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20

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10. Medium CA will be used to glue the cowl to the cowl 

ring, but you’ll need an extended glue tip in order to reach 
down inside. Pipettes and Tefl on tubing may be used, but we 
used a length of micro pushrod tubing fi t over a CA tip. 

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11. Double-check that the cowl is positioned 

precisely

 as 

you want it viewing it from all angles to make sure. The rubber 

band should securely hold the cowl in position while gluing.

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12. Use your extended glue tip to tack-glue the cowl to the 

ring with medium CA wherever you can reach—for now, the 
cowl only needs to be tack-glued well enough to hold during 
removal. 

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13. Once you’ve got the cowl glued to the cowl ring, use 

your extended hex driver to remove the cowl screws. Then, 
take off the cowl.

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14. Securely glue the back of the cowl ring with thin CA 

and the front of the cowl ring with medium CA.

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15. If running a glow engine and the bottom cowl ring 

screws are not accessible through the air inlet in the front of 
the cowl, cut a rounded slot on both sides of the cowl for the 
hex driver. If the bottom two screws are accessible through 
the inlet, the slots may not be necessary.

Proceed to “Finish the Cowl” on page 22.

Summary of Contents for Sequence 1.20

Page 1: ...using the user assembled product the user accepts all resulting liability If the buyer is not prepared to accept the liability associated with the use of this product the buyer is advised to return t...

Page 2: ...des liability insurance coverage protects modelers rights and interests and is required to fly at most R C sites Academy of Model Aeronautics 5151 East Memorial Drive Muncie IN 47302 9252 Tele 800 435...

Page 3: ...of your finished model depends on how you build it therefore we cannot in any way guarantee the performance of your completed model and no representations are expressed or implied as to the performanc...

Page 4: ...ill need a charger capable of approximately 75 Watts 3 x 4 2 x 5 63 63 x 2 75W But then you will have to charge each battery separately unless you purchase a charger with multiple charging ports If yo...

Page 5: ...ght side of the page Follow the instructions provided on the page to locate a U S Canadian or International dealer Parts may also be ordered directly from Hobby Services by calling 217 398 0007 or via...

Page 6: ...ith the wings and get to the rest of the model later 4 Use thin CA followed by a small fillet of medium CA to reinforce the servo mounting blocks to the hatch covers 5 With the servos plugged in and t...

Page 7: ...large the holes Without any glue test fit the horns into the slots be certain the horns fit all the way down and make any adjustments for a proper fit 11 Cut and remove the covering from around the ba...

Page 8: ...ge alignment pin into the end of each wing ASSEMBLE THE FUSELAGE CAUTION The turtledeck and fuselage bottom of the Sequence 1 20 are made from balsa covered foam Some solvents and adhesives will attac...

Page 9: ...been doing all along be certain to use threadlocker on all the screws 6 Mount the tail wheel with a 3 32 2 4mm wheel collar and a 4 40 set screw and threadlocker Prepare the Fuselage for Mounting the...

Page 10: ...will mount the cowl read ahead about what s involved to help you decide If mounting an electric brushless motor skip ahead to Mount an Electric Motor on page 13 Mount a Glow Engine Refer to this photo...

Page 11: ...in the photo It s not necessary to mount the muffler yet but it s shown in the photo so you can see how it fits and where to position the exhaust Install the Fuel Tank 1 Prepare the stopper assembly...

Page 12: ...ttery Precautions There are two ways to connect multiple battery packs In Series and in Parallel This is a SERIES battery adapter that connects two batteries in series 3 Cell 3200 mAh 2 Cell 3200 mAh...

Page 13: ...hex wrench to remove the set screws from the collar on the end of the RimFire 1 20 motor shaft Then reinstall them with threadlocker and securely retighten Refer to this photo while mounting the moto...

Page 14: ...nsert the arming plug right before you fly How to Make an Externally Accessible Arming Plug A First you ll need a short metal tab to bridge the tabs across a Deans male Ultra Plug A tab extracted from...

Page 15: ...remount the ESC 10 If using the arming plug carefully cut the covering from the side of the fuselage over the location you will use for the receptacle Securely glue the receptacle plug into place wit...

Page 16: ...1 2 sanding drum come in handy too 1 The cowl will be easier to start fitting if you can remove the head from your 2 stroke engine or remove the valve cover from your 4 stroke engine Also leave the mu...

Page 17: ...n get it over the engine as you really zero in on the cutout switch to the sanding drum When you re really close install the spinner back plate for aligning the front of the cowl Replace the head or v...

Page 18: ...solder to join the pushrod wire between the ends of the hexdriver with the brass tubes The key to a good soldering job is first to tin the ends of the hex driver and the pushrod wire for the hex drive...

Page 19: ...h the fit of the cowl ring re mount it to the fuselage with the screws 7 Use coarse sandpaper to roughen the cowl all the way around the inside so glue will adhere Prime the inside of the cowl with a...

Page 20: ...ring with medium CA wherever you can reach for now the cowl only needs to be tack glued well enough to hold during removal 13 Once you ve got the cowl glued to the cowl ring use your extended hex driv...

Page 21: ...ile you hold the cowl D Holding the cowl in position use one of the templates as a guide to drill the first 3 32 2 4mm hole through the cowl into the fuselage E Enlarge the hole in the cowl only with...

Page 22: ...paint Hook Up the Rudder and Elevators 1 Same as was done with the ailerons give a good pull on the rudder and look at the hinges to make sure they are all secure Use thin CA to wet any hinges that lo...

Page 23: ...ushrods to a length of 2 50mm and solder on the threaded couplers to make the elevator pushrods Connect the elevators to the servos with the same hardware as the ailerons standoffs were not used under...

Page 24: ...reat Planes C G Machine or lift the model with your fingers at the balance point Position the receiver battery over the fuselage and or shift the motor battery to get the model to balance 5 Securely m...

Page 25: ...runs smoothly at full throttle and transitions reliably between the two With the engine running at full throttle have an assistant hold the plane in different orientations including nose up and inver...

Page 26: ...ight current draw was 40 Amps Even though we know the motor is drawing 72A during brief full throttle bursts the average current draw over the duration of the flight was only 40A so the motor and ESC...

Page 27: ...xperienced helper 3 At all flying sites a straight or curved line s must be established in front of which all flying takes place with the other side for spectators Only personnel involved with flying...

Page 28: ...2 screws 4 flat washers and lock washers Great Planes 8mm to 3 8 24 thread propeller adapter for RimFire 1 20 GPMQ4971 1 Use medium grit sandpaper to roughen both sides of the FRP front bulkhead so g...

Page 29: ...ress if available to drill 1 16 1 6mm pilot holes through the FRP motor mount plate If using a different motor mark then drill holes to fit your motor Hint For perfection fasten the template to the mo...

Page 30: ...t plate motor assembly from the mounting box Cut Out Drill 7 32 5 6mm 10 Drill 7 32 5 6m holes through the firewall at the four marks and cut the rest of the way through the four partially cut slots f...

Page 31: ...31 ENGINE CUTOUT TEMPLATE FOR O S 1 55FS a...

Page 32: ......

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