LASER ARTS QF-2 DLG Assembly Manual Download Page 22

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Copyright 2005 Laser Arts 

2.

 

Make sure your servos fit on the servo plate, them wrap your servos in masking tape to make it easier to remove or replace them if 
you need to. After this, secure them to the servo plate using hot glue or thick CA, making sure that everything fits over the plate. 

 

3.

 

Add Z-Bends to one end of the pushrod wires. Make sure they are as tight as possible without binding. If they are loose, there will 
be slop in your control linkages, which you do not want. 

4.

 

Plug in your servos and turn on your radio, making sure the trims are centered and adjust your control horns to make sure they are 
vertical. Insert the Z-bends in the pushrods into the control horns. 

5.

 

Insert the other ends of the pushrod through the pushrod housings and out the back. 

6.

 

Glue down the servo plate into the fuselage using hot glue. You can also use some strong thin double sided tape to hold it down. 

7.

 

Pull the pushrod tight to the control horn and glue down the pushrod housing to the boom using this CA. MAKE SURE you do not 
get any glue inside or on the pushrod wire. You can use thin CA to tack it down every few inches. If you are using shorter pieces of 
pushrod housing, be VERY CAREFUL not to get glue into the housings or on the wire since there are more openings. Space the 
pushrod housings evenly out to the back with the last one being about 1” in front of the control horns. Check that the wire moves 
freely each time you tack glue the housing down. 

8.

 

Trim the wires about ¼” or so in front of the control horns. 

9.

 

Cut 2 lengths of wire, about 1-1/2” long. Make a Z-bend on the end of each of them. Make sure that the Z-bends are tight and 
small. There should be plenty of wire left if you need to try it a few times to get them right. 

10.

 

Slide one length of shrink tube over the ends of the pushrod wire. Insert the short Z-bend wire into the control horn. Slide the 
shrink tube over the wires to hold them together. Turn on your radio and make sure trims are still centered and control surface is 
flat and shrink the tubing using a soldering iron. Add a drop of thin CA to each end of the tube. Repeat this for the other pushrod. 

 

RADIO INSTALL: 

 

1.

 

There is plenty of room in the fuselage to accommodate most mini/micro receivers. We suggest using a 4 cell AAA 300 MAh 
NiMH battery for the receiver battery. To save weight, plug the battery directly into the receiver, making sure it is oriented 
properly. 

2.

 

Install your battery and receiver so that the model balances where it is shown on the plans. A good place to start is on the rear of the 
wing spar. Adjust it from there after flying, depending on your flying style. 

3.

 

Use tape to hold down the aft of the canopy hatch. The angled cut in the front should be enough to hold the front end down. If you 
wish, you can use some scrap balsa to make a tongue to further hold it down. 

 

FLYING: 

 

1.

 

Double check the wing hold down mounts in the fuselage, the wing bolts, and tail surface every time you go out to fly. If there is 
any damage or wear, repair it before flying. 

2.

 

Don’t forget to charge your receiver battery! It’s not fun showing up at the field with a dead battery … 

3.

 

Pick a day with little or no winds for your first flight. 

4.

 

Make sure the controls are working smoothly and in the right direction. 

5.

 

Give your QF2 a light toss into the wind (if any). Adjust the rudder and elevator trims to get a nice straight glide. From about 6’ 
high, you should get a glide of 60 to 80 feet (or more). 

6.

 

Gradually increase the strength of your throws to get the model properly trimmed and some longer glides/flights out of it. When 
you’re ready, move onto discus launching with it. 

7.

 

For Discus launching, start out with gentle launches and gradually increase to stronger launches. There is a right way to grip the 
launch peg when discus launching. Your index finger goes on top and the rest of your fingers go below the wing and use the first 
joints in your fingers (or just in front of) to grip the peg. Do NOT use the second finger joints because it will mess up your 
launches. Do NOT hold the plane level by the throwing peg; let it hang down a bit as you start to spin. As you spin, it will come up 
quickly. When you release, do NOT try to give it extra force by bending your elbow forward. Instead of helping, it will hurt your 
launch and possibly cause it to “hook” sideways … and it wasn’t designed to knife edge close to the ground! 

8.

 

After you release, the plane should climb quickly and straighten out almost immediately. If it “hooks” or tries to “knife edge”, then 
you are releasing it too early, too late, or hooking your elbow. 

9.

 

When the plane begins slowing, push over to level out before it stalls. You want to have a little energy to move out, but not too 
much that you waste your launch height. 

