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Page 20 

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Construction Manual

Take a bit of time to plan things out, 

including how you'll run the throttle 

and nose gear steering pushrods.

Also, to help hold some pushrod ends in place, you'll find four 

pieces cut into BP2 that might help. In the enlargement you'll see 

two of them glued to the back of F5 - used to hold the elevator and 

rudder pushrod sleeves in place.

When mounting the servos to the both SH's you'll need to cut eight 

3/4" lengths of the 1/4" square basswood scrap. Make four thicker 

mounting posts by laminating two pieces together then sand the 

ends flat.

Position your aileron 

servo on the inside of 

the aileron hatch so the 

servo arm output shaft is 

centered in the opening.

On the inside of each 

aileron hatch, glue one 

post on each side of the servo as shown in the photo.

Note that the left hatch is a mirror image of the right hatch.

Now fit the servo hatches into position on the bottom of the wing. 

Using the pre-cut holes as a guide, drill four 1/16” mounting holes 

into the basswood mounting posts you just installed. Harden the 

wood with a bit of thin CA and you can use  the supplied 2-56 x 

3/4” self tapping screws to secure the hatches in place. 

Finish the layout of your radio gear by adding the receiver, flight 

pack battery and the switch. We mounted the receiver to the 

tray by using a bit of self-adhesive hook-and-loop (not included). 

The radio's switch should be mounted to the opposite side 

of the muffler (to help keep the goop out of it). Or, for an even 

cleaner installation, it could be installed inside the tank/battery 

compartment - hidden under the hatch - VERY NICE!

Covering

Now it is time to cover the Kaos. Remove the powerplant, main 

gear, nosewheel assembly, pushrods, and any other components 

that would get in the way of applying the covering. 

Double check that all surfaces are smooth and ready to cover. Sand 

as necessary, then cover the entire airframe with the covering/finish 

of your choice.

Note that if you’re powering with an electric motor, you’ll need 

to make a hole for the cooling air to escape the bottom of the 

fuselage, near the rear.

When the covering is complete, re-attach all the components you 

removed earlier in this step.

Logos, numbers, etc.

If you want to use graphics similar to the 

ones we used, Old School Model Works 

has teamed up with Callie Graphics as a 

supplier for pre-cut vinyl. They are a very 

well known provider of custom graphics 

for R/C models.

We have supplied them with the artwork 

needed to cut the correct size logos. You 

can order straight from them, choosing 

the colors that work for you.

Contact Callie Graphics at this link: https://callie-graphics.com or scan 

the QR code.

Note that Callie Graphics is not affiliated with Old School Model 

Works, nor does Old School Model Works generate any income 

from this partnership.

Attach the Control Surfaces

Now is the time to attach all the control surfaces to the airframe, by 

gluing the hinges in position with thin C/A. We've noted suggested 

hinge locations for each of the control surfaces on the plans.

When using the CA hinges, first push a 

pin through on side, at the center of the 

pin as shown here. This will keep the pin 

centered as it's pushed into the surfaces. 

When you've got all the hinges for a 

surface in place, then remove the pins 

and glue the hinges.

Make sure that you attach the elevator first, then the rudder. 

Attach wheels

Use the included 5/32” 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. Also use a touch of thread-locking compound to keep the 

screw from loosening over time.

Optional canopy

Included is a canopy and though it's certainly up to you if you 

choose to use it, the canopy is just a defining part of the Kaos' 

outline, so why not use it?

The following steps will describe how to properly prepare and 

attach it.

Typical aileron pushrod setup.

Typical elevator and rudder 

pushrod setups.

TR5

Summary of Contents for Kaos

Page 1: ...atteries 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...

Page 2: ...t 1 4 x 4 x 24 balsa 4 BP8 laser cut 1 16 x 4 x 24 balsa 2 BP9 laser cut 1 16 x 4 x 24 balsa 2 BP10 laser cut 1 16 x 4 x 24 balsa 2 BP11 laser cut 1 16 x 4 x 24 balsa 2 BP12 laser cut 1 16 x 4 x 24 ba...

Page 3: ...anual and online All photos shown in this manual are of different Kaos 60 prototypes Several pieces may have changed slightly with improvements we ve made so parts may look a little different in some...

Page 4: ...to the front and the rear jig dowels Make sure you slide them on in numerical order and pay attention to their orientation The etched rib number should be at the top when properly placed Group the R1...

Page 5: ...along the wing Step 9 Wing Assembly SW2 Locate two SW2s from LP1 and LP2 These are installed the same way as the previous SW pieces just doing it twice You are paying attention to where those etched...

Page 6: ...ood to get it to fit into the slots It is a tight fit Once you re satisfied with how it fits remove it then glue it in position to each rib and to where it contacts the upper portions of SW1 and SW2 M...

Page 7: ...apply a touch of upward pressure where the jig s dowels snap into the J2 and J4 jigs You should find that the dowels pop out and you re left with an assembly that can be flipped over Before popping th...

Page 8: ...ghtly sand the trailing edge so it will continue the airfoil shape Step 33 Wing Assembly dowels Now it s time to mark and drill the leading edge to accept the wing hold dowel Using the two 1 4 pre cut...

Page 9: ...it to length giving yourself a 1 4 or so extra on each end This is used as the bottom spar and will fit into the top cutout of each rib It is STRONGLY recommended that you dry fit this first You might...

Page 10: ...sure everything fits properly and the root ribs in each wing half are touching along their entire length when assembled into a single wing Take your time and get a good fit that doesn t require a lot...

Page 11: ...ding edge Next is to cut and install the leading edge pieces Check your scrap pile to see if you have the proper length first but if not use an uncut length of 1 4 x 1 2 x 36 balsa strip Glue these in...

Page 12: ...fore to complete the elevator halves Prepare your work area Now tape the vertical fin rudder plan and a fresh piece of waxed paper on your building board Step 69 Vertical Fin Assembly VF1 VF2 VF3 Loca...

Page 13: ...as the glue cures Step 80 Fuselage Assembly F5 Locate F5 from LP5 This is attached to the rear of TR4 as shown here Pay attention to the orientation Again make sure it s held at a 90 angle to TR4 as...

Page 14: ...form the fuselage side sheeting Refer to the diagram on the fuselage plan sheets on how these notch together You ll use the same techniques that you used when edge gluing sheeting together for the wi...

Page 15: ...osition but the middle of F2 should line up with the middle of the F2 on the plans Basically what we re looking for here is the fuselage to be lined up on the centerline of the plans as well as front...

Page 16: ...106 Fuselage Assembly stab supports Using scrap 1 4 square balsa cut 4 supports for the stab These will be glued where the stab contacts the inner surface of the fuselage sides You ll glue two on the...

Page 17: ...t works of art and match each other exactly Smooth out the edges of the fuselage Because of the 1 8 sheeting and the 1 8 basswood support installed around the fuselage s perimeter you can be a little...

Page 18: ...artially pushed up through the white mounting block Slip the steering arm in place then push the nose gear wire all the way through the arm and the block Stop when the wire is flush with the top of th...

Page 19: ...a bit of medium CA glue to permanently glue the joiner into both halves making sure the completed leading edge of the elevator is perfectly straight and flat Control horns servo pushrod installation...

Page 20: ...he entire airframe with the covering finish of your choice Note that if you re powering with an electric motor you ll need to make a hole for the cooling air to escape the bottom of the fuselage near...

Page 21: ...ans rather than making large changes electronically at the radio By moving the position of the clevis at the control horn toward the outermost hole you will decrease the amount of control throw of the...

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