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Date:  7-26-2020
Number of Hours:  1.00
Manual Reference:  
Brief Description:  Flight test update

It has been a long time since my last post here. I would like to bring this log, both up to date and close out the build phase with the final details.
The gage wiring problems turned out to be reversed wire on all of the cylinder temp probes. I had simply assumed red positive/yellow negative. A simple search on the internet set me straight for K type thermocouples. A costlier issue was the fuel sender and oil senders. I had hooked them up to a 10V excitation voltage when they were rated for 5V. Both had to be replaced at about $200. Once again the internet resolved the mistake.¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬ Last but not least, I found out my aftermarket sub-D connector in the wing root (for the roll servo and CAN termination) was not fully seating when plugged in. I found that issue during the phase 1 flights when the G3X CAN went down and everything on the screen want red X for about 20-30 seconds while the system found the secondary communications/back up data sources.

First flight was Jan 16, 2020 and other than very exciting, was fantastic. Full throttle, lift off, wiggle of the stick to confirm positive control, then up to 3000 ft to orbit above the field. Everything went red X after the 3rd orbit when the CAN went down, then mostly came back. I still had radio altitude and airspeed, so no issue returning to the runway. Wiggling things brought back the CAN. I didn’t actually find the problem until a later issue at around 35 hrs, since reseating the connectors resolved the issue for the moment giving me a false sense of finding the real problem.

Phase 1 was completed February 22, 2020 with 40 hrs on the aircraft. I worked through the EAA flight test syllabus in well less than the 40 hrs required. The most fun was the stall series with high wing loading turning stalls. I also did a series of simulated engine failure on takeoff turn backs. That is also a lot of fun aggressive flying. It is surprising how aggressive you need to be, pushing over to maintain speed and unload the wings fo
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first flight today

first flight today

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