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Old School Model Works Wedell-Williams Trophy Racer Construction Manual

Old School Model Works Wedell-Williams Trophy Racer Construction Manual

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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,
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.
batteries,
wheels,
etc.)
Wedell-Williams Prototype
Specifications:
• Wingspan: 44 in. • Wing Area: 560 sq in.
• Airframe Length: 34.75 in.
• Weight: airframe only: 2.25 lbs.
ready-to-fly - 3.75-4.5 lbs.
• 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.
www.oldschoolmodels.com

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Summary of Contents for Old School Model Works Wedell-Williams Trophy Racer

  • Page 1 • Weight: airframe only: 2.25 lbs. these steps must be performed two times. ready-to-fly - 3.75-4.5 lbs. • 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.
  • Page 2: Included Items

    WARNING We urge you to join the AMA (Academy of Model Aeronautics) and a local R/C club. The AMA is the governing body of model aviation READ THROUGH THIS MANUAL and membership is required to fly at AMA clubs. Though joining the AMA provides many benefits, one of the BEFORE STARTING CONSTRUCTION.
  • Page 3 Online Supplementary Photos one 12” for throttle if glow powered) • 8 clevises for the pushrods We realize that the smaller black-and- • 2 - 3” diameter wheels white photos in this manual might not • 1 - tailwheel assembly show some of the steps as clearly as •...
  • Page 4 Step 4 - Wing Assembly (WB2 & WB2A) Step 9 - Wing Assembly (R5) Locate one WB2 and one WB2A Locate R5 from BP4 and fit it sheer web from BP20. in place as shown, using the Note that these have a small same techniques you used in circle engraved on one side.
  • Page 5 edge sheeting. Step 15 - Wing Assembly (attach R6) It fits in place as shown, Fit the R6 assembly in butting up against the position. Make sure it is trailing edge balsa vertical and the WB4 tabs are strip. properly inserted in the slots When satisfied with the of R6.
  • Page 6 Step 25 - Wing Assembly (cutting R1 & R2) Step 28 - Wing Assembly (leading edge sheeting) Carefully cut away the center of the R1 Once the glue has cured from the and R2 ribs, leaving a box as shown previous step, then you can carefully in the photo.
  • Page 7 Step 33 - Wing Assembly (R3A) Step 38 - Wing Assembly (servo rails) Carefully remove the wing Way back in step 8, you half from the board and put a piece of 3/16” x 3/8” flip it over. Locate one R3A basswood aside as “scrap”.
  • Page 8 Step 43 - Wing Assembly (center sheeting) Step 49 - Wing Assembly (tidying up radio hatch.) Just as you did in Using a bit of 1/8” scrap from the step 29, it’s time BP sheets, make two pieces to to use some of the “frame”...
  • Page 9 fuselage. Then measure, cut and install the longerons that are in Step 55 - Stab Assembly the middle of the fuselage. Locate the two S1 Finally, locate F6 from BP14 and install it place between the pieces from BP8 & longerons as shown on the plan.
  • Page 10 Step 65 - Fuselage Assembly (LG) Step 70 - Fuselage Assembly (vertical fin sheeting) Remove the fuselage from your board and Locate the VF SHEET from flip it over. Lightly sand the starboard side. BP21. They are used to cover Locate the two LG pieces from LP2.
  • Page 11 Step 76 - Wheel Pants (P1) Step 80 - Final airframe assembly (trimming) Remove the axle shafts from the One last bit of housekeeping wheel pant assembly. Now locate before the wings can be two of the P1s from BP2. Carefully attached.
  • Page 12 wing half. When satisfied with the fit, mix more epoxy, and attach Step 89 - Wheelpants (outer wall brace) the other wing half to the fuselage - again making sure it’s 90° to Locate both wheelpants and two P5s from LP3. the fuselage and in-line with the other wing.
  • Page 13 This completes the airframe assembly of the Trophy Racer. switch. Location of the You should now have a completed airframe ready for battery will most likely covering, as well as radio and power installation. Here’s a be determined when picture of the prototype Trophy Racer at this stage. balancing the model in later steps.
  • Page 14 Note that Callie Graphics is not affiliated with Old School Model If you are using flexible pushrods for the elevator and rudder Works, nor does Old School Model Works generate any income (such as Dubro’s Lazer Rods, Sullivan’s Gold-N-Rods, etc.) we have from this partnership.
  • Page 15 If not, don’t attempt to fly! Have your radio equipment checked out by the manufacturer. 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 You can reach us on Facebook: www.facebook.com/oldschoolmodelworks...
  • Page 16 APPENDIX A Page 16 www.oldschoolmodels.com Construction Manual...
  • Page 17 APPENDIX A Construction Manual www.oldschoolmodels.com Page 17...
  • Page 18 APPENDIX A Page 18 www.oldschoolmodels.com Construction Manual...