GRAUPNER ASW 28 Instructions Manual Download Page 20

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY 

Modifications reserved. No liability for printing errors.   Ident. # 0062067    4/2010 

20 

Camber-changing flaps 

 

 

10 mm down 

 
During out test-flights with the ASW 28 using the retractable power system, we found 
that  it  was  advisable  to  mix  in  3  mm  of  up-elevator  and  3  mm  of  down-flap  when 
power was applied for take-off and climb. 
The stated control surface travels are only a recommendation, and you will probably 
want to adjust them to suit your personal flying style. 
 
 

Important:

 

When  installing  and  setting  up  the  control  surface  linkages  it  is  vital  to  ensure  that 
they work smoothly, are able to carry out their full movement - including trim travel - 
without being impeded, and are not mechanically obstructed at any point. 
When  you  move  the  rudder  stick  to  the  right,  the  rudder  should  also  deflect  to  the 
right (left stick: left rudder). If you pull the elevator stick back towards you, the eleva-
tor should deflect up (stick forward: elevator down). 
Move  the  aileron  stick  to  the  right, and  the  right-hand aileron  should  deflect  up, the 
left-hand aileron down. The airbrakes should extend out of the wings when the throt-
tle stick (ratchet action) is moved back towards you, and close at the opposite end-
point. 
For “thermal” and “speed” flying we recommend that you assign the wing flap settings 
to a three-position toggle switch: “switch forward” equates to “speed”, “switch centre” 
means “normal flying”, while “switch back” selects the “thermal” setting. 
Do not extend the airbrakes too far too quickly, as they are extremely effective. For a 
normal landing approach they only need to be extended by around 5 mm. 
 
Now  all  that  remains  is  for  all  of  us to  wish  you  many  hours of  pleasure flying  your 
new ASW 28. 
 
Yours - the                                team ! 
 
 

Be sure to read right through the instructions covering assembly and operation 
of your model before you attempt to operate it for the first time. You alone are 
responsible for the safe operation of your radio-controlled model. Young peo-
ple should only be permitted to build and fly  this model under the instruction 
and supervision of an adult who is aware of the hazards involved in this activ-
ity. 
If  you  have  questions  regarding  the  safe operation  of  your  RC  model  aircraft, 
please  turn  to  your  local  model  shop  in  the  first  instance,  as  the  staff  will  be 
pleased to help you. 
 
Radio-controlled model aircraft are very demanding and potentially dangerous 
machines,  and  call  for  a  high  level  of  technical  knowledge  and  skill  from  the 
operator, together with a responsible attitude. 
 
In  legal  terms  our  models  are  classed  as  aircraft,  and  as  such  are  subject  to 
statutory  regulations  and  restrictions  which  must  be  observed.  Our  brochure 
“Modellflugrecht,  Paragrafen  und  mehr”  (Model  Aviation  Law,  Legal  Require-

Summary of Contents for ASW 28

Page 1: ...TECK GERMANY Modifications reserved No liability for printing errors Ident 0062067 4 2010 1 Order No 9451 Instructions ASW 28 Model glider for slope soaring and aero tow This model requires at least...

Page 2: ...ons before starting work on the model Bear in mind the hazards involved in the use of tools Before making any glued joints be sure to clean the surfaces and remove all traces of grease We recommend sa...

Page 3: ...ape measure or metre rule household scis sors sharp narrow bladed knife e g balsa knife Order No 980 small electric drill set of twist drills allen keys syringe Order No 739 3 Gluing different materia...

Page 4: ...c 19 to the mc 24 or Recommended servos Rudder DES 657 BB MG Order No 7923 1 reqd Elevator DES 587 BB MG Order No 7932 1 reqd Ailerons DS 3068 Order No 5188 2 reqd Camber changing flaps DS 3068 Order...

Page 5: ...understanding of the purpose of the various components and the in dividual stages of construction If you are not satisfied with the quality of any part take it back to your model shop for replacement...

Page 6: ...m the front Check that the wheel doors open and close smoothly you may need to sand back the edges slightly to avoid them fouling the opening At this stage the two formers which support the retractabl...

Page 7: ...ard the wheel door closing springs can be installed Bend two torsion springs to the shape shown in the photo one right and one left handed pair The torsion springs should be about 15 mm shorter than t...

Page 8: ...o and the retract servo on the retract unit as shown in the photos below The retract pushrod is assembled and installed as shown in the photo Adjust the retract linkage so that the wheel locks reliabl...

Page 9: ...osition of the hole for the rudder horn as shown in the photo centred on the pushrod shrouds The exact position of the hole through the rudder is dictated by the horn lugs the linkage point of the hor...

Page 10: ...ended servo output arm using ring screws nuts and clevises Connect an extension lead Order No 3935 180 to the elevator servo lead and fit a heat shrink sleeve round the connector to prevent it workin...

Page 11: ...g now has to be cut in the trailing edge of the fin to accommodate the ele vator pushrod Drill and file it to shape as shown in the photo below Note that the pushrod should rest lightly against the in...

Page 12: ...power unit a tailwheel needs to be installed If you are fitting a tailwheel drill a 2 mm hole in both sides of the fairing positioned as stated in the photo below The tailwheel is installed using a st...

Page 13: ...4 mm Slip a length of 2 mm steel rod through the 10 mm hole in the fuselage nose and through the hole in the fuselage flange so that it engages in the 4 mm deep hole in the canopy frame Tape the cano...

Page 14: ...at right angles just aft of the rear opening and snip off excess length leaving the bent end about 5 mm long If your model is to be fitted with a retractable motor the canopy latch must be in stalled...

Page 15: ...he rear retract unit former When the motor is retracted the two doors are closed again by means of two torsion springs End stops for the doors have to be glued to the inside of the fuselage at both en...

Page 16: ...of M2 5 studding threaded rod two M2 5 nuts and two M2 5 clevises The airbrake servos and camber changing flaps are glued into the wing as shown in the photos below When fitting the airbrake servos en...

Page 17: ...s quite thin at this point You will need to relieve the sealing lip of the camber changing flap slightly to allow the clevis to be connected as shown in the photo Allow the epoxy to set hard then glue...

Page 18: ...o In this case the positive wires from each servo lead are bundled together and sol dered to one outer contact of the plug or socket Repeat the procedure with all the negative wires and a second conta...

Page 19: ...ne rests squarely on the saddle with no movement don t overtighten them Engage the wing retainer system to clamp the wings against the fuselage Insert the front canopy locating peg then push the latch...

Page 20: ...we recommend that you assign the wing flap settings to a three position toggle switch switch forward equates to speed switch centre means normal flying while switch back selects the thermal setting D...

Page 21: ...b into a full size sailplane and try to fly it without completing a course of training first Model flying is just such a skill and has to be learned in exactly the same way However as manufacturers we...

Page 22: ...ip Wear high grip shoes such as trainers Satisfy yourself that your frequency is vacant before you switch on Radio in terference caused by unknown sources can occur at any time without warning If this...

Page 23: ...harge due to their construction 4 Warning The charge process must be supervised even if you are using a fully automatic charger Note the maximum permissible charge current printed on the pack or in di...

Page 24: ...ability for loss damage or costs which are incurred due to the incompetent or incorrect use and operation of our products or which are connected with such opera tion in any way Unless otherwise prescr...

Page 25: ...proof of purchase e g invoice receipt delivery note and this guarantee card He must send the defective goods to us at his own cost using the address stated above The purchaser should state the materi...

Page 26: ...nd storing it Do not subject the model to dirty or cold conditions or high levels of humidity or heat Secure the model and your RC equipment carefully when transporting them They may be seriously dama...

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