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21 Feb 2009
1.0 air time
1.1 flt time

Inter-flight activities:

  1. Weather striping was added at the canopy bow, to attempt to seal air leaks.
  2. Unusable and usable fuel measurements for left tank. Tank had been run dry on the last flight. 0.2 lb (0.03 USG) of unusable fuel was drained from the tank. With the tank empty, 21.50 USG were later required to fill the tank, so the usable fuel for the left tank is 21.47 USG.
  3. Modified the data recording script to record both AUX2 and AUX3 from the EIS4000, in the hope that one of the them was the fuel pressure. But, neither value seems to match the displayed fuel pressure readings. More investigation is required. Need to dig into the EIS4000 wiring diagram, which unfortunately is at the hangar.
  4. Conducted new weight and balance. Weighed two configs, wheel pants OFF but gear leg fairings ON, and with gear leg fairings and wheel pants ON.
Gear leg fairingsONON
wheel pantsOFFON
Right wheel545548
Left wheel558561
Tail wheel5555
Total weight (lb)11581164
Arm (in)77.6277.58

This new weight is about 10 lb lighter than I expected. I'm sure the aircraft was in the correct configuration, as I inspected to confirm the ELT, fire extinguisher and first aid kit were installed. All seat cushions were installed. I installed the cockpit sidewall insulation. I confirmed the oil level was at 8 qts. I zeroed the scales, with the chocks already on them. I can only come to two conclusions - either the scales have a large sensitivity to temperature, or there was some extra weight hiding in the aircraft the first time. I'm baffled. I may weigh the aircraft again to try to resolve the questions.

Events:

  1. Engine break-in
  2. Two slow leaning events at 2400 rpm, 23.3" HG MP, 5500 ft (75% power). All cylinders reached peak EGT within about 0.2 to 0.4 USG/hr of each other. This wasn't quite as good as with the two leaning tests on the previous flight, which were conducted at full throttle. Perhaps the air distribution is better at full throttle than it is at partial throttle.
  3. Transponder check with Ottawa Terminal. Ottawa Terminal was contacted on 127.7, with the aircraft at 3500 ft overhead the town of Smiths Falls. Terminal did not see the transponder return until it was cycled OFF - ALT. Then they reported seeing the return, and provided a barometric altitude of 3400 ft. But, no "R" indications were seen on the GTX-327 display.

Snags:

  1. RPM still low in level flight with max rpm selected. I'll try increasing the oil pressure before the next flight, to see if that makes any difference.
  2. EFIS does not power up. It is in a continual reboot cycle at about 1 Hz. Thus no EFIS data is recorded.
  3. Minor air leaks at left side of canopy bow, just above bottom. Much better than on the last flight. Try adding some more stick-on foam there.
  4. Data system is not recording fuel pressure.
  5. Oil pressure a bit low. Around 70 psi in cruise once the oil is up to temperature.

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