Stevens AeroModel Stinson 105 UM Build Instructions Download Page 1

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Wing Span:

21.25 inches |

Wing Area:

64 square inches |

Average Flying Weight:

1.75 ounces

Build Instructions -

Version 1.12

(revised 10.15.2015)

Summary of Contents for Stinson 105 UM

Page 1: ...Wing Span 21 25 inches Wing Area 64 square inches Average Flying Weight 1 75 ounces Build Instructions Version 1 12 revised 10 15 2015...

Page 2: ...kit immediately in new and unused condition to the place of purchase THIS PRODUCT IS NOT INTENDED FOR CHILDREN 12 YEARS OF AGE OR YOUNGER WARNING This product may contain chemicals known to the state...

Page 3: ...ny produced was the Model 105 The Model 105 was Stinson s first light aircraft Introduced in 1939 the Stinson Company was hard pressed to meet the demand for this popular aircraft Costing 2 995 the th...

Page 4: ...not required it is suggested that a high quality clear lacquer be used to protect and seal any unfinished wood One single light coat of clear lacquer should be sufficient to protect the model from mo...

Page 7: ...interlock like a 3D puzzle We strongly suggest that when fitting parts you dry fit use no glue the parts together first It is advised to work 1 2 steps ahead in the instructions using this dry fit tec...

Page 8: ...f slots in F1 2 Turn the assembly upside down on the work surface Fit and bond two F3s sheet 10 10 1 32 in ply to the outer slots in F1 3 Turn the motor mount assembly right side up Slide part F4 hard...

Page 9: ...ights reserved Page 9 Step 1 Step 2 Step 3 Step 4 Step 8 Step 7 Step 6 Step 5 F1 Top Top View F2 F2 F3 F3 F4 F5 Rear View Bottom View F1 F2 F1 F3 F2 Tabs F6a F6b F7 Bottom Long Arm F r o n t Long Arm...

Page 10: ...ts F10a sheet 02 10 1 20 in balsa F10b F10c and F10d sheet 03 10 1 20 in balsa Bond with CA 13 Fit fuselage assembly F10 to the left side of the central fuselage crutch Wrap F10a around the front of t...

Page 11: ...Build Instructions 2015 Stevens AeroModel all rights reserved Page 11 Step 9 Step 10 Step 11 Step 12 Step 15 Step 14 Step 13 Cont Step 13 F8 F9a Top F9b F7 Tab F9 Top F10b F10a F10c F10d F10 F10a F11...

Page 12: ...in balsa Bond with CA 20 Fit the fuselage top to the notches and tabs on the fuselage sides and formers Wrap F15b over the very end of the fuselage Square the fuselage assembly on the work surface and...

Page 13: ...tinson 105 UM Build Instructions 2015 Stevens AeroModel all rights reserved Page 13 Step 16 Step 17 Step 18 Step 19 Step 22 Step 21 Step 20 Cont Step 20 F13 Top Bottom View Bottom View F14a F14b F15a...

Page 14: ...om with the tabs and notches in the fuselage sides and formers Wrap the rear of the fuselage bottom over the end of the fuselage Square the fuselage assembly on the work surface Bond with CA 26 Fit th...

Page 15: ...s AeroModel all rights reserved Page 15 Step 23 Step 24 Step 25 Step 25 Cont Step 27 Step 26 Cont Step 26 Step 25 Cont F19a Bottom View Bottom View Bottom View Bottom View Bottom View Bottom View Bott...

Page 16: ...flush against the front of the landing gear pocket part F16 32 Position F27 sheet 09 10 3 16 in balsa flush against the front of F16 and centered over part F26 Bond with CA Do not allow any glue to e...

Page 17: ...Instructions 2015 Stevens AeroModel all rights reserved Page 17 Step 28 Step 29 Step 30 Step 31 Step 35 Step 34 Step 33 Step 32 F23 Bottom View Bottom View Bottom View Bottom View Bottom View F24 F25...

Page 18: ...e top of the formers Wrap F33 over formers F5 and F32 and hold in place with low tack blue painter s tape until dry 40 While F33 is drying press one part F34 sheet 09 10 3 16 in balsa down into the po...

