flustercluck
Veteran
Location: Newnan Ga (Just S. of ATL)
My Posts This: Topic Forum | Fellas, help please:
This afternoon I was on the first tank on my 700. Two min into the flt, I'm coming down from maybe 75 ft, tail-in, at maybe a 30-deg angle. My intent was to come down to 10 ft off the deck and bring the tail straight up for a nice nose-over flip. But crappo, as I'm about 50-ft away I notice the elevator cyclic on the DX7 has no input!!!
I mean, I'm jamming the elevator stick full forwards and backwards, no response, and the d*mn thing is still coming in backwards at an angle- I couldn't stop the backward flt and I'm wondering, WTF is this???!?!?
Only thing I could do was hit TH hold and just hang on for the ride down... and it wasn't pretty since she came down on a slight slope and at that angle. DAMMIT I hate mechanicals and I got NO IDEA why I lost elevator. Any ideas?? Was it servo failure? Did the DX7 go squirrely?? There was no glitching, that's for sure, and no loss of signal.
What's doubly weird was that to try & check the tx, I switched models to my 600, turned on the rx, and it wouldn't initialize!!!??? I sat there at the field and did this 5 or more times: turn on tx, turn on rx, and the servos would buzz (but not move) but there was NO servo response to stick input. Finally, after about the 6th time, the 600 initialized and everything seemed to be ok (there was only one other pilot at the field, and his stuff was off). But no way I was going to attempt a flt.
I use 9452's on the 700's swash, and the sole plastic gear in the elevator servo stripped- I presume on impact. But here's the kicker: when I was taking the horn wheel off to get the servo out, I noticed that the wheel bolt was kinda loose. Then, looking at where the splines at the center of the wheel mate up with the servo drive spline, I see black plastic bits...looks to me like maybe the servo wheel is stripped?
Now here's the question: could the wheel have stripped in flt, causing ELE loss??? To be sure, I really jam the ELE a lot both front & back for quick flips, etc.... so it's working hard. Or was the wheel stripped somehow on impact?? I'm sure the impact stripped the internal servo gear.
As it turns out I had a spare 9452 gear that I put in, and the servo seems fine. BUT... I'm half scared to fly the 600, now, since 1) it took +5 times to initialize and 2) I'm still not positive what caused the elevator loss in the 700.
Is my DX7 ok? You guys ever had this or something similar happen?
The 700's is benched til I get some parts, but I'd like to fly the 600 in the meantime... I just don't know whether I should or not???
Help!! |
