Estes #1908  Scrambler:2

INSTRUCTIONS
-------------------------------------------------
1. Mark one end of the BT-55 tube BOTTOM, and the
other end as the TOP.

2. Mark the main body tube for three fins and the
launch lugs. The lug line should be full-length
of the body. Mark the lug line 2" and 11" from the
BOTTOM of the tube.

3. Clean the flash from the nose cone and the
transition.

4. Glue the BT-60R onto the transition. Do not glue
the nose cone in place.

5. Cut the fins and the standoffs from the balsa
sheet. Round all edges of the fins except the root
edge. Round the leading and trailing edges of the
lug standoffs. Do not sand the root and lug edges.
Sand the faces of the fins with fine-grain sandpaper
to remove any raised grain.

6. Mark one end of the BT-50 motor tube as the BOTTOM,
and the other end as the TOP. Draw lines around the
tube at 1" and 2.5" from the BOTTOM.

7. Cut a slit wide enough for the engine hook tip to
fit into on the TOP side of the 2.5" line.

8. Notch the inside diameters of the CR-5060 rings to
fit around the engine hook. Do not oversize the notches.

9. Slip one end of the engine hook into the slot from
step 7, and allow the length of the hook to trail over
the BOTTOM edge. Slide one of the CR-5060 rings down
from the TOP until the ring is just touching the
BOTTOM of the line at 2.5", with the notch over the
hook. Slide the other ring up from the BOTTOM of the
tube, until the ring just touches the BOTTOM of the
line at 1", also with the notch over the hook. Insert
the CR-2050 ring into the TOP of the motor tube, and
push down with an expended 24mm casing until the ring
just touches the tip of the engine hook. Remove the
casing. Glue all three rings in place and allow to dry
completely.

10. Apply a bead of glue inside the BOTTOM end of the
main tube, about 2" up from the edge, and use a small
artists brush to ensure a complete bead around the inside
of the tube. Slide the TOP of the motor tube subassembly
into the BOTTOM of the main body tube, until the BOTTOM
of the motor tube is flush with the BOTTOM of the main
tube. Apply a bead of glue to the BT-60/CR-5560 ring joint
visible from the BOTTOM, and allow to dry completely.

11. Assemble both parachutes and attach the shroud lines
of each to one of the snap links.

12. Attach one end of the shock chord to the TOP-INSIDE
of the main body using a folded-paper mount, at least 2"
down from the edge to allow for the transition shoulder.

13. Attach the fins to the main body using Stine's double-
glue method. The BOTTOM of the root edge is flush with the
BOTTOM of the body tube. Attach the lower standoff below the
2" mark on the lug line. Attach the upper standoff above
the 11" mark on the lug line.

14. Form a loop in the free end of the shock chord, and
reinforce the joint with a strip of paper, glued. When dry,
attach the 12" parachute to the shock chord.

15. Attach the 18" parachute to the bottom of the transition.
Do not attach the two sections of the rocket together. They
should come down separately.

16. Fill the grain of the balsa and sand, repeating this step
until the surface of the wood is smooth. Prime the entire
rocket with your favorite system, and sand between layers,
repeating as nescessary. Paint with your favorite color system,
using the pattern in the 1983 and 1984 Estes catalogs. The
colors are yellow and black. When the paint has dried, seal
with clear gloss acrylic spray. Apply any decals and seal
with another coat of clear gloss acrylic.

17. Fly with D12-5 (for apogee deployment) or D12-7 (for
delayed deployment).