DynaStar Grappler Manuel - Page 2

Parcourez en ligne ou téléchargez le pdf Manuel pour {nom_de_la_catégorie} DynaStar Grappler. DynaStar Grappler 8 pages. Mid-power model rockets

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Grappler Rocket Assembly

1. Using 400 grit sandpaper, ﬁne sand the

balsa die-cut sheets before removing the ﬁns.

Carefully remove all the pieces from the balsa

sheet by freeing the edges with a sharp hobby

knife.

2. Group the three ﬁns together, and gently

sand the edges as shown in the illustration.

3. You can apply sanding sealer to the

surfaces of the balsa ﬁns. Coat both sides at

the same time to minimize the chances of the

ﬁns warping. Do not allow the sanding sealer

to get on the root edge of the ﬁn. This could

prevent the ﬁn from bonding well to the body

tube when it is glued on later in step 17. Set

them aside to dry completely. When they are

dry, sand the sealer smooth until you get a de-

sirable surface ﬁnish. You may need to repeat

this step several times depending on the level

of quality you wish to achieve.

4. Mark a line on the outside of the motor

mount tube 2 1/4 inches (57mm) from one

end. This end will be the aft end of the rocket.

Make this line about 1/8 inches (3mm) long as

the picture shows. Take a hobby knife and cut

a 1/8 inches (3mm) long slit in the engine tube

along the line as shown in the picture. Insert

one end of the motor hook into this slit.

5. Make a mark 1 1/2 inches (38.1mm)

from the rear of the engine tube. Locate the

yellow airframe sleeve. Apply a layer of glue

around the tube for a 2 inch length, forward

of the mark that you made. Slide the yellow

sleeve over the engine hook and onto the

engine tube until the rear end of the sleeve is

lined up with the mark. Apply a ﬁllet of glue to

both ends of the sleeve (Be sure that the en-

gine hook remains perpendicular to the engine

tube).

6. Now mark 1 1/8 inches (29mm) from the

rear of the engine tube. Find one of the large

green rings that ﬁts over the 24mm diameter

engine mount tube. Make a thin layer of glue

around the engine tube behind the mark you

made. Take the green ring, slide it over the

engine hook, and then onto the engine tube

until the rear end of the ring is lined up with

the mark you made (Be careful of the hook as

above).

7. Remove one of the three large centering rings

from the die-cut card sheet and apply a bead of

wood glue 71/2 inches (17.8 cm) from the front end

of the engine tube, Slide the cardboard centering

ring into the bead of glue. Check to be sure the ring

is aligned straight on the tube. Allow the glue to dry.

Page

Engine Hook Size

Do NOT use the Estes E9 in this rocket.

It doesn't have enough thrust to safely lift

�

1/8" (3mm)

1-1/8" (29mm)

1-1/2"

7 1/2" (17.8m)

"A" Length

D-Engine

2-1/4" (57mm)

this big rocket kit.

Yellow Sleeve