show
stiffness. All that has to be done then is to dismantle, clean with gasoline and grease
the corroded rollers without necessarily changing them.
The rear transmission gearbox (RTG) also has a pair of conic gears with spiral teeth
and splash lubrication. The entry and exit shafts are of stainless steel. It does not
present any problem of wear. A chip detector is also installed.
The left lateral bearing of the RTG, even if fitted with a sealing ring, may leak a little !
Regularly sponge the oil drop in the lip of this lateral bearing.
7.7
FLIGHT CONTROLS
Standard equipment includes dual controls. The cyclic on the passenger side can be
folded away. The regulation only allows dual control during training flights with
instructor.
All controls operate through control rods with ball joint endings. The flight controls of
the Dynali H3 Sport operate in the same manner as those of most other helicopters.
The cyclic and the collective control the pitch of each blade via the swash plate.
WARNING !
The controls are very sensitive, this being why we recommend frictions on the
three controls. Fully unscrew and re-screw 6 threads the lateral frictions and 11
threads the pitch friction.
Both collective are also of the classical type with a throttle twist grip. An electronic
controller, called “governor”, acts on the electronic butterfly in relation to the collective
position.
The governor acts as a « cruise control » and allows the pilot to avoid having to
constantly adjust the throttle to maintain engine and rotor RPM. The governor is a
standard equipment on the H3 Sport (embedded in the M150 if this ECU is installed).
Summary of Contents for H3 Sport 135 HP
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