Cooling Air Duct - Rotax 912 i Series Installation Manual

4.2) Cooling air ducts (optional)
Cooling air ducts are not required if the oil and coolant temperatures are
General note
within the prescribed operating limits. Otherwise following measurement
must be performed for the first installation of an aircraft type (not in serial
production).
See
Hot day condition
In contrast to the cylinder heads, the cylinders are ram air cooled. Plan
the cooling air ducts according to installation requirement.
Max. permitted cylinder wall temperature on hottest cylinder...200 °C
(392 °F)
NOTE:
Measuring point for Hot day condition
Graphic
Fig. 10
Effectivity: 912 i Series
Edition 1/Rev. 2
BRP-Powertrain
INSTALLATION MANUAL
Fig. 10.
Non-compliance can result in serious injuries or death!
WARNING WARNUNG
The cooling air ducts must be designed and built such
that the operating temperatures are within the speci-
fied limits and maximum values are not exceeded.
This must also apply to "Hot day condition".
If this temperature is exceeded, appropriate measures
(e.g. cooling air ducts, modifications to cowling, etc.) must
be taken to bring it within limits again.
75-00-00
Page 19
January 01/2014