Al Gietzen wrote:

FLOW MEASUREMENTS

After re-calibration of the flow meters we got good data for oil, and
coolant flow with and without thermostat.  No data is available for the
pressure drop in the dyno cooling loop, but my guess is that it is lower
than will be experienced in the airplane.  Although the run is longer,
the pipe sizes are 1 ½" and 2", and the radiator is large.

The oil cooling loop is likely more typical of pressure drops in the
plane, with AN10 lines and an oil/water heat exchanger.  The oil
pressure to the gallery was about 100 psig.

All I know about the coolant pump is that it is on a 12A front cover and
a new pump with aluminum housing.

Al

The front cover is independent of the water pump Al. Can you take
a picture of the pump itself. Perhaps I can narrow it down to year or type.

Thanks for the flow data. Interesting about the thermostat. Good argument
for not running one. Faster water.. more turbulence... better heat transfer.

Paul Lamar
 
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