Thomas;
The oil cooler for filter mount units are
hard to come by; I think the last one I found was used on a VW years ago. But
in any case they are not very interesting for us unless you’re just
trying to add maybe 10-15% to your cooling capacity.
I don’t know what’s
available in oil coolers in radiators, but for the rotary we’d ideally like
to keep the oil temp a bit lower, like maybe 160-175F – helps keep the
rotor face temp down a bit.
Happy Holidays,
Al G
-----Original Message-----
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Thomas Mann
Sent: Friday, December 18, 2009
8:03 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Radiator/Oil
Cooler Combo
I
was watching a video that was created by Tim England regarding his 4.3 V6
install in a velocity.
In
his install he was running some sort of oil cooler that was a combination oil
filter mount with a heat exchanger working off of the coolant from the radiator
(or something to that effect.) His argument for this approach centered around
his belief that under extremely cold temps at altitude, an oil cooler that is
inside the radiator may make the oil too cold to run at peak efficiency. i.e.
keeping the oil at around 195F was a better option under all temperature
conditions.
So
now I have these questions:
Does this
philosophy translate to Rotary powered aircraft?
Is
the oil cooler/radiator a good solution?
If
it is, do I need to use a different inch^3 figure per HP to derive the correct
radiator size?
If
the 195F oil solution seems viable, does anyone know of an oil filter mount
that includes a heat exchanger?
T
Mann