Yesterday I was talking with a specialist of the German Rotax dealer
Franz about their oil and coolant thermostats. Their experience with
Rotax 912 engines operated in the nothern parts of Europe: It often
lasts a long time until the oil temperature is at a level permitting the
application of full take-off power, and a lot of engines are operated at
oil temperature levels permanently too low - with all the bad side
effects. He highly recommends the oil thermostat. Only if the coolant
temperatures - despite an installed oil thermostat - are always too low,
a coolant thermostat is recommended. Their oil thermostat is built and
installed in a way that it stays open (or opens up) if it is defective,
which means the oil is going "the long way" through the radiator.
Another detail he mentioned: If you buy a new 912S, ALWAYS buy the heavy
duty starter, the price difference is small compared to the hassle you
will probably avoid.
Alfred
Alfred Buess
Laenggasse 81, CH-3052 Zollikofen, Switzerland
Tel.: +41 (0)31 911 63 32, Fax: +41 (0)31 911 56 32
E-Mail: ykibuess@bluewin.ch
Europa XS #097, Monowheel, Foam shortwing, Rotax 912S, Airmaster 332 CS
-----Ursprngliche Nachricht-----
Von: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] Im Auftrag von Pete
Lawless
Gesendet: Donnerstag, 21. April 2005 23:09
An: europa-list@matronics.com
Betreff: RE: Europa-List: Two points
Hi Nigel
The thing with a lazy thermostat is you know it is not working properly
well before it becomes a real problem.
The other down side for us old chaps with bad memory is remembering to
adjust the flap that controls the oil temperature! It is something else
to remember, I know eventually it would be left on when it should be off
or vis versa. It is a bit like carb heat controls that we all know have
to be operated but aeroplanes loose engine power regularly because of
carb icing. The thermostat just gets on with it and does not require me
to do anything. I totally agree with you about mod approval, but I
still know which I would prefer.
There are aeroplanes (not Europas as far as I know) out there with both
oil and water thermostats which are, I believe, approved mods.
Regards
Pete
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