Summary of Contents for QF-2 DLG

Page 1: ...ARTS www LaserArts com QF 2 DLG 50 Built up Discus Launch Glider Span 50 Wing Area 1 88 sq ft Weight 6 5 to 7 5 oz Wing Loading 3 46 to 4 0 oz sq ft Designed by Paul Daniels Kit by Laser Arts Instruct...

Page 2: ...erglass Cloth 2 ea x 50 CF Uni Web 1 ea x 20 CF Uni Web Recommended Items for Finishing 1 1 Roll Lightweight Covering So Lite or Similar 2 Epoxy Finishing Resin or water based Minwax Polycrylic Sugges...

Page 3: ...put into the design You ll also find building tips and a place to ask questions if you get stuck anywhere or want to chat with him or myself Please let us know about your experiences building and fly...

Page 4: ...3 Glue the 1 8 balsa formers F2 F3 F4 and F5 onto one fuselage side making sure they are 90 degrees to the fuselage side Make sure that the notch in F2 is facing UP the slots in F3 are towards the TOP...

Page 5: ...bottom is flush with the bottom of the fuselage sides Make sure you clean up any excess glue that seeped out 7 Glue the 1 8 balsa bottom to the fuselage assembly as shown below If there is a little e...

Page 6: ...nforcements as shown on the plan as the images below 11 Glue into place the triangle stock HORIZONTAL reinforcements as shown in the images below and on the plan 12 Glue 2 of the 1 8 balsa FRONT wing...

Page 7: ...piece Glue the CF strip to one side of the elevator as shown below 3 Skew the oz fiberglass to a bias as shown in the image below About 30 to 40 degrees from vertical This makes the finished parts st...

Page 8: ...evator 7 Sand a 45 degree bevel on the leading edge of the rudder It DOES matter which side you sand The tape hinge will be on the right side if you are right handed and on the left side if you are le...

Page 9: ...boom stronger Make sure the boom is dried before continuing 17 Glue the stab to the boom with the leading edge of the stab 5 5 16 forward of the boom end the smaller end of the boom We recommend using...

Page 10: ...section of the boom with WET sandpaper so the glue bond will be stronger After it has dried completely continue 4 Insert the boom assembly into the fuselage but do NOT glue it yet The boom should be...

Page 11: ...s You can also use scrap balsa to make a fairing on the rear of the fuselage if you want to but this is not necessary 5 Cut the canopy block at a 45 degree angle from back to front about from the fron...

Page 12: ...dried cut off the excess cloth using a sharp Exacto blade BUILDING THE WING 1 Remove the 3 32 and 1 8 wing braces from their sheets 2 Cut the remaining CF strip from the 24 piece into 4 separate 5 pi...

Page 13: ...with each other Glue the 2 larger 1 8 balsa rectangle pieces together Shown in the image below making sure they are flush 7 Lay out the plans on the workbench over a surface that you can press pins in...

Page 14: ...are flat behind the spar the ribs are vertical and pressed all the way onto the spar 12 Press the trailing edge into place starting with the outside trailing edge piece then the inside as shown in th...

Page 15: ...heeting and glue it to the ribs with thin CA making sure it is fully against the ribs You can do this as shown in the image below by using two finger to raise the sheeting on either side of the rib an...

Page 16: ...webs to make sure they are flush with the top spar This makes sure that the top wing sheeting will lie down properly on top of the spar Remove the wings from the building board 21 We will shape the t...

Page 17: ...ED UP PROPERLY Dry test fit everything before gluing anything Mix up some 30 minute epoxy Add some epoxy to the top and bottom of the laminated center balsa joiner and slide the left wing onto it Spre...

Page 18: ...Glue the larger of the laminated rectangles into place as shown in the image below making sure it is flush with the front and rear wing braces Make sure the center section is flat while gluing these i...

Page 19: ...e sheeting to the ribs by pressing the sheeting down and dripping thin CA down from the front MAKE sure you don t glue your fingers to the wing as some thin CA may come through the slots in the sheeti...

Page 20: ...s to make sure it stays up against the sheeting and stays smooth 43 Apply the other 50 length of CF to the bottom of the wing the same way as you did the top one continuous piece from wingtip to wingt...

Page 21: ...Make sure you glue it in VERY well as you did for the front wing mount block CONTROL WIRE INSTALLATION 1 There are a couple different things you can do for the pushrod housing You can use a continuous...

Page 22: ...300 MAh NiMH battery for the receiver battery To save weight plug the battery directly into the receiver making sure it is oriented properly 2 Install your battery and receiver so that the model bala...

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