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Use a soldering iron to cut the covering from the stab.
The tip of the soldering iron doesn't have to be sharp, but
a fine tip does work best. Allow the iron to heat fully.
Use a straightedge to guide the soldering iron at a rate
that  will  just  melt  the  covering  and  not  burn  into  the
wood. The  hotter  the  soldering  iron,  the  faster  it  must
travel to melt a fine cut. Peel off the covering.

6. Glue the plywood wing bolt plate to the wing.

7. From the top of the wing, drill through the two

wing bolt holes and through the plywood wing bolt
plate using a 5/32” [4mm] drill bit.

8. Mount the wing to the fuselage with two 4 x 35mm

[1-3/8”] machine screws and two 4mm washers.

9.  Cut  the  covering  from  the  wing  bolt  holes  in

the 

belly pan

. Place the belly pan onto the bottom of

the  wing,  aligning  it  with  the  fuselage.  Mark  the
outline of the belly pan onto the fuselage with a fine-
tip, felt-tip marker.

10. Just inside the lines you have made, cut away a

1/4” [6mm] strip of covering. Remove a 1/4” [6mm] strip
from the front and rear of the wing as well.

11. Glue the belly pan to the wing. Tape the belly

pan  in  place  while  the  glue  cures.  Once  cured,
remove the wing from the fuselage.

12.  If  you  will  be  using  a  “Y”  harness  for  the

ailerons, attach the “Y” harness to the aileron servos.
Secure the connectors together using a large piece of
heat shrink tubing, tape or other method. 

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How to cut covering from balsa

10

Содержание SUKHOI SU31 .50-.91 ARF

Страница 1: ...r of the final user assembled product By the act of using the user assembled product the user accepts all resulting liability If the buyer is not prepared to accept the liability associated with the u...

Страница 2: ...g the AMA provides many benefits one of the primary reasons to join is liability protection Coverage is not limited to flying at contests or on the club field It even applies to flying at public demon...

Страница 3: ...to end up with a well built model This is a partial list of items required to finish the Hobbico Sukhoi SU31 that may require planning or decision making before starting to build Order numbers are pr...

Страница 4: ...xy is specified you may use either 30 minute or 45 minute epoxy or 6 minute epoxy When 30 minute epoxy is specified it is highly recommended that you use only 30 minute or 45 minute epoxy because you...

Страница 5: ...Canopy 11 Right wing 12 Stab elevators 13 Fin Rudder 14 Engine Mount Qty 2 15x15x15mm hardwood block 2 15x15x10mm hardwood block 2 155mm length of Velcro 2 3mm plywood wing joiner 1 Plywood wing bolt...

Страница 6: ...by telephone at 217 398 8970 Order Number Description How to purchase HCAA3630 Wing Hobby Supplier HCAA3631 Fuse belly pan Hobby Supplier HCAA3633 Tail Surfaces Hobby Supplier HCAA3632 Cowl Hobby Supp...

Страница 7: ...rvos in the wing will require the use of one 6 152mm servo extension for each aileron One Y harness connector is required and is used to allow the aileron servos to plug into one slot in your receiver...

Страница 8: ...Install a silicone clevis keeper onto the clevis and then install the clevis in the second hole from the end of the aileron control horn 6 Be sure the aileron servo is centered Enlarge the second oute...

Страница 9: ...center of the wing as measured at the wing tip should be approximately 2 3 8 60mm Block the wingtip up while the glue cures Note Due to production techniques there may be some variance in the actual d...

Страница 10: ...35mm 1 3 8 machine screws and two 4mm washers 9 Cut the covering from the wing bolt holes in the belly pan Place the belly pan onto the bottom of the wing aligning it with the fuselage Mark the outlin...

Страница 11: ...ab use a fine felt tip marker and trace the outline of the fuselage onto the top and bottom of the stab Cut the center section of the covering from the top and bottom of the stab using the same techni...

Страница 12: ...res 9 Insert three hinges into the rudder Then slide the rudder onto the fin Apply thin CA onto the hinges the same as was done with the other control surfaces This completes the installation of the t...

Страница 13: ...he flange to the fuselage with three 2 x 7mm 5 16 sheet metal screws INSTALL ENGINE FUEL TANK THROTTLE SERVO 1 The top of the engine mount can be identified by the angled bevel Be sure when mounting t...

Страница 14: ...e hole threading it into the 4mm blind nut Tighten the bolt until the blind nut is pulled tight against the backside of the firewall Remove the bolt and repeat this for each of the three remaining hol...

Страница 15: ...blocks For the top mounting block measure from the front of the fuselage back 1 5 8 40mm and make a line Measure up from the bottom of the fuselage 3 1 2 89mm and make a line intersecting the other li...

Страница 16: ...e of drops of thin CA into each of the screw holes to harden the threads Allow the glue to cure 6 Re install the cowl onto the front of the fuselage On the cowl mark the location for the glow plug nee...

Страница 17: ...he aileron with two 2 x 15mm 5 8 machine screws and the nylon mounting plate 4 Insert the third rod into the remaining opening on the left side of the fuselage Connect the control horn to the clevis a...

Страница 18: ...the outermost hole in the servo arm with a Hobbico Servo Horn Drill or a 48 or 5 64 2mm drill bit Center the elevators and align the wire pushrod with the hole in the end of the servo arm Using a mark...

Страница 19: ...ary SET THE CONTROL THROWS Use a Great Planes AccuThrow or a ruler to accurately measure and set the control throw of each control surface as indicated in the chart that follows If your radio does not...

Страница 20: ...weight may be added by cutting open the bottom of the fuse and gluing it permanently inside Note Do not rely upon the adhesive on the back of the lead weight to permanently hold it in place Over time...

Страница 21: ...with disastrous effect but vibration may also damage your radio receiver and battery Vibration can also cause your fuel to foam which will in turn cause your engine to run hot or quit We use a Top Fli...

Страница 22: ...ing demonstrations until it has been proven to be airworthy by having been previously successfully flight tested 2 I will not fly my model aircraft higher than approximately 400 feet within 3 miles of...

Страница 23: ...s a great flying model that flies smoothly and predictably The Hobbico Sukhoi does not however possess the self recovery characteristics of a primary R C trainer and should be flown only by experience...

Страница 24: ...altitude with plenty of fuel practice slow flight and execute practice landing approaches by reducing the throttle to see how the model handles at slower speeds Add power to see how she climbs as well...

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