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Page 20 

www.oldschoolmodels.com 

Construction Manual

German 

Sunday Fighter

Heinschmitt

will decrease throw, and away from center will increase throw. 

Work with a combination of the two to achieve the closest or exact 

control throws listed.

Aileron 1/2” up/down (25% expo)

Elevator 5/8” up/down (20% expo)

Rudder 1” left/right (15% expo)

(

Expert tip:

 Once the control throws have been set, cut a few pieces of 

medium silicone fuel tubing (or heat shrink tubing) to go around each 
of the clevises. This will keep them from opening during flight.)

Preflight:

Charge both the transmitter and receiver pack for your airplane. 

Use the recommended charger supplied with your particular radio 

system, following the instructions provided with the radio. In most 

cases, the radio should be charged the night before going out 

flying.

Check the radio installation and make sure all the control 

surfaces are moving correctly (i.e. the correct direction and with 

the recommended throws). Test run the engine and make sure it 

transitions smoothly from idle to full throttle and back. Also ensure 

the engine is tuned according to the manufacturer’s instructions, 

and it will run consistently and constantly at full throttle when 

adjusted.

Check all the control horns, servo horns and clevises to make 

sure they are secure and in good condition. Replace any items 

that would be considered questionable. Failure of any of these 

components in flight would mean the loss of your aircraft.

Range check your radio before flying

Before each flying session, range check your radio. This is 

accomplished by turning on your transmitter with the antenna 

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 complete control of 

all functions.

If not, don’t attempt to fly! Have your radio equipment checked 

out by the manufacturer.

Warranty Information

Old School Model Works

 guarantees this kit to be free from 

defects in both material and workmanship at the date of purchase. 

This warranty does not cover any parts damage by use or 

modification. In no case shall 

Old School Model Works’

 liability 

exceed the original cost of the purchased kit. Further, 

Old School 

Model Works

 reserves the right to change or modify this warranty 

without notice.

In that 

Old School Model Works

 has no control over the final 

assembly or material used for the final assembly, no liability shall be 

assumed nor accepted for any damage of the final user-assembled 

product. By the act of using the product, the user accepts all 

resulting liability.

Limit of Liability

In the use of this product, our only obligation shall be to replace 

such quantity of the product proven to be defective.  The user shall 

determine the suitability of the product for his or her intended use 

and shall assume all risk and liability in connection therewith.

If the buyer is not prepared to accept the liability associated with 

the use of this product, the buyer is advised to return this kit 

immediately in new and un-opened condition.

For more information on all of our other products, as well as the 

latest news from Old School Model Works:

Please check out out website: www.oldschoolmodels.com

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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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