Elevator Trim over-ride
Posted: Sat Feb 18, 2012 2:45 pm
Has anyone with a flying Super Rebel / Moose ever ran the elevator trim
servo to it's limits in flight to see how hard it would be to over-ride a
runaway or broken trim servo? A conversation with Scott at Ray Allen got me
thinkin'. He wants me to trade in my MAC-8A servo for the newer, and
supposedly better constructed T3-12A servo. He also thinks that my plan to
use a T2-7A servo to move the aileron pivot block on the roof for aileron
droop is ambitious. He's afraid that the servo will be working too hard to
overcome aerodynamic forces on the block and will fail. Any opinions on the
aerodynamic forces acting on the block? Operationally, I will most likely
be in level flight whenever I am making changes to the droop. I.e., I'll be
deciding and setting the droop based on conditions while on downwind. That
also made me think about the fact that I have separated the aileron droop
function from the flaps. There has been some concern that it will be a
muscle man pull on the flap lever with my roof mounted system. At least I
have removed any force on the block that the ailerons might induce. Food
for thought.
Mike
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servo to it's limits in flight to see how hard it would be to over-ride a
runaway or broken trim servo? A conversation with Scott at Ray Allen got me
thinkin'. He wants me to trade in my MAC-8A servo for the newer, and
supposedly better constructed T3-12A servo. He also thinks that my plan to
use a T2-7A servo to move the aileron pivot block on the roof for aileron
droop is ambitious. He's afraid that the servo will be working too hard to
overcome aerodynamic forces on the block and will fail. Any opinions on the
aerodynamic forces acting on the block? Operationally, I will most likely
be in level flight whenever I am making changes to the droop. I.e., I'll be
deciding and setting the droop based on conditions while on downwind. That
also made me think about the fact that I have separated the aileron droop
function from the flaps. There has been some concern that it will be a
muscle man pull on the flap lever with my roof mounted system. At least I
have removed any force on the block that the ailerons might induce. Food
for thought.
Mike
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