<<....The water temp was still too cold in the air. ..>>
By what measure? Rotax don't publish a lower limit. So long as oil is up to
temperature, low water temp should have no significance. The cylinders wil
l have a similar expansion coeff to the pistons, so 'cold seizing' should n
ot be a significant risk.
Duncan Mcf.
----Original Message----
From: jonsmitheuropa@tiscali.co.uk
Date: 29/12/2017 10:08
Subj: Europa-List: Engine Over-cooling
>
Lots has been covered over the years about insufficient cooling. My proble
m is the opposite - when airborne my cylinder head/ water temperatures are
far too low. Even in a long slow climb the temps never overheat and anyth
ing other than a climb the temps are too low. The oil temperature used t
o be too low also but a few years ago I fitted a Thermostasis oil thermosta
t. The oil temperature is now perfect all the time but it has had no effec
t on the cylinder head temp.
My question - does anyone have any pearls of wisdom on recommending (or oth
erwise) the fitting of a coolant thermostat? In accordance with the Rotax/
Conair Standard mod as on the LAA website.
In particular I was wondering if the fitting of such a thermostat might com
promise sufficient cooling (or reduce the usable time before overheating) o
n the ground? Although mine overcools in the air, on the ground the cooli
ng is only just sufficient! I=C3=A2=C2=C2=99ve learned to live with it
but on a hot day with a long slow taxi out I have to keep a close eye on t
hings.
Ps. I=C3=A2=C2=C2=99ve experimented many times with blanking the radiat
or with Ali tape. Helps a bit but not perfect nor an elegant solution. Y
esterday was a very cold day and I blanked over 1/2 of the radiator off. T
he water temp was still too cold in the air. In the summer, without the r
adiator blanked off it gets too cool in the air and with a bit blanked off
it gets too hot on the ground.....! Life=C3=A2=C2=C2=99s a compromise
I guess....!
Thanks in advance, Jon
--------
G-TERN
Classic Mono
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