Page 19: ...ions Stinson 105 UM Build Instructions 2015 Stevens AeroModel all rights reserved Page 19 Step 36 Step 37 Step 38 Step 39 Step 43 Step 42 Step 41 Step 40 F31 F32 F35 F33a F33b F33 F36 F37 F5 F5 F34 F3...

Page 20: ...bottom stringers parts F20 to flow smoothly into the fuselage bottom F19 Set the completed fuselage aside until required in final assembly Tail Surfaces 48 Assemble the vertical stabilizer from parts...

Page 21: ...ctions 2015 Stevens AeroModel all rights reserved Page 21 Step 44 Step 45 Step 46 Step 47 Step 51 Step 50 Step 49 Step 48 Va Bottom View Bottom View H Etched Line Etched Line Vb Ra Rb E1 E2 E2 Right T...

Page 22: ...se without wheel pants 55 Stack the wheel pants parts WPa through WPe sheet 07 10 1 16 in balsa in order making sure that the etched side of each part faces up Align the edges carefully then wick CA b...

Page 23: ...uild Instructions 2015 Stevens AeroModel all rights reserved Page 23 Step 52 Step 53 Step 54 Step 55 Step 58 Cont Step 58 Step 57 Step 56 Sa Bottom View W1 W2 W3 W4 Trailing Edge Bottom View WPe WPa S...

Page 24: ...pushrods through the appropriate holes in the formers and fuselage sides The rudder pushrod closest to the antenna on the receiver brick will pass through the left hole in former F9 marked R then thr...

Page 25: ...ts reserved Page 25 Step 59 Step 60 Step 61 Step 62 Step 63 Cont Step 63 Cont Step 63 Cont Step 63 015 Wire Pushrods Bottom View Center Hole F13 R Bottom View E l e v a t o r Rudder R E F9 E F12 E l e...

Page 26: ...openings Hold in place with a low tack masking tape Wick small drops of CA around the edges of the acetate windscreen to secure it in place Use as little glue as possible Excess glue can fog the aceta...

Page 27: ...ld Instructions 2015 Stevens AeroModel all rights reserved Page 27 Step 65 Step 65 Cont Step 66 Step 66 Cont Step 70 Step 69 Step 68 Step 67 Spikes Bottom View Top View Bottom View Bottom View Hump Cl...

Page 28: ...h of clear tape This will allow the landing gear to flex without the fairings popping off 75 Slit the covering over the tail skid slot at the bottom rear of the fuselage Press the tail skid part TS sh...

Page 29: ...ns AeroModel all rights reserved Page 29 Step 70 Cont Step 71 Step 71 Cont Step 72 Step 76 Step 75 Step 74 Step 73 Flush Bottom View Trim Bottom View Bottom View Bottom View Bottom View LG2 Medium CA...

Page 30: ...lly remove the small balsa bridge at the extreme rear of the fuselage 81 Slide the horizontal surfaces into the slot until the stabilizer sits flush against former F13 Make sure that the elevator move...

Page 31: ...Stevens AeroModel all rights reserved Page 31 Step 77 Step 78 Step 79 Step 80 Step 84 Step 83 Step 82 Step 81 1 8 in Bottom View Bottom View 5 8 in Remove Bevelled Side Up Right Side Bevelled Side Dow...

Page 32: ...pplying a small bead of medium CA along the bottom of the rib where it meets the fuselage 89 Fit the wings by first inserting the tip of the spar W5 through the slot in rib W2 Next fit the root of the...

Page 33: ...all rights reserved Page 33 Step 85 Step 85 Cont Step 86 Step 87 Step 90 Cont Step 90 Step 89 Step 88 3 8 in Bottom View Bottom View Bottom View 3 4 in W6 Bond Bond W5 Medium CA 2 Pieces of Scrap 015...

Page 34: ...s to prevent the shaft from turning while installing propeller onto the threaded drive shaft Congratulations The Stinson 105 UM is now complete Please continue to the Setup and Preflight sections of t...

Page 35: ...often helpful in avoiding disaster While not a thorough preflight check listed below are some of the major items that you should consider checking when developing your own preflight check list Get in...

Page 36: ...levator controls Crosswind landings should be avoided until you are comfortable with the model s in flight behavior Congratulations Once you ve completed your first flights you will have noticed that...

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