Transmittor locks in up position! Ouch!!!
I have a HiTec Focus 3 AM. Has its share of hours on it.
I went sloping in crazy conditions yesterday, did a wiggle up and down and left and right, all OK and launch.
Aeroplane flies for 2 seconds, and loops overhead, behind the bluff and into the trees!
The stick jammed in the near full up position.
i disassembled in back of wagon (needed to borrow a broom to get undamaged zag out of tree after climbing to top)
it ends up the up down gimbel points are pins that are not held in place anyway i can see!!!!
1 slid out and jammed, and i mean jammed the works up but good.
I pushed pins back in place, took a paperclip and melted some bias holes (heated with bic lighter) and filled with 4 minute JB weld.
OK did a test, paying especial attention to up and down and relaunched. 2 seconds and BAM. For the life of me I do not know how the reverse switch got moved, but the ailerons were reversed.
third launch worked fine, except for sandstorms (30 plus winds sends sand up and over) happening now and again.
Humble pie, lose your elevator!
I have a few more Focus 3s, and think they will need a looking at.
I have had the same problem with my Focus 3 am. Left it in the car for a few days -- very warm/hot outside--and the next day "frozen" in the up position. I did not discover until at my slope site. I pulled on the stick down very very hard (I know, very risky move) and it "broke free". Believe it or not, this transmitter still works, and I have not had any problems since.
I think that HiTec made these units with a tight fit to hold pins in place.
I think bright sun or heat can expand plastic and allow pins to slip out.
Design needs rethinking.
Well worth it to hold in position better. I melted a few small bias holes with paperclip heated with bic lighter and 4 minute JB welded in place.
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