Aileron Control System Installation - Model Tech Fun Fighters P-51 ARF Assembly Instructions Manual

Table of Contents

step 2: instaLLing the ruBBer stopper asseMBLy

❑ With the stopper assembly installed, double-check to make sure that the clunk can move freely inside the fuel tank. Ideally, the

clunk should be about 1/4" (6mm) in front of the back of the fuel tank. This will ensure that the clunk can't get stuck in the fuel tank

during flight. Also double-check that the end of the vent tube is just below the top of the fuel tank.

PRO TIP Holding the fuel tank up to a bright light will allow you to see inside to double-check the correct position of the clunk

and the vent tube.

step 3: instaLLing the fueL tanK

IMPORTANT When you install the fuel tank in the next procedure, make sure that the top of the fuel tank is toward the top of

the fuselage.

❑ (2) 3-1/8" (80mm) Threaded Pushrod Wires with 90º Bends

❑ (2) Adjustable Control Horns

❑ (2) Clevises

❑ Thick C/A

❑ # 1 Phillips Head Screwdriver

❑ Needle Nose Pliers

❑ Modeling Knife

❑ Electric Drill

❑ Push the metal neck-reinforcement ring over the neck of the fuel tank

opening, then carefully push the stopper assembly into the fuel tank and

rotate it until the aluminum vent tube rests just below the top of the fuel tank.

When satisfied with the alignment, install and tighten the M3 x 18mm machine

screw until the rubber stopper expands and seals the fuel tank opening.

IMPORTANT The top of the fuel tank is a shorter distance from the fuel

tank opening than the bottom.

❑ Cut two pieces of silicone fuel tubing (not included) to a length of 6"

(152mm) and install them to the aluminum tubes at the front of the fuel tank.

PRO TIP Mark the ends of the silicone tubing "vent" and "pick-up" so

you don't confuse them when it comes time to connect them to the engine

later on.

❑ Feed the ends of the fuel tubing through the predrilled hole in the firewall

and slide the fuel tank into position, making sure that the stopper assembly

lines up with, and is firmly pushed into, the predrilled hole in the firewall.

❑ Use pieces of foam rubber, wedged between the fuel tank and the fuel

tank compartment, to hold the fuel tank securely in place.