SIG RISER SIGRC52, Building And Flying Instructions

Page 1: ...ting to fly your Riser for the first time Instructions for installing the optional wing spoilers are included with the kit on a separate sheet Spoilers are essential for making consistent spot landings and for other multi task soaring events Since they aren t necessary for everyday fun flying the materials for adding spoilers to your RISER are not included in the kit Notes Before Beginning Constru...

Page 2: ...3 32 x3 x36 Fuselage Sheeting Top and Bottom 1 1 4 x2 1 4 x8 Fuselage Top Block and Hatch Stick Balsa 14 1 16 x3 16 x36 Capstrips 3 1 8 x3 16 x36 Diagonal Ribs for Tail Fuselage Stiffeners 3 3 16 x1 4 x36 Stabilizer Elevator Fin and Rudder Frames 1 1 4 Triangle x12 Fuselage Longerons 3 1 4 Triangle x36 Fuselage Longerons Special Shaped Balsa 4 1 4 x1 x20 Trailing Edge Stock 4 3 8 x20 Shaped Leadin...

Page 3: ...pe to use is strictly a matter of personal preference based on your prior experience with a previous model Some of the steps in these instructions call out the type of glue to use for that particular assembly In other areas you can use your own judgement as to which type is best suited to the purpose and to your building schedule For general construction of the RISER we recommend that you use cyan...

Page 4: ...rking in tight places and for careful shaping where a big block is too hard to control WING CONSTRUCTION Inboard Wing 1 a Pin down the 1 16 x1 front bottom sheeting b Pin down the 1 16 x3 16 balsa spar cap strip c Pin down the 1 4 x1 trailing edge 2 Cut pieces of 1 16 x3 balsa for the center section sheeting Glue and pin in place 3 Cut pieces of 1 16 x3 16 balsa for the bottom rib cap strips 4 Glu...

Page 5: ...op center section sheeting Leave open as shown in the picture the area where the 3 32 plywood dihedral brace WR will be installed 12 Cut the wing gussets from the 3 16 printed balsa sheet Glue wing gusset WGR in place as indicated on the plan 13 Tape a piece of 80 grit sandpaper to a flat surface Carefully sand the inboard and outboard dihedral joints 14 Complete cutting the slots in the two balsa...

Page 6: ...in place Glue the ribs to the cap strips spruce spar planking and trailing edge stock 20 Use the outboard rib guide to angle rib W 2 Glue and pin W 2 in place Use a piece of cap strip stock to put the guide level with the rib cap strip 21 a Pin but do not glue the piece of shaped leading edge in place b Use a pencil to mark where the ribs touch the leading edge 22 Use these marks to draw a line on...

Page 7: ... plans 30 Block sand the entire wing panel to smooth out any rough surfaces 31 Tape a piece of 80 grit sandpaper to a flat surface Carefully sand the dihedral joint 32 Repeat this process for the tip rib 33 Trace the wing tip pattern on the 3 4 x1 x6 balsa block 34 Carve the tip block 35 Place the tip block against the tip rib Trace around it as shown in the picture 36 Carve the tip block up to th...

Page 8: ...ces in the inner panels at the outboard rib Pin down the inboard panel over the plan Position the outboard panel on the plan against the inboard panel and raise the tip rib 2 1 4 as shown If the joint between the two panels does not match perfectly sand one or both of the ribs until it does Glue the panels together with epoxy glue Have a wet joint to insure that the glue will fill any gaps in the ...

Page 9: ...ng panels together 46 Cut pieces of 1 16 x3 x36 balsa and finish sheeting the center section of the wing 47 Rubber bands can cut into the balsa wood To protect the area use pieces of scrap 1 32 plywood and glue into place on the wing trailing edge as shown 48 Completely sand the entire wing with fine sandpaper The wing is now ready for covering Optional Spoilers 1 a Cut to length a piece of 1 4 x ...

Page 10: ...sic wire per pattern and epoxy glue in place as shown on the plans Also epoxy glue a small piece of glass cloth over the wire 8 Repeat this process for the other wing and then continue with the wing construction After covering the wing and the spoilers make hinges for the spoilers out of pieces of plastic film covering or trim tape and install the spoilers Feed the cord through the plastic tubing ...

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Page 13: ...ue one doubler FDF onto the right fuselage side as indicated and the other to the left fuselage side Repeat this same procedure for right and left doublers FDR 54 Cut out the fuselage sides with a knife Be sure to cut just outside of the lines 55 Use a sanding block to sand the fuselage sides to final shape Match the sides to each other 56 The fuselage sides are now ready for joining 57 Refer to t...

Page 14: ...he top of the fuselage is sheeted later 65 Use a sanding block to smooth the rough edges 66 Glue the 1 8 Lite Ply towhook base in place as indicated on the plans 67 Drill a hole for the towhook through the bottom of the fuselage and the towhook base Do not glue the towhook in It is best to do this after covering the model 68 It is best to have the tail parts complete at this time so that they may ...

