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CONSTRUCTION MANUAL

www.oldschoolmodels.com

Using the Manual

Be sure to read each step thoroughly before you start 

the step. Test-fit the parts together to make sure they 

fit properly. If necessary trim to fit.

Beside each step you will notice a check box (or two). 

These are so you can keep track of your progress 

while building your kit. For steps that have two boxes, 

as in the construction of the left and right wing halves, 

these steps must be performed two times.

• Your 

Old School Model Works

 aircraft should not be 

considered a toy, but rather a sophisticated, working 

model that functions very much like a full-size airplane. 

Because of its performance capabilities, this model, if not 

assembled and operated correctly, could possibly cause 

injury to yourself or spectators, and damage to property.

• You must assemble this model according to the 

instructions. Do not alter or modify this model, as doing 

so may result in an unsafe or un-flyable model. In a few 

cases the instructions may differ slightly from the photos. 

In those instances the written instructions should be 

considered as correct.

•  You must take time to build straight, true and strong.

• You must use a R/C radio system that is in first-

class condition, a correctly sized power system and 

components (electronics, batteries, wheels, etc.) 

throughout the building process.

•  You must correctly install all R/C and other components 

so that the model operates correctly on the ground 

and in the air. (Installation shown in the manual is a 

suggestion. You may have to adjust the mounting steps 

to accommodate the size of your radio equipment.)

•  You must check the operation of the model before every 

flight to insure that all equipment is operating and that 

the model has remained structurally sound. Be sure to 

check clevises or other connectors often and replace 

them if they show any signs of wear or fatigue.

•  If you are not an experienced pilot or have not flown this 

type of model before, we recommend that you get the 

assistance of an experienced pilot in your R/C club for 

your first flights. If you’re not a member of a club, your 

local hobby shop has information about clubs in your 

area whose membership includes experienced pilots.

•  While this kit has been flight tested to exceed normal 

use, if this model will be used for extremely high stress 

flying, such as racing, or if a power system larger than 

one in the recommended range is used, the modeler is 

responsible for taking steps to reinforce the high stress 

points and/or substituting hardware more suitable for the 

increased stress.

Remember: Take your time and follow 

the instructions to end up with a well-

built model that is straight and true.

Specifications

: Wingspan: 46.5 in. • Wing Area: 725 sq in.

Airframe Length: 34 in. • Weight: 3.5 - 4 lbs. (ready to fly)

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Summary of Contents for Heinschmitt German Sunday Fighter

Page 1: ...ghout the building process You must correctly install all R C and other components so that the model operates correctly on the ground and in the air Installation shown in the manual is a suggestion Yo...

Page 2: ...Cut 1 16 x 11 x 3 ply sheet 2 BP1 Laser Cut 1 8 x 4 x 24 balsa sheet 1 BP2 Laser Cut 1 8 x 4 x 24 balsa sheet 2 BP3 Laser Cut 3 32 x 4 x 24 balsa sheet 2 BP4 Laser Cut 3 32 x 4 x 24 balsa sheet 1 BP5...

Page 3: ...d with the fit then and only then glue the parts in position IT IS VERY IMPORTANT THAT YOU ASSEMBLE THIS KIT IN THE ORDER DESCRIBED SKIPPING FORWARD IN THE STEPS COULD LEAVE YOU WITHOUT THE PROPER LEN...

Page 4: ...n the Sunday Flyer s top port left wing Step 1 Alignment triangles Pre cut into LP3 is a triangle that can be used to vertically align any of the parts in the construction of your Sunday Fighter LP3 a...

Page 5: ...is in place making sure it is securely glued to the front of each rib and that each rib is properly aligned Using a long straight edge can help holding everything in place firmly against the building...

Page 6: ...uncut 1 16 balsa sheets and extra sheeting on the BP9 sheets These are used when sheeting the center section of the wings as well as a few points on the fuselage Carefully measure and cut a few piece...

Page 7: ...sh the two dowels halfway into the holes in CM2 Now note the curvature of CM2 as the more curved surface will be oriented downward Carefully push the two dowels in the CM2 assembly into the pre cut ho...

Page 8: ...ch but don t glue it to the hatch Set the bottom wing half aside and begin work the opposite half of the bottom wing Follow steps 34 through 44 to complete the other wing half Once finished then move...

Page 9: ...halves Test fit the wing halves together one last time and sand as necessary for a good fit After test fitting join the top wing halves permanently with a bit more 30 minute epoxy Remove the dihedral...

Page 10: ...ure cut and glue in center bracing of the rudder Check your scrap pile using any possible shorter lengths first before reverting to longer uncut lengths Remove the rudder from the board then make a no...

Page 11: ...s a small circle that designates the front starboard side Pay attention to the orientation and make sure all tabs are fully seated in their matching pre cut slots while gluing Step 77 Fuselage Assembl...

Page 12: ...deck They are fitted in place in numerical order Note to help in fitting them in place the side to side fit is intentionally large sloppy This allows you to fit in one side then gives you the clearanc...

Page 13: ...and horizontal tapers into a point When you ve made matching left and right fillets glue them in place Step 96 Fuselage Assembly elevator rudder pushrods Before the bottom of the fuselage is sheeted n...

Page 14: ...y LG5 Locate LG5 from LP3 This forms the floor underneath the fuselage tray Note the engraved circle designating the front starboard corner Now you have an option here You can either glue this in plac...

Page 15: ...top using a bit more epoxy again clamping weighing it down as the glue cures These next steps are optional If you prefer not to form the top of cowl area it s up to you If you re mounting a glow engi...

Page 16: ...h all of the WH4 WH5 s installed in the fuselage Use caution to make sure the wing does not move until both holes are drilled When drilling take your time and make sure the drill is held so the bit is...

Page 17: ...have the option to use ailerons on both upper and lower wings If you choose lower ailerons only you ll need to glue one AIL1 strip to the trailing edge of the top wing as shown on each side The flat...

Page 18: ...mounted in the tank battery compartment The magnetic hatch is quickly released to get to them Power system Installing your power system of choice is up next We ll show photos for regarding electric a...

Page 19: ...Use the included 1 8 i d wheel collars to hold each wheel not included on the axles For a maintenance free installation file a small flat on the axle where the set screw of the wheel collar touches Al...

Page 20: ...ntenna collapsed Turn on the radio in your airplane but do not attach the arming switch With your airplane on the ground you should be able to walk 30 paces away from your airplane and still have comp...

Page 21: ...Construction Manual www oldschoolmodels com Page 21 GermanSunday Fighter Heinschmitt Appendix A...

Page 22: ...Page 22 www oldschoolmodels com Construction Manual GermanSunday Fighter Heinschmitt Appendix A...

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