The Light Weight Engine Houtekietstraat 11
B-8540 Deerlijk, Belgium
EFFECTIVITY
page 46
ALL
19-3-2019
As our engines are not operated by a carburetor, the display can be changed at customers
demand. Basic idea is that the pilot has an overvieuw of all 4 or 6 cylinders, and can take
action before the engine overheats.
The Water and Oil temperature is important !
D-Motor is cooling both cylinder head and cylinders. The red line for cylinder head
temperature is the max. water temperature ! As D-Motor cools both head and cylinder body,
it is obvious that the temperature difference between IN and OUT should not exceed 10°C.
Permanent monitoring of coolant temperature is necessary.
Water and Oil in your engine :
Water can get into the oil two ways. You generally don't have to worry about one of the ways
if you fly your aircraft enough to burn off the water during normal flying. This drives off the
moisture that simply comes from your engine breathing when it is not being used (cold air
enters a hot engine and water condenses) and from combustion byproducts. The second
more destructive route is through a coolant leak due to a bad gasket, an engine crack, etc.
The above facts usually are due to bad cooling engineering !!
This amount of moisture is generally going to cause serious engine issues including loss of
power, oil sludging, etc.
Consult D-Motor when in doubt
.
Pilot Instructions water temperature :
