On one early year
Mazda rotary installation, they had a similar arrangement. They had a
small heat exchanger that went between oil filter and the block. It
apparently did not prove satisfactory in that application and soon
disappeared.
If you use the Rx-7
Oil cooler, it has a thermostat which should keep the oil temp near optimum.
When the OAT cools the thermostat starts to open and diverts oil around the
cooler core thereby maintain its heat at/near some target
temperature.
Ed
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Thomas Mann
Sent: Friday, December 18, 2009 11:03
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
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