Page 15: ...rough the servo arm and hook it up to the servo This will give an indication of where the outer tubing is to be fastened to F 3 74 Remove the inner tubing and use a piece of scrap 1 32 plywood to make a mounting bracket for the outer tubing as shown Epoxy glue this bracket in place 75 Epoxy glue the outer tubing in place at the rear of the fuselage Wipe off any excess glue 76 Use a single edge raz...

Page 16: ... Glue and pin the 1 1 2 x2 x2 1 2 balsa nose block to the fuselage It should be flush with the bottom of the fuselage and a slight jog at the top of the fuselage as shown in the picture 87 Use the nose block side view drawing to trace the pattern on the side of the nose block 88 Carve the nose block down to the line previously drawn Note that part of the fuselage top sheet will also be carved 89 U...

Page 17: ...wood doublers for the 5 32 wing hold down dowels It is best not to glue in the dowels until after the model is covered The fuselage may now be covered Refer to the covering section TAIL CONSTRUCTION 96 Use a modeling knife or jig saw to cut the printed parts out of the 3 16 printed balsa sheet Be sure to cut just outside of the lines 97 Sand the pieces down to the line with a sanding block 98 Pin ...

Page 18: ... tips 105 Pin the elevators over the plans Trial fit the 3 16 square x4 spruce joiner 106 Glue the spruce joiner in place 107 Block sand the elevator Be sure to sand off the printed areas 108 Round all edges of the elevator with a sanding block Also round the edges of the spruce joiner 109 Glue and pin R 4and all pieces of 3 16 x1 4 balsa in place over the plans for the rudder 110 Glue and pin R 1...

Page 19: ...to insure wood to wood contact at the glue joint 119 Position the wing on the fuselage Use Kwik Set 5 minute epoxy to glue the stabilizer to the fuselage As the glue dries carefully check the alignment as shown in the diagrams Hinging The Control Surfaces with Sig Easy Hinges Sig s famous EASYHINGES have been included with your Riser kit for hinging the rudder and the elevator Even though they are...

Page 20: ...flection that you will require 5 Place three or four drops of any brand cyanoacrylate adhesive thinnest variety directly onto the EASY HINGE in the gap You will notice that the glue is quickly wicked into the slot as it penetrates both the wood and the hinge Continue this process gluing the same side of all of the hinges Then turn the surfaces over and repeat the gluing process on the other side o...

Page 21: ... structure Have it as smooth as possible before beginning to iron 3 Tack down at several places along the outside edge Next seal the entire edge of the structure Don t try to shrink the covering tight until later NOTE Wipe surface of iron periodically to remove any colored adhesive that may ooze from the covering material 4 a Trim off the excess with a razor blade or a modeling knife b Seal the lo...

Page 22: ...w the manufacturer s instructions supplied with your radio Mounting Servos In The Fuselage The rudder and elevator servos should be mounted side by side in the wing opening so that the output arms are lined up with the ends of the nylon pushrods Screw the servos to hardwood mounting rails that are epoxied across the inside of the fuselage We recommend that the hardwood mounting rails be made of 3 ...

Page 23: ...the aft end or run out of the top hatch and connected to a straight pin on the fin using a small rubber band The switch can be mounted directly on the fuselage side locate it so that you won t accidentally touch it during launch If you prefer the switch can be mounted internally as shown in the photo Use a short piece of music wire poked through the fuselage side to activate the internal switch La...

Page 24: ...ttempt to fly the model with the balance point too far back which could make the model unstable and uncontrollable OPTIONAL RISER POWER POD An alternative to the high start or winch is to use one of these easy to build Sig Power Pods The pod s main advantage is that it requires much less room than the other launching devices You can mount any reed valve or rotary valve 049 051 engine not included ...

Page 25: ...ss of the sailplane being flown a two meter class or standard class hi start is recommended for the RISER The standard class high start usually consists of 100 feet of rubber surgical tubing and 350 feet of nylon cord although some brands may differ slightly The surgical tubing is fastened to a stake pounded into the ground The other end of the tubing is then tied to the nylon cord while the other...

Page 26: ...he hill This upward rising air is the lift we use to soar on Wind velocity and the amount of slope in the hill will determine the amount of lift generated by a particular site The amount of lift can also be affected by obstructions such as trees buildings etc So try to pick a hill with a long smooth approach to it that is free of obstructions Although there are many special aerobatic slope soaring...

Page 27: ...pm Central Copyright SIG Mfg Co Inc SIG MFG CO INC Montezuma Iowa 50171 0520 LIMIT OF LIABILITY In use of our products Sig Mfg Co s only obligation shall be to replace such quantity of the product proven to be defective User shall determine the suitability of the product for his or her intended use and shall assume all risk and liability in connection therewith ...