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                  Construction Manual 

www.oldschoolmodels.com 

Page 17

Step 127 - Power system

Installing your power system of 

choice is up next. The photo 

shown here is for a 20cc gas 

installation. Note that this 

is only a suggestion as 

your power system will 

likely vary from what’s 

shown here.

Gas/Glow power

The engine mounts so the 

crankshaft is positioned 

on the thrust line, as 

shown on the plans. Holes 

will also need be drilled 

for the throttle pushrod, 

fuel lines (and ignition 

pickup wire if gas) to pass through into the fuselage.

Electric power

If choosing electric power, the motor should mount with it’s shaft 

on the thrust line as shown on the plans.

A few cooling holes will need to be cut into the firewall as they are 

needed for internal battery cooling. Exit holes further back of the 

fuselage also need to be cut.

Power batteries are mounted to the TRAY and the ESC can be 

mounted below the tray.

Both the ESC and battery should be held in place with more self-

adhesive hook-and-loop.

We mentioned this earlier, but it bears repeating. Our engine size 

recommendation range is a 20cc gas, .90-1.50 glow or an electric 

motor with similar power output. Remember that the Robinhood 

80 is a fun-scale model that is intended to fly at scale-like speeds, 

so prudent throttle management should be practiced. 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.

Step 128 - Covering

Now it is time to cover the Robinhood 80. Remove the powerplant, 

main gear, the tailwheel, 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 rear of the fuselage. We choose to add a 

length of 1/4” square balsa scrap about an 1” in front of the TW1 

(underside of fuse). This creates a smaller area where the covering 

can be cut away for a vent.

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 on the previous page.

Note that Callie Graphics is not affiliated with Old School Model 

Works, nor does Old School Model Works generate any income 

from this partnership.

Step 129 - Attach the Control Surfaces

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

gluing the hinges in position.

Step 130 - Attach wheels. 

Use the included wheel collars 

to hold each wheel (not included) on the axles (one on each side 

of the wheel). 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.

Step 131 - Attach hatches. 

Place the top hatch in position and 

using the pre-cut holes as a guide, drill the two screw holes into the 

firewall using a sing a 1/16” bit.

Using the same bit, attach the bottom hatch to using the same 

technique.

Both hatches are held in place with 2-56 x 3/4” self tapping screws.

Step 132 - Windows. 

Finishing the assembly of the RH80 are 

the windows. On the fuselage plans we have included a template for 

the side windows and the front windscreen. Cut the windows from 

the included plastic sheet, making sure to cut it slightly oversize 

then trim as necessary. Attach each window to the fuselage with 

canopy glue, or you can use number of small screws (not included) 

evenly spaced around the window perimeters, if you’d like to make 

the windows removable.

This completes the assembly of the Robinhood 80. Now you’ll 

need to adjust the control throws and check for balance.

Step 132 Recommended C.G. setting:

An important part of preparing the aircraft for flight is properly 

balancing the model. This is especially important because of the 

various motor/battery combinations that can be used.

CAUTION! DO NOT SKIP THIS STEP!

The recommended Center of Gravity (CG) location for the RH80 

is measured back 4-1/4” from the leading edge of the wing, and 

you’ll see this marked on the fuselage plan with this symbol. 

If necessary, move the battery, receiver, and/or add weight to 

Create this vent area on 

the underside.

Содержание Robin Hood 80

Страница 1: ...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...

Страница 2: ...Cut 1 8 x 6 x 24 sheet 1 LP7 Laser Cut 1 8 x 6 x 24 sheet 1 LP8 Laser Cut 1 8 x 6 x 24 sheet 1 LP9 Laser Cut 1 8 x 6 x 24 sheet 1 LP10 Laser Cut 1 8 x 6 x 24 sheet 2 BP1 Laser Cut 1 8 x 4 x 24 sheet...

Страница 3: ...THIS ROBINHOOD 80 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...

Страница 4: ...pletely slide into the slots in R8 as this will guarantee that R8 is held in vertically When satisfied with the fit glue R8 and WF4 to the bottom spar Step 7 Wing Assembly attach R6 Locate one R6 rib...

Страница 5: ...end against using an instant setting glue If you are using CA use a thicker formulation that gives you a bit of working time Measure and cut one of the 3 8 square basswood strips to use as the upper s...

Страница 6: ...ailing edge It should be cut so it perfectly fits between the two R5B pieces you installed in the last step It should not be a forced fit that would push the R5B s out of alignment Once cut and positi...

Страница 7: ...LP10 R1 is laminated to R2 and the surrounding sheeting which is now hopefully sanded smooth and flat Although C A glue can be used we recommend epoxy for this step You should also have a couple of s...

Страница 8: ...ps These will form the upper and lower longerons Measure cut pin and glue into position Note that the top longeron does not completely seat into the gap on top of the fuselage side There needs to be a...

Страница 9: ...It could be a good idea to use a few weights to hold the port side securely and firmly in place why the glue cures Step 52 Fuselage Assembly top cross brace Cut the top cross brace from some of the le...

Страница 10: ...in position as shown Step 63 Fuselage Assembly F7 cross brace Using 3 16 x 3 8 basswood measure and cut the cross brace to strengthen the top of F7 Glue in position as shown Step 64 creating rear tape...

Страница 11: ...brace is exactly centered on the fuselage and completely seated in the slot when gluing in place Use epoxy for this Now measure and cut the cross bracing that goes across the center section There are...

Страница 12: ...d properly cut through this thickness so this piece is hand cut and more often than not it will fit as designed However there are times where it might require a little sanding to fit properly After sa...

Страница 13: ...ame with the remaining S4 pieces Step 94 Elevator leading edge The two S3 and two S4 assemblies should be pinned in place Measure two lengths of 1 4 x 1 2 balsa to make the leading edges of the stab G...

Страница 14: ...n is properly seated measure the angle between the fin and stab If at 90 then it s correct If not reposition as needed Draw a line on the stab where it meets the fuselage then remove the stab fin and...

Страница 15: ...use epoxy to secure it in place This fiberglass cloth is not included but should be readily available at your local hobby store Step 118 Aileron servo hatches From leftover 3 16 x 3 8 x 36 basswood st...

Страница 16: ...leading edge of the ailerons Do this for both wing halves Step 122 Airframe Assembly sanding Now take the time to go over the entire airframe and give it a good final sanding Make sure everything is...

Страница 17: ...ents 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 viny...

Страница 18: ...h 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...

Страница 19: ...Construction Manual www oldschoolmodels com Page 19 APPENDIX A...

Страница 20: ...Page 20 www oldschoolmodels com Construction Manual APPENDIX A...

Страница 21: ...Construction Manual www oldschoolmodels com Page 21 APPENDIX A...

Страница 22: ...Page 22 www oldschoolmodels com Construction Manual...

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