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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.

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.

Summary of Contents for Wedell-Williams Trophy Racer

Page 1: ...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 hav...

Page 2: ...ut 1 8 x 4 x 24 balsa 2 BP6 Laser Cut 1 8 x 4 x 15 balsa 2 BP7 Laser Cut 1 8 x 4 x 15 balsa 1 BP8 Laser Cut 1 4 x 4 x 11 balsa 1 BP9 Laser Cut 1 4 x 4 x 10 balsa 1 BP10 Laser Cut 1 4 x 4 x 11 balsa 1...

Page 3: ...KIT IN THE ORDER DESCRIBED SKIPPING FORWARD IN THE STEPS COULD LEAVE YOU WITHOUT THE PROPER LENGTHS OF WOOD TO FINISH THE KIT WE VE INCLUDED ENOUGH WOOD TO EASILY COMPLETE THIS KIT BUT YOU MUST TAKE C...

Page 4: ...lengths of the basswood roughly 2 5 long Slide these in position as shown the glue in position when satisfied with the alignment Step 9 Wing Assembly R5 Locate R5 from BP4 and fit it in place as shown...

Page 5: ...and cut a 3 4 strip the entire length of the piece to form the trailing edge sheeting It fits in place as shown butting up against the trailing edge balsa strip When satisfied with the fit and locatio...

Page 6: ...ht edge from back in step 20 to push down along the entire edge of sheeting until the glue has cured Step 28 Wing Assembly leading edge sheeting Once the glue has cured from the previous step then you...

Page 7: ...lower front sub spar Locate the leftover 3 16 square balsa stick you cut back on step 19 Measure and cut to make the lower front sub spar When satisfied with the fit and location glue to all of the ri...

Page 8: ...ore surface for a better bond later on Step 49 Wing Assembly tidying up radio hatch Using a bit of 1 8 scrap from the BP sheets make two pieces to frame the top and bottom of the radio hatch opening Y...

Page 9: ...of the fuselage Then measure cut and install the longerons that are in the middle of the fuselage Finally locate F6 from BP14 and install it place between the longerons as shown on the plan Step 60 F...

Page 10: ...ESE SHEETS LEAVE THOSE IN Glue these plywood sheets in place then locate FS3 from BP6 and FS4 from BP7 Glue those in place Step 70 Fuselage Assembly vertical fin sheeting Locate the VF SHEET from BP21...

Page 11: ...84 Final airframe assembly D1s Locate the remaining four D1s from BP1 and BP2 Glue these on each side of the dihedral brace protruding from the other side of the fuselage Once dry sand them and test...

Page 12: ...s These are used to bolt the main gear to the fuselage Do this now paying attention to the angle of the main gear The rear of the main gear should sweep slightly forward Make sure the lock nuts are ti...

Page 13: ...a receiver battery and a power switch Location of the battery will most likely be determined when balancing the model in later steps We mounted ours under TR tank battery tray on the port side The sw...

Page 14: ...he included backer plates for any of the control horns when mounting this way If you are a bit squeamish about threading these screws into C A hardened balsa for the elevator and rudder substitute our...

Page 15: ...complete control of all functions If not don t attempt to fly Have your radio equipment checked out by the manufacturer AMA Safety Code Old School Model Works highly recommends that before flying thi...

Page 16: ...Page 16 www oldschoolmodels com Construction Manual APPENDIX A...

Page 17: ...Construction Manual www oldschoolmodels com Page 17 APPENDIX A...

Page 18: ...Page 18 www oldschoolmodels com Construction Manual APPENDIX A...

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