Wednesday, September 13, 2006

Slow progress this week due to outside issues including a weekend drive to Eugene.

The bottom of of the left outboard flaperon is riveted. The top was drilled using the new electric drill. The new drill has a very different feel in it's operation. The drill spools up, sits on the metal for a second and then instantly sinks into the metal. The time to spool down the drill takes much longer than the air drill. I haven't deburred yet, so I will not know how using a high RPM / low torque drill will vary in respect to the high torque . lower RPM air drill. My guess is that the holes will be cleaner.

Another building tip about the flaperons: The trailing edges are pre-drilled. The builder's manual says that the top edge of the flaperon may not reach the trailing edge, and just to trim the extra off. The problem is that the pre-drilled holes prevent this and trimming would ruin the skin!

So besides exercising extreme caution in the measuring of the ribs to make the bottom skin match up, I found an interesting technique to make the top skin "work".

After ratcheting down the skin with 2x2's, I slowly used some silver clecos in the trailing edge to "pull" the pre-drilled holes together. Initially it was hard to find holes close enough to start the process and it took another person to help pull and push the skin.

Project Status:
Flaperons: ( right outboard DONE! ) 10.5 hours spent ( 1h, 1.5h, 3h, 6h )
Paint Design: 2 hours spent ( 1h, 1h )
Elevator DONE!: ~31.5 hours spent ( 3h, 1.5h, 3h, .5h, 3.5h, 2h, 4h, 1.5h, 2h, 4.5h, 1h, 6h )
Horizontal Stabilizer DONE!: ~28 hours spent, 3 pieces replaced ( 3h, 2h, 2h, 2h, .5h, 1.5h, 3.5h, 1.5h, 5, 4.5, 2h, .5h )
Rudder DONE!, minus horn : ~16 hours spent, ( ~8h, ~8h )
Total Done: ~90 hours

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