REFLECTOR: Franklin Oil temp and flow data

Nate Jackson nate_jackson_pdx at msn.com
Sun Nov 10 20:37:19 CST 2013


Hi Brian,
 
My Franklin seems to behaving the same way... after 250 plus hours.
 
The spring thing doesn't appear to be working.
it's very common for my oil temp to settle down after 5-15 miuntes depending on the flight.
Nate
172RG Franklin
 
Date: Sun, 10 Nov 2013 20:19:08 -0600
From: michalk at awpi.com
To: reflector at tvbf.org
Subject: REFLECTOR: Franklin Oil temp and flow data


  

    
  
  
    Okay, I'm going to channel Larry Coen, and the Franklin threads that
    go *WAY* back.

    

    Today the stars aligned and I was able to measure oil flow through
    the oil coolers.

    

    

    

    Oil flow (blue) max is 3.5 GPM using a book calibration factor.

    RPM (green) is divided by 10.

    Pressures (red and orange) are in PSI

    Coolant temp (brown) is more like block temperature (uncalibrated). 
    I put a sensor in an oil plug hole.

    

    It was about 70F today, not that cold.  The oil flow is just very
    strange.  It didn't start flowing until nine minutes into the
    flight, and I don't think it's a sensor problem because the coolant
    temp leveled off after it started flowing.  If this data is correct,
    I'm not getting enough oil through my cooler.  The specs on the
    cooler are for 7gpm, and I'm barely half there.  Yes, I'm having
    high oil temp problems.

  


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