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Old 10-29-2009 | 08:22 PM
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Campgems
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From: Arroyo Grande, CA
Default Two lessons learned today

Iaquired a well used U-Can-Do 60 from a club sale. Irebuilt a Saito 91 that I got in the same sale and installed it. The plane was kind of rough looking, but it looked airworthy. The cowl was crunched and cut beyond repair, and the landing gear mount had been broken out an patched with three or four oz of Epoxy. Ipulled all the servos, checked them and put them back. Re-did the throttle linkage. Took it to the field Monday and had an awful time getting the engine to run, but once it started, and was tuned, it was great. Istill had some bench trim to do on the controls, and I called it a day.

Back out today and finished checking that every thing looked right, a little sub tirm on the elevator halfs, a little on the ailerons, Ready to go.

Oneleason I learned today was that the hinges with the plastic center and CAcloth out side don't hold up well. Three of the four on an alieron pulled right out of the wing, One still had some of the ca cloth on it with a very small amount of wood, but it fell off as soon as Itouched it.

Lesson #1, Don't use CAhinges, especailly this type unless you pin both sides. Maybe this was really lesson #2

On take off, just as it lifted, it started a slow roll to the left. Nothing would stop it and it got all of about three feet up before rolling in, and busting the fuselage in half at the front of the wings. What went wrong. My buddy's first question, "Did you check the throws". OFcourse I did. Pick up pieces and take the mess home to prepair it for the trash man tomorrow. Just as I got home, I realized, Ihadn't done a range check, and it was a new receiver. Dumb, dumb dumb.

Prior to stripping parts, my post crash ritual is to hook every thing back up and see what works and what doesn't. Humm Everything worked, but I found that my inability to correct the roll left was because the ailerons were reversed. The harder I tried to roll right the harder it rolled left.

Lesson #1 prefilght a new/repaired plane like you would for the kid that showed up at the field for the first time with his plane that he built. No matter how long you've been flying. Check everything on the pre-flight check list CAREFULLY. I got complacent and screwed up. I was lucky, do damage other than a broken fuselage and a broken porp. The whole plane less engine and receiver cost me $25, and I still have the servos, wing, tail, landing gear, motor mounts, etc. And a red face

Don