David;
Sounds like you could close off the
scoop a bit and eliminate some drag. What weight oil are you using? I
think operating oil temps of about 140 and above are fine. The occasional
200F will help evaporate any moisture that is in there, but even prolonged 140F
will do it. Oil temps around 160 is good, gives good engine power.
Lynn has more info on this than I.
Al
-----Original Message-----
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of David Leonard
Sent: Tuesday, September 11, 2007
5:13 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] How cool is
too cool?
I have have about 5 hours on the plane since the
latest updates and I find that even using moderate levels of boost in climb,
Coolant temps peak at 80C (176F) in a prolonged climb and cool to 60-70C
(140-160F) in cruise even at 180KTAS. Oil runs only slightly warmer in
prolonged steep climb as high as 94C(200F) but it also quickly cools to the
60-70C range in cruise.
Besides unnecessary drag, is there any problem with with continuous temps that
low? Someone wrote that oil temps in particular should not be that low
and will tend to cause sludge. My oil temps have always been that low,
and I wonder if that may have contributed to my stuck side seals x2. I
use mobile-1.
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net