Sunday, May 22, 2022

Update 5/22/2022 Engine Run

 Completed canopy warning switch install and testing.

Secured cabin heat valve to closed position.

Installed rear seat backs, thigh supports, arm rests, center duct cover, belly brake actuator cover.

Ran engine to check idle setting, which was at about 1000 RPM.   Ran for about 15 minutes to warm the oil.  Cylinders stayed below 380.  #4 EGT was higher than the other cylinders but CGT's were very close.

The Air Fuel sensor shows around 10 when the VPX power circuit to it is off.  Goes to 13 when it is turned on and then goes to around 16 after a few seconds.  Since the probe has been replaced, seems the controller (14point7) may be bad.

After shut down, removed bottom cowl and set idle to approximately 690-720.  RPM fluctuated about 50 RPM when the Alternator Field was turned on/off.  Charging amps were around 20.

Ran both fuel pumps alternately, checked coils and had RPM drop when each coil was shut off.

Cowl screw near the sump pilot side will need some attention.  The fiberglass over pour foam is getting crushed so will need to be filled with flox.  Noticed the sump areas where pour foam was used seems to be shrinking.

Downloaded updated VFR charts but am getting a warning that the Dynon database is expired. 

Weather with either cross winds or low ceilings continues to be less than ideal for taxi testing or first flight.  

Found a "double bazooka" aviation antenna made out of coax that I'll try for the VOR and ILS antennas.  


https://www.westmountainradio.com/antenna_calculator_bazooka.php?frequency=333

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