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Step 48

   Gather the shroud lines together 

and attach them to the swivel end of one of 
the snap links. Attach the swivel end of the 
remaining snap link to the free end of the 
elastic shock chord. Apply a drop of thinned 
glue   to   these   knots   to   secure   them,   and 
allow to dry. Do not attach the parachute to 
the nose cone, or store it in the body tube at 
this time.

Step 49

   Pull the elastic shock chord and 

the excess length of the Kevlar thread back 
through the motor tube and out the front end 
of the main body tube.

Step 50

  Attach the snap link of the shock 

chord to the screw eye in the base of the 
nose cone. Push the shock chord back into 
the body tube, and insert the nose cone into 
the tube.

Step 51

    Remove   the   small   end   pieces 

from   the   rear   of   the   fin   alignment   tool. 
Remove the scrap piece of BT-50 from the 
front   end   pieces.   Slide   the   alignment   tool 
down from the top of the main body tube, 
such   that   the   six   BT-3   tubes   are   pointed 
toward the rear of the model. Rotate the tool 
so that the gap between the tubes is aligned 
directly over the fin attachment areas.

Step 52

   Apply a second layer of glue to 

the one fin attachment area directly below 
the tool, and to the root edge of one main 
fin. Slide the fin into the gap between the 
guide   tubes,   and   press   the   fin   against   the 
body   tube   with   the   trailing   edge   touching 
the   rear   edge   of   the   body   tube,   and   the 
leading edge touching the line at 4”. Slide 
the short end pieces onto the six guide tubes 
to firmly clamp the fin in place. Make any 
adjustments to the position of the fin while 
the glue is still wet. Use a moist brush to 
remove the excess glue from the joint, and 
to   smooth   out   the   remaining   glue   into   a 
fillet.   Allow   about   20   minutes   to   dry. 
Remove the short end pieces, then slide the 
guide   forward   just   enough   to   clear   the 

leading edges of the fin. Rotate the guide, 
and   repeat   this   sequence   for   each   of   the 
remaining three main fins.

Step 53

   Remove the strip of tape from 

one of the pods. Mix up a small quantity of 
20-minute epoxy. Apply a very thin layer of 
epoxy to the tip edge of one main fin, and to 
the exposed area on the pod. Force some of 
the epoxy into the holes. Attach the pod to 
the   fin   tip,   with   the   longer   cone   pointing 
toward   the   front.   Slide   one   of   the   pod 
alignment guides from the rear over the pod, 
with the fin in the slot. Do the same with a 
second guide from the front. Wipe away any 
excess   epoxy   that   squeezes   out   from   the 
joint,   but   do   not   get   any   epoxy   on   the 
guides.   Allow   at   least   two   hours   for   the 
epoxy to cure before removing the guides. 
Repeat this sequence for the remaining three 
pods.

Step 54

   Inspect the main body, fins, and 

pods for glue ridges or other imperfections 
that might show through the primer. Sand, 
apply   filler,   let   dry,   and   sand   again   as 
needed to achieve a level of surface finish 
you are satisfied with.

Step 55

  Apply glue to the two launch lug 

attachment   areas,   and   to   the   two   launch 
lugs, then attach the lugs to the body tube. 
Sight down the two lugs and adjust them as 
needed until they are parallel to the tube and 
in-line   with   each   other.   Wipe   away   the 
excess   glue   with   a   moist   brush,   being 
careful   not   to   disturb   the   position   of   the 
lugs. Allow to dry.

Step 56

  When all of the glue joints have 

dried   completely,   apply   a   second   fillet   of 
glue   to   all   of   the   non-epoxy   joints,   and 
smooth   this   into   a   fillet   with   your   finger. 
This   will   reinforce   the   joint   against   flight 
stresses. Allow to dry.

Finishing

Main Fins and Fin Tip Pods

Summary of Contents for Antares

Page 1: ...ody Tube 4 BT 5BJ Reactor Shroud BT 55J Motor Tube BT 20J Centering Rings 2 CR 2050 Thrust Ring CR 520 Engine Hook EH 2 Main Fin Stock 1 8 Balsa Sheet Cooling Vanes 1 16 Balsa Sheet Launch Lug 2 LL 2...

Page 2: ...Main Fins Make 4 each from 1 8 balsa sheet Reactor Cooling Vanes Make 8 from 1 16 balsa sheet Fin Templates...

Page 3: ...Pieces 2 0 05 Fiberboard RCV AG Connecting Tube BT 5BJ Reactor Cooling Vane Alignment Guide Make 2 from 0 05 fiberboard Make 1 from 0 05 fiberboard Fin Tip Pod Alignment Tool Main Fin Marking Guide M...

Page 4: ...Supports 2 0 05 Fiberboard Sliding Tube Holders 3 0 05 Fiberboard Clamping Tubes 6 BT 3 9 Main Fin Front Support Piece Make 2 from 0 05 fiberboard Main Fin Rear Support Piece Sliding Tube Holder Make...

Page 5: ...Painting Guide...

Page 6: ...nment and make adjustments to ensure that the BT 3 tubes are parallel to each other and to the scrap BT 50 but perpendicular to all of the end pieces Step 4 Apply glue to the joints between the BT 3 t...

Page 7: ...s in the inside diameter as shown in Fig 2 above A sanding twig is an excellent tool for this job Figure 3 Step 17 Modify one of the two CR 2050 rings with two V notches as shown in Fig 3 above Step 1...

Page 8: ...de surface of the shroud and the sides of the vanes with one coat of white or gray primer and allow a day to dry You may sand the primer at this stage but it is not really necessary as it will not eas...

Page 9: ...four fin alignment lines then remove the guide Extend these lines from the rear edge of the tube up to the line drawn at 4 from the edge Step 35 Cut four strips of masking tape 1 8 wide and 4 long Car...

Page 10: ...g attachment areas from the body tube and discard Apply a thin layer of glue to these areas and allow to dry Apply a thin layer of glue to the two launch lugs as well and allow to dry Step 45 Remove t...

Page 11: ...oint and to smooth out the remaining glue into a fillet Allow about 20 minutes to dry Remove the short end pieces then slide the guide forward just enough to clear the leading edges of the fin Rotate...

Page 12: ...d with airbrush medium and water This paint will dry flat and there are no solvent fumes to deal with You should allow at least two full days before masking over the white to prevent the tape from lif...

Page 13: ...seal and a particulate block to protect the parachute with this material Next push the shock chord and the Kevlar thread down on top of the wadding Insert the rolled or folded parachute on top of the...

Page 14: ...om hitting the ground To prevent accidental eye injury I will place launchers so that the end of the launch rod is above eye level or I will cap the end of the rod when it is not in use Size My model...

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