3
3
3
3
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Blue Loctite
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Glues: Thin CA, 5 minute epoxy, Aeropoxy
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Electronic gear sequencer
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Brake valve
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Batteries, regulator and switch
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Servo extensions (length may vary, depending on receiver placement)
Construction
The order of construction may be changed to suit your personal preference,
however, there are a few points to note:
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The fuel system is more easily accessed if the fuselage halves have not been joined
•
The model is more easily worked in a tight space if work is completed on each fuselage
section before they are joined
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The incidence of the main wheels must be set prior to attachment of gear doors, thus, the
fuselage should be completed before the wings.
The retract system in the prototype is operated by two valves. The two way valve controls gear
up and gear down. The gear doors stay open with the gear extended, so the door open-air lines
are simply connected to the gear down lines. The door close airlines are connected to a second
one way valve, which is operated by an electronic sequencer. The sequencer delays the
operation of the door close valve, allowing the gear to retract.
Step 1: Fuel System
Construction begins with the fuel system. Once the nose is bolted on the aft fuse, the forward
fuel tank that sits between the intakes is more difficult to install, so now is the time to complete
this step.
It is recommended that you disassemble and inspect the tank cap hardware. As photo 1 shows,
the process used to cut the tubes may leave behind a rim that constricts fuel flow and could
result in excess tank pressure and leakage. The vent tube to the top of the picture shows what
the constriction looks like before repair, while the fuel tube on the lower left shows what the
tubing should look like after clean up. If the tubing is not constricted, skip forward to the leak
check.
Photo 1
Loosen the Philips head screw and remove the stopper assembly from the tank.
Use a small, round Perma-Grit rat tail file or an Exacto knife to remove the excess metal.
You will need to inspect the ends of all tubes.
