§ Fan and Thrust Duct Installation
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Viper Jet MKII Composite
Thrust duct, fan shroud and EDF unit
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Prepare the EDF unit to receive the thrust duct
by bonding the shroud piece around the rear of
the EDF unit (the side without the notches). Use
thin CA adhesive sparingly for this task, avoid
getting any adhesive on any part of the fan or
rotor.
Bonding the fan shroud
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Test the thrust duct in the fan shroud, make any
adjustments necessary.
Test fit the thrust duct in fan shroud and EDF unit
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Insert the EDF unit in position through the fan
access hatch. You may have to feed it in motor
end first and then turn it in position to get it to
fit. Temporarily seat it in position with the wires
facing upwards but don’t attach it yet.
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Insert the thrust duct through the tail of the
airplane by folding it into a
U
shape as shown in
the image below. Fold the duct on the side
opposite the seam.
Thrust duct folded into a U shape for insertion
through the tail of the airplane
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Fit the thrust duct inside the fan shroud and
place the unit back in its final position. It is
important the EDF unit be pushed as far forward
