Pegasus Models PHASAR Manual

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Pegasus Models Phasar

Pegasus Models – PHASAR

The Phasar is not intended to be a 1

model to fly or build. This is your opportunity to build a

very individual model. I can quite honestly say that you will not see another exactly the same

as yours. You will have the pleasure of constructing your own airframe, with the opportunity

to incorporating your own ideas / modifications and, best of all, colour scheme.

Disclaimer

I take no responsibility for the airworthiness or safety of your model.

Note also that radio controlled aircraft are not toys and should be treated with respect, only

being operated by competent pilots or under the supervision of a competent pilot.

This write up is to show you the sequence I used during my build and modifications I carried

out to allow the use of a CRRC Pro GF26i V2 petrol engine. That said they might be of help,

by acting as a guide to anyone building this aircraft. The main areas I have changed are the

nose, with the engine inverted and larger, and secondly the incorporation of a swept carbon

undercarriage.

By Algy Yates

Summary of Contents for Pegasus Models PHASAR

Page 1 Pegasus Models Phasar Pegasus Models – PHASAR The Phasar is not intended to be a 1 model to fly or build. This is your opportunity to build a very individual model. I can quite honestly say that you will not see another exactly the same as yours.
Page 2 Pegasus Models Phasar About the kit. The kit consists of veneered foam components, CNC milled sheet Ply and Balsa strip, Vacuum Formed parts and there is a basic hardware pack. What you will need to get. Glues: PVA, 5min Epoxy, 1Hr Epoxy, Cyno, Cyno Kicker and Laminating Epoxy.
Page 3 Pegasus Models Phasar 2) Use Part #7 to mark both inside faces of the fuselage sides, to show “Wing Key” slots and servo cable access hole. Make sure you make a Port & Starboard (STBD). Balsa Parts Lite Ply Parts...
Page 4 Pegasus Models Phasar 5) Glue on doublers (Part #7), you may need to sand the framework flat first. Ensure the doubler is inline with the top and front of the outer balsa skin. Weigh down until fully dry. Then cut out the Wing Key slots in the outer skin.
Page 5 Pegasus Models Phasar 8) Put a layer of tape over the top “Wing Key” to protect it while you sand the spacers flush with the “Keys”. Now glue on the remaining parts (#9 & 10), be very sparing with the glue, you can add fillets later, but it is very hard to remove glue from inside the “Key Ways”.
Page 6 Pegasus Models Phasar 11) Mark the C/L and thrust line (60mm up from the base) onto the “Engine Bulkhead” (#16). Now you can mark the positions of your engine mount fixing screws. Drill the holes and fit the captive nuts. Much easier to do...
Page 7 Pegasus Models Phasar Wing & Tail Construction 14) Place the Wing Key into the Wing Boxes (ensure the Port ones are ahead of the STBD ones and that they are all the right way up) and fit the bolts. Use the Lite Ply Root Ribs (#69) and mark the position that the foam core should come to.
Page 8 Pegasus Models Phasar 17) Fit the inner Trailing Edge Core (#63), ensuring its aligned with the wing root and the top surface. This will make fairing any differences easier. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 18) Cut a section of trailing edge strip (#67).
Page 9 Pegasus Models Phasar 20) Let the wing components dry thoroughly. Move to the ailerons and fit the trailing edge balsa strip (#67). This needs to dry fully before fitting the aileron leading edge or you could end up with a warped aileron (not good).
Page 10 Pegasus Models Phasar 23) Mark and cut out the lower surface of the wing to accept the servo boxes. Try to make the surfaces as smooth as possible. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 24) Build up the servo boxes from the Balsa (Parts #70, 71 &...
Page 11 Pegasus Models Phasar 26) Cut out an area centred on the expected servo output, to accept a Balsa Block. Taper the block to ensure a close fit without distorting the aileron skin. Glue the blocks in with PVA, use enough so that a good joint is guaranteed and wipe of the excess with a damp cloth.
Page 12 Pegasus Models Phasar 29) Glue a scrap piece of 1/8” balsa sheet to the inner end of the aileron. Then using a piece of 1/16” sheet to set the gap tape the aileron in position on the wing. Balsa Parts...
Page 13 Pegasus Models Phasar 32) Drill the hole to take a bolt through horn. Make sure that this hole is perpendicular to the aileron cord line. Now plane and sand the aileron hinge to a “V” shape and sand the rest smooth.
Page 14 Pegasus Models Phasar 35) Take the two tail plane halves (#42), place them top side down on a flat surface and check that the roots are vertical and fit well, sand as required. Glue the two sides together with 5min Epoxy, ensuing the top of the tail plane is flat by weighting it down.
Page 15 Pegasus Models Phasar 38) Glue the Elevator Hinge Strip (#46) and Trailing Edge (#47) into position and hold using tape. Once dry sand the elevators and stabiliser strips to conform to the upper and lower surfaces. Balsa Parts 46&47 Lite Ply Parts...
Page 16 Pegasus Models Phasar Back to the Fuselage. 41) Cut two pieces of ¼” Square Balsa (#3) to fit between the fuselage sides just behind the fuselage doublers, and glue into position. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components...
