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My RV-8 Build Log
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Date:  8-10-2019
Number of Hours:  2.00
Manual Reference:  
Brief Description:  Brake Pad Break In, Magnetometer Calibration

Weather was ok for taxing. Engine started with no issues. The doc for the brake pads says to taxi 1500 feet at 1700 rpm at 20 mph to warm and break in the pads. Not sure how this was going to go, but it turned out quite easy to do. I taxied to the compass rose applying enough pressure on the brakes to keep the speed down. Stopped and let the brakes cool for a few minutes. Them applied the brakes, and increased the rpm to 1700, plane held in place with no issues.

Ok, all good here. Next I performed the GMU22 Magnetometer calibration, at the compass rose positioned the aircraft heading 360. Start the test and slowly turn right until the G3X says stop, repeat 11 more times turning right each time. Passed!

Since that went well, decided to perform the ADHAR vibration test (full power run up). Feet on brakes, stick full aft, slowly increasing power while the test is running. About 2200 rpm the tail starts flying .. I should have realized this potential, back off the power to set the tail on the ground!

Baby steps- taxied back to the hanger. On the way back I realized I set the alerts for manifold pressure and oil temperature way too low... I'll need to go into the G3X in config mode to reset these values.

De-cowled the plane to inspect the engine for leaks, etc. I found the fuel hose to the fuel servo almost touching the exhaust shield on the left side exhaust. It did not start out this way, but it seems to be moving to a happy place on the exhaust. Can't have this, measure for a new hose which I intend to route inboard of the exhaust instead of outboard from Tom and TS Flightlines, 17 inches total with a 45 degree fitting for the fuel pump (12 O'clock), and a 90 degree fitting at the fuel servo (3 O'clock).
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Got to reset some alert values

Got to reset some alert values

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Measuring for a new fuel pump to servo hose

Measuring for a new fuel pump to servo hose

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