Operations Manual
HKS 700E
10
3.7. Cooling system
Free air-cooling.
For the engines with full-cowled engine installation, ducting is required to
properly channel cooling air to the cylinders.
3.8. Cylinder head temperature
Max. permissible cylinder head temperature
(Measured on the hottest cylinder): 170 Deg. C (338 Deg. F)
CAUTION!
z Use the bayonet style CHT probe.
3.9. Propeller drive-reduction gear
Reduction ratio: crankshaft to prop shaft=2.58:1 or 3.47:1
Torsional shock absorption is based on progressive cushioning from an axial
spring-loaded hub with dogs.
3.9.1. Propeller mass moment of inertia
Max. permissible propeller mass moment of inertia
2.58:1 3000 kg cm^2
3.47:1 6000 kg cm^2
3.10. Exhaust gas temperature
Max. permissible exhaust gas temperature changes according to the location
of the EGT sending unit.
Distance from Exhaust flange [mm] Max. EGT [Deg. C] (Deg. F)
20 760 (1400)
35 750 (1382)
50 740 (1364)
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