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Initially I decided to try and find a
way of mounting the motor as per model on the left and
somehow reverse the rotor blade to give the same effect
as a right hand mounting.
I trimmed off the tail boom housing from
a Hummingbird tail rotor gearbox leaving only the axle
and motor mount. Using a Dremel I trimmed off a portion
of the models tail rotor gearbox until I could fit the
trimmed Hummingbird gearbox in place. I then marked
the outline of the tail rotor motor and cut this out
until the motor and gearbox combination fitted correctly
roughly on the axe line of the Mi-24V.
I used a product called Quicksteel to
fix the gearbox in place, both filling the void inside
the models tail rotor and leaving sufficient outside
to file to shape.
I cut the centre section out of an old
rotor (got plenty x-crash lying around!) and glued this
in place to the face of another rotor, In effect I mounted
the tail rotor on 'back to front' so with the motor
spinning in the opposite direction to its original configuration
and the blade facing the opposite way the net result
is the same. I was able to test this on the Hummingbird
by flipping over the tail motor housing and it appeared
to work fine.
However during initial flight testing
of the model this configuration didn't appear to work.
This may have been due to other factors such as insufficient
power from the tail motor, the baffling effect of the
models tail, or possibly the combined Gyro/Mixer unit
from the new Hummingbird not being able to cope with
the different dynamics of this set up, quite simply
the tail spun around like a top no matter what I did.
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