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Experimental Aircraft Models Glasair SII Assembly Manual

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Glasair SII / Glasair III
Scale: 1= 3.5 (28% Full Size)
Wingspan: 80" (2032 mm)
Wing Area: 1024 in
Flying Weight: 12 lbs (5.04 kg)
Wing Loading: 27 oz/ft
Length: 70" (1778 mm)
Radio: 5 Channels with 7 servos
Engines: 1.08 – 1.2 cu in 2 Cycle
1.20 – 1.4 cu in 4 Cycle
Experimental Aircraft Models, LLC (EAM) guarantees this kit to be free from defects in material
and workmanship. The warranty does not cover individual parts damaged by modification or
abuse. In no case will EAM's responsibility or liability exceed the original purchase price of the
kit. EAM reserves the right to change or modify this warranty at any time.
EAM assumes or accepts no liability for the manner in which this model aircraft is used by the
user, in any condition of assembly. By the act of purchasing this kit, the purchaser and any
subsequent user accepts full responsibility and all resulting liability.
If the purchaser is not willing to accept the above liability associated with the use of this
model aircraft, the purchaser is advised to return this kit immediately to the source from
where it was obtained.
Please read this manual thoroughly before starting assembly. It includes critical assembly
instructions and warnings in regards to the safe and enjoyable use of this scale aircraft model.
"Enhancing the Homebuilt Experience"
Radio Control Scale Model
2
2
(66.1 dm
)
2
WARRANTY
Experimental Aircraft Models LLC
1224 Amber Dr.
Thunder Bay, Ontario
Canada, P7B 6H7
www.rchomebuilts.com

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Summary of Contents for Experimental Aircraft Models Glasair SII

  • Page 1 1.20 – 1.4 cu in 4 Cycle WARRANTY Experimental Aircraft Models, LLC (EAM) guarantees this kit to be free from defects in material and workmanship. The warranty does not cover individual parts damaged by modification or abuse. In no case will EAM’s responsibility or liability exceed the original purchase price of the kit.
  • Page 2 We sincerely appreciate your vote of confidence in purchasing our rendition of the Glasair SII / III and truly wish you the best of enjoyment. Please feel free to e-mail us with kit comments from our web site at www.rchomebuilts.com...
  • Page 3 All Glasair III’s have retractable gear Thus if you build your model with a fixed trike gear it will be a Glasair SII-FT. If you build it with the optional Robart retracts it will be either a Glasair III, or a Glasair Super...
  • Page 4 The recommended engines are a 1.08-1.20 two stroke or 1.20-1.40 four stroke. Experimental Aircraft Models discourages the use engines larger than this range. The Glasair is an aerodynamically clean design that simply does not require larger than the recommended engines.
  • Page 5 ASSEMBLY MANUAL: Glasair SII / III ever done that! Collect these items in a medium size plastic container or zip-lock bags to keep them safe until used. If you tag or mark them then you might even remember where they came from! The Glasair is supplied with METRIC hardware.

  • Page 6: Wing Assembly

    ASSEMBLY MANUAL: Glasair SII / III WING ASSEMBLY The flaps are already hinged and ready to go; however the hinge points in the ailerons must be installed. Next we’ll install the servos on their mounts, install the control horns and linkages, wiring harnesses and finally install the servos in the wing.
  • Page 7 ASSEMBLY MANUAL: Glasair SII / III 3. Next step is to install the aileron to the wing. The hinge points do not bottom out on the wing side, so it is important that the hinge pocket be wetted out nicely.
  • Page 8 ASSEMBLY MANUAL: Glasair SII / III joint. Another possibility is to use electrical tape, We have even seen successful installations that use a loop of dental floss to tie the connection together! How ever you do it, make sure the connection is retained.
  • Page 9 ASSEMBLY MANUAL: Glasair SII / III the little stick on the string. Keep it smooth and torpedo-like to make it easier to slip through the wing. Pull the lead through until it reaches the flap servo bay. Tape the flap servo lead to the aileron lead trying not to make the Torpedo any fatter –...
  • Page 10 ASSEMBLY MANUAL: Glasair SII / III Port Aileron Servo Strbd Aileron Servo 10. Unless you are using a computer radio with the ability to reverse-mix the flap servos, you will need a reversing Y-Harness for the flap servos. Frankly even with the computer, the reversing Y is the simplest means to get both servos moving the same direction.
  • Page 11 ASSEMBLY MANUAL: Glasair SII / III FUSELAGE: FRONT END ASSEMBLY Here is another one of those builder selection choices. Because the dimensions on the engine mount are “square” it is possible to install the engine either side mounted (piston horizontal) or inverted – and we have customers who have done it either way.
  • Page 12 ASSEMBLY MANUAL: Glasair SII / III 2. Using a straight edge, check the contouring of the cowl mounting blocks relative to the line of the fuselage. In the picture to the right the block has been sanded and tapered to match the fuselage.
  • Page 13 ASSEMBLY MANUAL: Glasair SII / III stopper, align the tubes and carefully tighten the wrap and tighten the tie strap that retains the stopper on the tank. When completed use a permanent marker to identify which tube is which – it WILL help you later! Fuel Tank Assembled 6.
  • Page 14 ASSEMBLY MANUAL: Glasair SII / III 8. Slide the cowl into position all the way back against the fuselage. Measure the distance from the Engine mounting firewall to the nose ring of the cowl – in this example the distance was measured as 5.75”...
  • Page 15 ASSEMBLY MANUAL: Glasair SII / III With the cowl aligned to the spinner backplate, slip some shims (scrap balsa or cardboard work great) between the cowl and the spinner backplate to hold everything in position. Cowl in Position 13. Use a 1.5 mm ( ”) bit to drill the 6 cowl mounting blocks for the mounting screws.
  • Page 16 ASSEMBLY MANUAL: Glasair SII / III 15. By the way, if you choose an inverted installation most of the steps are pretty much the same: EXCEPT the fuel tank neck will not interfere with the engine mount. The throttle pushrod location will be vastly different and you WILL have to cut a hole where the engine cylinder juts through the cowl.
  • Page 17 ASSEMBLY MANUAL: Glasair SII / III fuselage. Flip the paper template back and side the cowl into position. With the cowl aligned with at least 3 cowl screws, extend the template over the cowl and mark the position of the clearance hole on the cowl.

