SD-Models Extra 260 Assembly Manual

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35% Extra 260 Assembly Manual

For assistance contact :

SD MODEL, INC.

Warehouse

United States Ad-

dress

please report errors to sales@toc1.com

SD-Models

252 Michelle Court

South San Francisco, CA

94080 USA

First edition rev. 7.06.19

Warehouse : 650-886-3028

Office :

415-933-8313

Fax :

415-933-6003

Table of Contents

Summary of Contents for SD-Models Extra 260

Page 1 Warehouse : 650-886-3028 252 Michelle Court Office : 415-933-8313 South San Francisco, CA United States Ad- 94080 USA Fax : 415-933-6003 dress Copyright © 2006 by SD-Models, Inc., Inc. All rights reserved. First edition rev. 7.06.19 please report errors to sales@toc1.com...
Page 2: Warranty Information
Warranty Information: SD-Models, Inc. guarantees this kit to be free of defects in both material and work- manship at the time of purchase. This warranty does not cover any components dam- aged by use or modification. In no case shall SD-Models, Inc., Inc. liability exceed the original cost of the purchased kit.
Page 3 SAE bolts and nuts, much more. Specifications Model Name Extra 260 35% Wingspan 102 in. Wing Area 1872 sq.in.
Page 4: Table Of Contents
Table of Contents Page Subject Open and inspect everything Mount the engine Hinge the control surfaces Mount the hatch and canopy 11 Install the control horns 12 Install the elevator servos 13 Mount the horizontal stabilizers 13 Aileron Servo Installation 14 Throttle and (optional) choke servo installation.
Page 5: Open And Inspect Everything
35% Extra 260 Assembly Manual Step 1. Open and inspect everything This section should be fairly self explanatory. In the large box you should have a fuselage with hatch., wing tube and dual stab tubes, the elevator/stab assemblies, the rudder, cowl, wheel pants, canopy, and a package with the landing gear, tail wheel bracket and miscellaneous nuts and bolts.
Page 6 Lightweight landing gear and wing tube. In the 35% EXTRA 260 we have tried to provide as much flexibility as possible with regard to engine choice. It is some- times difficult to be all things to all people.
Page 7 When aligning your engine, move it ¼”-3/8” off center to the port side in order to move the spinner back to the center of the cowl. The right thrust will cause it to be off center, but this will re-center it. Take care if you are working with the plane in an inverted position not to get mixed up.
Page 8 Hinging Like I said, the rest is very easy. Hinging is a very simple matter. We recommend that you hinge all the control sur- faces in two steps allowing the glue to dry between steps. Before you start gluing anything, test fit each control surface. Aileron to wing, ele- vator to stabilizer, rudder to fin/fuse, with the hinges in place.
Page 9 glue you prefer. I have had good success with Pro-bond polyurethane (not the pro- bond yellow furniture glue) because when drying it foams up slightly and fills the gaps between the hinge and the mounting hole. Pacer Hinge glue works great for the same reason.
Page 10: Install The Control Horns
to see if the 2 dowels are protruding out of the front at least ¼” – and that they are glued in securely. Once you are satisfied, remove the hatch. We will now attach the canopy to the hatch. If there is an air gap between the mounting tab and the inside of the fuselage side, you may want to fill it with a piece of scrap plywood.
Page 11: Elevator Servo Installation
Elevator Stab Elevator Servo Installation Find the servo bay inside of each elevator. Fish the servo wire down the middle and back out of the front hole. Mount the servo inside.
Page 12: Aileron Servo Installation
Mount the servo arm (supplied) and connect the ball link and push- rod to the control horn. Repeat the same process on the other elevator. Install horizontal stabilizer Use a sharp hobby knife to carefully trim the covering around holes in the fuse for the stab tube and the bolt holes on each side.
Page 13: Main Landing Gear Installation
Mount the throttle servo in the floor of the engine box. If you wish to use a servo to control your choke, you can mount it similarly. Use 2 pieces of 1/16” ply as doublers for the screws to have some meat on both ser- vos.
Page 14: Tail Wheel Installation
Install blind-nuts. Re-mount axle, Install 4-40 bolts. wheel, and wheel- pant. Tail Wheel Installation Mark and drill holes if neces- sary to mount your Tailwheel. Put a few drops of thin CA into the holes to harden the wood. Let it dry . Mount the Tailwheel.
Page 15 Mount the rudder servo(s). Run the pull-pull wires down the fuselage, and make sure the ca- bles are not rubbing on anything. Attach the large aluminum servo arm securely to an existing servo wheel and attach cables with hardware provided. It is OK to cross the cables to prevent rub- bing.
Page 16 Engine cooling and clearance Cut out the cowl in the required spots so you have plenty of clearance around the muffler/canisters. Provide at least this much opening. If you do not provide enough exit for the air, the engine will overheat. Once the cowl is ready to mount, slide it onto the fuselage and attach using 6 -32 bolts and washers pro-...
Page 17: Final Checks
1/8 ” at a time. It flies much better once the CG is just right. You can also log on to one of the popular bulletin boards. There you can find where other pilots have put the CG on their Extra 260.
Page 18: Control Throws
If you are in doubt about your skills, ask a skilled aerobatic pilot to help you with a trainer cord. Thanks for Purchasing our 35% Extra 260. We hope it provides you with many hours of enjoyment. Good luck!