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Copyright Maxford USA 2017

 

Page 7 of 12

 

S171201

 

Guide the throttle-servo extension from the opening in the 

top of of the wing into the notched end of the pedestal and 

bring out approx. 1- to 2-inches inside the pod.  
Test-fit the notched end of the pedestal down into the round 

opening in the top of of the wing panel – all the way to the 

‘floor’ at the base of each of these round openings. 

When satisfied with the position of the pedestal, throttle  

extension, and any wires for your onboard glow-plug driver  

if used, permanently secure the pedestal into the wing with  

epoxy.  (Do NOT glue the pod to the pedestal at this time.) 

Decide how you will position your engine, then test-fit it to the front of the pod.  NOTE:  since a glow 

engine that is mounted inverted or on its right side may have problems with hydro lock or fouling of 

the glow plug, we advise positioning the engines with their cylinders pointing straight up. 

Once you have decided how you will position your engines, test-fit engine mounts, engine, throttle 

servo, throttle pushrod and cowl. Mark and drill the necessary holes in the pod, then mount the engine 

to the firewall, install your throttle servo, and connect a throttle pushrod. Install the fuel tanks with 

their vent and clunk lines as pictured at the right. 

NOTE:  to maximize the fuel tank’s usable capacity, install the vent line 

as near as possible to the top-center of the tank, then install the fuel tank 

inside the engine mounting pod.  If using the the supplied almost 

11-ounce fuel tanks, position them on their sides to fit inside each pod’s 

fuel tank compartment; if necessary, trim wood around the tanks to 

ensure each fuel tank fits fully down inside the allotted fuel tank space 

and to ensure the pod’s hatches are able to fully close. 

Test-fit to determine where the supplied fuel-tank’s clunk and pressure 

lines need to be routed to your engine and muffler. Mark and drill the 

necessary holes in the front of the pod. Connect the tank’s ‘clunk’ line to 

the carburetor and the ‘vent’ line to the muffler.  

Mount your propeller onto the engine, then position the pod on its pedestal so the pod’s lower surface 

is approx. 

1/4

-inch above the wing. If necessary, gently twist the pod on its pedestal to give the 

propeller blades zero-degrees of left/right offset relative to the leading edge of the wing.  

When you are satisfied with the position and alignment of the pod, use epoxy to secure the pod to the 

pedestal and to provide an extra measure of fuel-proofing.  (NOTE:  you may also wish to fuelproof and 

waterproof at the pedestal’s round opening in the wing by filling any gap with epoxy, Shoe Goo or ZAP 

GOO adhesive/sealant.) 

Remove your propellers and perform a final test-fitting of the cowl, then cut or trim the cowl as 

necessary to fit your engine, muffler, throttle linkage and the tank’s fuel and/or pressure lines.  
Attach the pod to the cowl with your choice of screws, glue and/or tape. 

If you use an electric power system

, your Lipo flight-power battery and ESC may be able to fit 

inside the pods. If so, follow the process for installing servo leads outlined in the preceding glow-engine 

instructions, using the preinstalled strings to guide the servo-like lead from each ESC through the wing. 

If your ESC and Lipo battery will not fit inside the pods, you may mount your battery and ESCs down 

inside the fuselage. 

NOTE:  any electric power system needing longer wires between its Lipo flight battery and motor 

should be given that additional length only by extending the three wires between the ESC and the 

motor. NEVER lengthen the wires between your battery and ESC unless recommended or approved by 

the maker of your motor and ESC.  We recommend using a Y-harness to control both ESCs from your 

transmitter’s throttle channel; however, if you are a twin-engine pilot who likes to setup your 

transmitter with differential steering, if necessary, use separate servo extensions to connect and 

control each ESC from its own transmitter channel. 

 

 

 

Extension from 

top of wing panel 

(and glow-plug 

driver’s wires  

if used) 

 

Summary of Contents for Neptune Boatplane ARF Twin

Page 1: ...g driver for an electric power system s ESCs and flight batteries or to add any weight to fine tune the center of gravity The hatch arrives out of the box covered over To access this compartment simpl...

Page 2: ...d precut slots Composite wing joiner control horns and related hardware except items normally supplied with servos engines and motors Aileron rudder and elevator pushrods and related linkages This ill...

Page 3: ...ensions and glow plug driver wires if used or motor wires if using an electric power system then lift the wing fully away from the fuselage If desired for transport or storage the wing panels may also...

Page 4: ...e study the instructions and test fit each part to ensure you fully understand the instructions and that no parts are missing damaged or unsatisfactory Some parts may differ slightly from those pictur...

Page 5: ...to cut or abrade skin 21 This model may include plastic fiberglass and or carbon fiber reinforced parts If you ever drill grind or sand any such part wear safety goggles a particle mask and rubber gl...

Page 6: ...yer 3 Returned merchandise that is accepted by Maxford USA for credit is subject to a 10 to 20 restocking fee the final amount will be determined by Maxford USA upon receipt and examination of the ret...

Page 7: ...in the front of the pod Connect the tank s clunk line to the carburetor and the vent line to the muffler Mount your propeller onto the engine then position the pod on its pedestal so the pod s lower...

Page 8: ...e control rod into the predrilled hole in its aileron Before the epoxy has time to thicken insert the CA hinges into their precut openings in the aileron and in the trailing edge of the wing panel Mak...

Page 9: ...ach aileron and the adjacent trailing edge of its wing Twist a clevis onto one end of an aileron pushrod Insert the pushrod s other end into the opening on the EZ Link connector then attach each ailer...

Page 10: ...e tip of a hot soldering iron to burn or carefully cut and remove enough covering material from the bottom of the elevator pushrod fairing and the top center of the horizontal stabilizer to obtain goo...

Page 11: ...er tighten the wing retaining screws in the blind nuts in their wing saddle mounting blocks NOTE some flying boat fans like to create an improved water seal at the wing saddle by adding weather stripp...

Page 12: ...screws clevises and other connections throughout the airframe are secure 6 Double check the control directions of the throttle ailerons elevator and rudder 7 As with all radio controlled model airplan...

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