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Fran's alternative build
His model is based upon a Griffon 2000TD with it's lower cabin, see the full
size photos on this site.
The cabin is a one piece unit that clips aginst a tongue at the front
and two dowel pins at the rear, mounted on the rear thrust base plate. To remove
the unit is just eased forward and lifted off.
This model weighs approx 8lbs all up with batteries etc, and rides over the
hump with ease then getting up to quite a speed. It is so light on the water
that it is difficult to steer a straight line so a model helicopter heading
gyro is used on the rudders to tame the steering. The model will travel in a
straight line and hold the line against a wind.
The completed model
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Radio installation
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Lift and thrust duct units
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Cabin shown removed for access
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Front end of rear cover- this is part of the rear
thrust unit which is a slide fit from the rear.
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inside rear of cabin
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Inside front of cabin- construction is 1/64 ply on
balsa frame.
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Completed cabin - less window glazing
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Base unit less radio and motors etc.
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Underside view of base unit
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Rear end of thrust unit showing rudders.
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Underside of thrust unit
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Various fans etc used during trials
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Underside view of lift duct with fan installed
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Skirt retaining clips
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Construction of rear duct
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