Thursday Nght: Disaster! The Skylark has had a serious accident, an accident called stupidity, old age… pilot error. Anyway yesterday dawned dead calm, clear and sunny, for the first time in ages it seems. At 7am I was way too tired to go outside. This time the clocks changing has really messed with me. At 8am it was brighter and still calm, so I grabbed the Skylark from the studio inside, grabbed the transmitter and went out to the strip.
I turned on the transmitter and wiggled the sticks and all controls moved, as I accelerated I was surprised at first how well it went through the thickening clover, but as it reached take off speed to lift off, the nose dug in and I aborted. I decided to do a hand launch instead and under full power the model went up to 50 feet. It takes a couple of seconds after a hand launch before your fingers get back to the sticks and you take control, but as I did something was horribly wrong, the model was uncontrolable, I shut the throtel and tried to turn back toward the strip but as I did the model went into a vertical dive straight into a pile of rocks… Not good.
The damage was severe, every former to the back of the wing was either destroyed or seriously broken, the fuselage side was split and punctured where the servo tray and wing seating plates had ripped out, the rudder servo was broken. The left hand front end of the nose was destroyed for 4 inches, prop destroyed, wheel disloged. The first 2 inches of rear fuselage top decking was also broken with a split in the side where the wing had ripped off.
The wing was damaged in three places, both right and left wing leading edges had at least 4inches of crush damage from individual rocks all the way through the leading edge, leading edge sheet and ribbs right to the main spar, the left wing was also completely broken off half way along where the aileron begins resulting in the aileron servo also being stripped.
The battery has some front end damage, (but is holding a charge), ESC and reciver seemed OK, the motor has a graze from a rock, (but the main shaft is OK and the motor runs true with a new prop) Prop was destroyed and the two servo’s mentioned. What a bloody mess! I didn’t feel like takng a photo of it, perhaps in hind sight I shoud have, but it looked broken
I glanced at the transitter and it dawned on me I hadn’t changed the model, it was set to Bixler, not Skylark, Dick head! I checked the controls, but I didn’t take notice as this setting caused the elevator to work in reverse. First clue was the nose digging in when I tried to lift off, so after the hand launch my turn back toward the strip would have included some “up elevator” and with the resulting dive I would have added more, except it was set to down…. So as i said old age, stupidity, breaking the number one pre flight check rule, at least it explains why. After that I certainly didn’t feel like flying anymore and spent the rest of the day (except 2 hours trip to town and luch) working to try to fix it.
I had to remove a lot of the covering and then cut out all the damged parts. Using cyno I fixed the splits in the fuselage. I rejoined the broken part of the wing with cyno, it went back together very well indeed and I would be sure of no loss of strength there. Next I set about cutting out the sections of broken leading edge and all the broken ribs, at least 5. I had to cut out large sections of the leading edge sheet too and I removed some interspar webbing that had split with the twist of the impact, but fortunatly there was only the one mentioed break in the main spars and the all improtant centre section was OK. the right wing still has 2/3 of it’s covering in place
Once everything was removed, it was time to start repairing what could be repaired and replacing the rest. It took all day yesterday and a couple of hours today, but I am pleased to say that I have now reconstructed the model completely. It has a new front end including engine former and nose leg former, the wing has been rebuilt and the new leading edge sheet fitted in very well.
It is back hanging on it’s curtain rail tonight ready to be re-covered. I am pleased with how well it has gone back together and once re covered will look none the worse for wear, in fact I also repaired the dent I put in the wing last week, so it will look new again. Stupid thing is that I do enjoy rebuilding them, it would have to be pretty bad for me not want to. It should be flyable again sometime tomorrow, although the wind is back and the forecast is for rain, so waiting game begins again I suspect.
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