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Builder:
  Peter McBain
Location:
  Mount Gambier, SA - Australia
Aircraft:
  RV-9A
Total Build Hours:
  2260
Web Site:
  http://www.mykitlog.com/PeterMac/

Date:  12-27-2024
Number of Hours:  2.00
Short Description:  Fuel Flow Calibration Checks

I've been bothered by the high fuel flow readings witnessed during initial trial flights, so today I decided to run a calibration check. See picture below for my set-up.

With a fuel flow sensor K-factor of 68,000 pulses per gallon (as per FT-60 Red Cube spec sheet), I measured an actual fuel flow of 11.6L/hr when the EFIS displayed 15L/hr. Hmmm, there is my problem.

I started adjusting the K-factor to suit actual measured fuel flow and ran another test. I will continue with this tomorrow.




Testing fuel flow using the electric fuel pump and the fuel line run into a graduated measuring jug

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