C42 Owner’s Manual (Microlight) Page 28
Propellers
The following propeller types are approved for use:
With the 80 hp Rotax:
Warp Drive CS68 composite 2 blade 68” diameter propeller.
Warp Drive CS68 composite 3 blade 68’’ diameter propeller.
Arplast Ecoprop 170R 110/3, 3 Blade 170cm diameter composite propeller.
Neuform CR3 3 blade (1,75 m Ø)
Kiev Prop 263/1700 3 blade composite propeller with a 1.70m diameter.
With the 100 hp Rotax:
Warp Drive CS68 composite 3 blade 68” diameter propeller.
Arplast Ecoprop 170R 3 blade propeller with a diameter of 170 cms (67”)
GSC Tech-III 3 Blade 68” diameter wooden propeller.
Neuform CR3 3 blade (1,75 m Ø)
Neuform CR3-V-R2H 180cm diameter variable pitch propeller.
Kiev Prop 283/1800 3 blade composite propeller with a 1.80m diameter.
All approved types, except the Neuform Variable Pitch Propeller, have blades with ground-
adjustable pitch and are set to the pitch angles given in Section 1. This pitch angle is prescribed
at a specific radius from the point at which the blade exits from the hub.
The propellers have aluminium alloy hubs machined to close tolerances. This permits secure
clamping of the blade roots under the high centrifugal forces experienced by the blades in
service. Proper blade root securing bolt tension is essential to maintain this security.
Warp Drive and Arplast propellers blades are moulded in composite material, either carbon or
glass fibre in epoxy resin. Blades of this type carry all of their strength and rigidity in the external
skin, which is carbon or glass fibre braid or fabric. See Section 11.
Exhaust system
The engine is fitted with a Hagerman Exhaust and Silencer System. This system is built largely from
stainless steel components.
Fuel Capacity
The C42 has either a 50 litre or 65 litre fuel tank as standard. Both fuel tanks are inter-connectable
so fitting an additional tank doubles the capacity to 100 litres or 130 litres. This capacity is
placarded next to the filler cap.
10.3 Control Systems
Pitch
A central control stick, accessible by both occupants, is located over the fuselage between the
seats. Fore and aft movement of this stick is transferred, via longitudinal push tubes, to a motion
reversal lever installed midway between the cockpit and tail. This installation also
accommodates the pitch stops. A second push tube, of similar length, runs from this lever to the
elevator horn. A rearward movement of the stick lifts the elevator; forward movement depresses
it.
Each push rod terminates in a spherical bearing (Rose joint) maintaining loads through the
centres of the tubes. The threaded roots of these fittings can be susceptible to failure if bending
loads are applied; it is important to ensure complete freedom of the joints at extremes of their
movements, such that bending loads cannot be applied.
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