Thank you all very much for the additional input for further reflections.
I am still not 100 pct certain what to do - or how to do it - but I have a
100 pct better basis on which to make a conclusion.
If I were to build the airplane again, I would have studied the Finnish
water/oil heat exchanger solution with great interest. The Rotax dealer in
Sweden sells such heat exchangers, I note.
Our friends in Finland a raised the issue of pre-heating before start in
cold weather. I use the hair dryer-method, with a 1800 w dryer blowing into
the special cooling duct for the 912S. On extra cold days another smaller
dryer blows into the right side cowl opening for extra pre-heating of the
oil tank. When my pre-flight inspection is done and I otherwise have
everything planned and ready for the flight, the engine starts with just a
brief application of choke. Between flights I have a 200 w heater under the
cowl outlet behind the coolers and 2 x 60w light bulbs inside the cockpit,
all with the hope of keeping the worst of the moist winter air out of the
engine compartment and behind the panel.
Best regards,
Svein
LN-SKJ
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