  • Page 18: Fuselage & Tail Assembly

    ASSEMBLY MANUAL: Glasair SII / III 6. This step is optional and cosmetic. Now all the holes are drilled, and pieces installed, remove everything that is removable and PAINT the firewall and front end wood structure; after all the Glasair’s are all-metal and Fiberglass airframes! Use fuel proof dope (like Sig or Brodak) or polyurethane paint in the color of your choice.
  • Page 19 ASSEMBLY MANUAL: Glasair SII / III of the fuselage. Thus, this manual is going to show the construction of pushrods for the elevator and rudder using 4-40 rod ends affixed to ” dowel rods 1. We want the linkages to overhang past the dowel by about 150mm (6”). We also...
  • Page 20 ASSEMBLY MANUAL: Glasair SII / III overlap seam is along the leading edge. Use the edge of that seam to determine the bottom of the stabilzer, use a marker to write BOTTOM at the center of the stab on the bottom side.
  • Page 21 ASSEMBLY MANUAL: Glasair SII / III 8. Use a felt tip pen to mark the position of the aligned stabilizer with the fuselage. The Ultracote covering MUST be removed between these two lines. Use the small soldering iron to burn & seal the covering along the marker lines, remove the covering from the center of the stabilizer, then wipe off any remnants fo the marker.
  • Page 22 ASSEMBLY MANUAL: Glasair SII / III Coat the bottom of the fin with epoxy, and slip the fin into position. This should pull the fin down into its slot, Back on top use any extra epoxy to fill in any remaining gaps around the stab or between the fin and the fuselage.
  • Page 23 ASSEMBLY MANUAL: Glasair SII / III the “Y” pushrod into each of the plastic tubes, then push the rod into the fuselage; the plastic tubes will guide the ends of the “Y” out the slots in the fuselage. Elevator Pushrod Installed 14.

  • Page 24: Landing Gear Installation

    ASSEMBLY MANUAL: Glasair SII / III LANDING GEAR INSTALLATION Fixed Trike Gear Set-up 1. Locate the nose gear fairing, wire, wheel, collars and straps. Take the wheel and colors off the wire. Slip the wire into the fairing part way...
  • Page 25 ASSEMBLY MANUAL: Glasair SII / III and the wire collar, note that there is another flat ground into the wire where the top collar is installed. This may or may not be the case for your Glasair, but for the model assembled for this manual, we used the smallest (5mm) spacer supplied with the spinner as a filler piece to help reduce excess play in this assembly.

  • Page 26: Radio Setup

    ASSEMBLY MANUAL: Glasair SII / III head bolts that secure the wheelpant to the gear leg then lock down the axle bolt. We drilled an access hole through the wheelpant to the outside just large enough for a screwdriver to make it easier to install the screw for the main wheel.
  • Page 27 ASSEMBLY MANUAL: Glasair SII / III 3. The Nose Gear Pull-Pull cable installation starts at the steering arm by first slipping one of the small copper tube ferrules Use adjustable clevis over the cable. Next, route the cable @ servo end...
  • Page 28 ASSEMBLY MANUAL: Glasair SII / III Adjustable length arm on throttle servo Position pushrod Plastic tube using long drill pushrod Throttle Pushrod Installed 6. The Glasair kit provides two alternative places on the forward starboard side of the fuselage to mount the radio switch. The smaller opening is designed if you plan on...

  • Page 29: Final Assembly

    ASSEMBLY MANUAL: Glasair SII / III 8. The receiver antenna can be routed internally through the fuselage and exit out one of the pushrod holes. Receiver Antenna Routed 9. The radio battery pack must also be isolated in a foam rubber wrap and installed securely, however we will also take advantage of the weight of that component to help balance the Glasair.
  • Page 30 ASSEMBLY MANUAL: Glasair SII / III feel free to experiment. The Glasair is a wonderfully stable and responsive model. BENCH PRE-FLIGHT Make sure all clevises have their silicone keeper rings in place and as close to the servo or control arm as possible.

This manual is also suitable for:

Glasair iii