Page 17 Pegasus Models Phasar 44) At this point it is worth setting up the rear end to take your elevator servos. They need to be staggered to fit. Use Lit Ply for the servo screws to screw into. Check that it all fits together and adjust now as necessary.
Page 18 Pegasus Models Phasar 47) Shown is the rudder servo mount used, made up from 1/8 Lite Ply and ¼” Square Balsa. Balsa Parts ¼”Sqr Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 48) Make a plate to fit into the...
Page 19 Pegasus Models Phasar 50) Fit the cross beams, made from ¼” Square, at the mid- fuselage point. Ensure the fuselage is flexed equally on each side. This is where the jig really helps. Balsa Parts Lite Ply Parts Beach Ply Parts...
Page 20 Pegasus Models Phasar 53) Cut a channel to accept the tail wheel mounting plate and glue the plate in position with 1Hr Epoxy (as it tends to be less brittle). Chamfer the sides to match the triangular section. Note: Run some thin Cyno into the holes for the mounting screws.
Page 21 Pegasus Models Phasar 56) Here you see a swept leg carbon undercarriage made from a Carbon Copy ™ item ( CCU18- ) which, has been cut and Swept drilled. If you prefer you could use their Straight Legs ( CCU18-...
Page 22 Pegasus Models Phasar 59) Cut and glue the remaining sections of Truncated Triangular Strip (#18), between the undercarriage mounting plate and that already fitted. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 60) Cut two beams from Balsa...
Page 23 Pegasus Models Phasar 62) Using an off cut of Balsa make up a piece to fit between the undercarriage and the beam. Balsa Parts Scrap Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 63) Fit the tapered Balsa Strips (#26) forward of the Undercarriage Mount.
Page 24 Pegasus Models Phasar 65) Sand the back of the lower block (#27) so that it is perpendicular to the UC mount and glue in position, so that it will butt up to the UC Legs. Once dry cut and sand flush with the front face of the Fire Wall.
Page 25 Pegasus Models Phasar 68) The lower hatch is made up of 1/8” Lite Ply frame that fits into the aperture and drilled to suit the Captive Nuts, which then has Balsa sheet glued on to overlap the sides. Balsa Parts Lite Ply Parts 1/8”...
Page 26 Pegasus Models Phasar 71) Using the Balsa Blocks (#60) to measure how much the Top Deck needs to be cut back. Cut the Top Deck and then glue Former (#41) into position. Balsa Parts Lite Ply Parts Beach Ply Parts...
Page 27 Pegasus Models Phasar 74) Cut a recess into item (#76) so that it fits onto the Fire Wall (by doing this it strengthens the front Fuselage). Glue into place with Epoxy onto the Fire Wall and PVA onto the sides, as the PVA will sand more easily.
Page 28 Pegasus Models Phasar 77) Glue on the Lower Cowl block and reinforce the front with triangular stock. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 78) Sand the assembly to shape and cut out the side cheeks to clear the carburettor and exhaust.
Page 29 Pegasus Models Phasar 80) Drill or hot wire burn a hole through to the tank bay, so that a snake can be fitted for the throttle control. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 81) Use packing tape to ensure...
Page 30 Pegasus Models Phasar 83) Drill though the Cockpit Former into the main frame and fit two dowels. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Dowel Recommended Glue 84) At the front of the Cockpit Aperture fit two magnets, a dowel and a small hard wood or ply insert.
Page 31 Pegasus Models Phasar 86) Roughen up the contact area of the clear canopy to ensure a good bond with the floor assembly. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 87) Glue the Canopy into place with your preferred canopy glue.
Page 32 Pegasus Models Phasar 89) Protect the plan with clear polythene sheet, before building up the Fin core structure over the plan. Ensure the joints are accurate. Balsa Parts 52to55 Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 90) Sand the Fin core flat and then glue on the 1/16”...
Page 33 Pegasus Models Phasar 92) Build up the Rudder ensuring that all the joints are accurate. Unfortunately the photograph doesn’t show the ply plate that has been repositioned from the location on the plan to one that reinforces the joint between #57 &...
Page 34 Pegasus Models Phasar 95) At the rear of the Fuselage glue in place the two pieces of Balsa (#37), make sure they are central and upright. Balsa Parts Lite Ply Parts Beach Ply Parts Other Components Recommended Glue 96) Pin in place some scrap...
Page 35 Pegasus Models Phasar 98) Glue the blocks #60 into position and allow to dry thoroughly before proceeding. There has been an extra piece of scrap infill placed between them that will help to support the block during sanding. Balsa Parts...
Page 36 Pegasus Models Phasar 101) Mark up the elevator centre line and a line 4.5mm back. Then plane and sand them to this hinge line. Note: This will give you more than the movement stated in the instructions but if you really feel the need for more then you could ‘V’...
Page 37 Pegasus Models Phasar 104) Hinge the Elevators and Rudder. Mount the Tail Wheel Assembly and servos (with extended leads). Connect up the Elevator linkages and ensure that both Elevators are level and move together equally. Finally connect up the Closed...