Hi! Richard.
I appreciated the error of my statement as soon as I pressed the send
key.
My point was that in air cooled engines the oil isn't the primary
cooling medium. In the Jabiru case the sump has cooling fins BUT when
over filled the thing overheats, half fill it and it stays cool!
Thus in the established cruise there is no need for an oil cooler
whatever. But when major power is required during which I accept the oil
is obviously taking heat to the cooler as is the sump a heat sink on a
conventional engine without an oil cooler but the primary cooling is by
water circulation.
Regards
Bob Harrison G-PTAG Europa MKI/Jabiru 3300
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Richard
Holder
Sent: 25 January 2006 08:44
Subject: Europa-List: Oil Thermostat
R.C.Harrison wrote:
> But to look at the logic I'm not aware of oil
> circulation being used to cool an engine so in most
> applications ...
This, Bob, is complete rubbish. IMNSHO.
All engines with no water cooling always have an oil
cooler. Why - to cool the oil ! And why does it need to be
cooled ? Because it gets hot. And why does it get hot ?
Because it is taking heat out of the engine !
The cooling air can only reach the outside of the engine.
I hope your statement was a typo !
Richard
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