Most helpful critical review
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Hard to control
on 6 January 2014
This flew tolerably well but was hard to control in two respects. 1) Gradual increase in "throttle" was OK but when one tried to get a gradual reduction - e.g to get it down from the ceiling! - it shut down abruptly and crashed on the deck. Even experienced "pilots" had this problem. The other control, to make the craft revolve, was essential, as it revolved to the right unless the control was hard left! The flaps under the rotors may be intended to correct this, but were ineffective. Pity.