Fei Bao MiG-21 Fishbed Instruction Manual (Draft Rev 0)
Page 15 of 24
Inlet Duct Modification
While the model is equipped with full inlet ducting and a bypass, the builder may choose to
eliminate the inlet duct to simplify access to the internal components to facilitate any
maintenance. The split portion of the duct can be cut off approx 1” behind the forward former
for the nose gear unit.
Pneumatic Tubing Install - Retracts/Gear Doors/Speed Brakes
While this model is 98" long, the fuselage is only 7-1/2" wide and 8-1/2" high and the hatch for
the engine compartment is only 5" wide and 12" fortunately, the main gear doors and speed
brakes provide a bit more access but there isn't a lot of room to work and a long pair of surgical
hemostats (clamp) makes things a lot easier. Tidi-Strips are invaluable in making a clean
installation. Jets N Stuff Airline Safeties save a lot of time over using safety wire.
Safety wiring the pneumatic lines to the nose gear door cylinders is very difficult due to limited
access through the gear door opening. Airline Safeties are much easier to use in tight areas and
a puller tool (made by putting a 90 degree bend in a Dubro Ball Link Release Tool and gluing it
to a strip of hardwood) made it easy to pull the Safety over the fitting.
