NORTH COAST ROCKETRY HyperSwift SR-99 User manual

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!
SR-99 HyperSwift™
Flying Model Rocket Instructions
Designed by Matt Steele
VEHICLE DATA SHEET
Physical Data
Predicted Altitudes
Parameter' Dimension'
"#$%&'! ()*!+,-!./0!
123/#&#4! 567-*!+76)!./0!
8#2%'&! 9:6;<=!+-:>!%0!
Motor' Predicted'Al2tude'
?@&#@!?9:A-! :9-!B!+9:7!/0!
?@&#@!C9:A-! ;-;!B!+5:;!/0!
D#4<&#.'!C57A7CE! 9F59:!B!+()>!/0!
D#4<&#.'!C:>A7G! 9F9):!B!+(:)!/0!
D#4<&#.'!H->A9>8! 9F7;5!B!+:95!/0!
D#4<&#.'!H;>A9>G! 5F9(7!B!+7:9!/0!
• This kit is recommended for adults(18 and older) only. Launch systems, model rocket motors, launch supplies, tools, and building
materials are not included.
• Do not modify the design of the rocket! Changes to the design may affect the stability, and hence, the safety of the rocket.
• North Coast Rocketry certifies that it has exercised reasonable care in the design and manufacture of its products. However, as we
cannot control the use of our products once sold, we cannot assume any responsibility or liability for product usage.
• North Coast rocketry shall not be held responsible for personal injury or property damage resulting from the use of our product. The
buyer assumes all risks and liabilities arising from the use of our product and uses our product on these conditions.
• North Coast Rocketry makes no warranty regarding our products, except for defects in materials or workmanship for a period of one
year after purchase.
• If any of these terms are unacceptable, please return the item to the point of purchase.
NCR 9200 (9/15)

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!
Parts List
ID Part # Description
A 3001 Nose Cone
B 1108 Main Airframe Tube
C 1107 Motor Tube
D 2102 Forward Centering Ring
E 2103 Aft Centering Ring
F 7200-1, -2 SR-99 Fin Set (3 pcs)
G 1114 Ramjet Tubes (2)
H 7200-3, -4 SR-99 Assembly Jig (3 pcs)
I 9506 Wood Strip
J 9529 Cable
K 9503 Loop Sleeve Connectors (2)
L 9530 Kevlar Line
M 9531 Elastic Line
N 9501 Launch Lugs (4)
O 9508 Shrink Tube (2 )
P 9526 Quick Link
Q 8200, 8201,
8212-8215
SR-99 Decal Set
Before You Start:
Thank you for purchasing this North Coast Rocketry® model kit. We hope you
have an enjoyable time constructing and flying this model rocket. Please read all
of these instructions to become familiar with them before starting construction. The
sequence is important. Check off each step as it is completed.
The following materials are necessary for construction:
5 minute epoxy; 15 or 30 minute epoxy; gap filling (thick) cyanoacrylate adhesive
(CA); balsa filler coat; ¾” wide masking tape, an 18” (45.7 cm) wood dowel; a
sanding block with #220, #320 and #400 sandpaper; spray primer; and spray paint
in the color(s) of your choice.
The following tools are required for construction:
Modeling knife or single edge razor blade; pliers or crimping tool; safety glasses;
and an 18” long ruler.
Check the kit for completeness, using the parts list and reference photograph. If
parts are missing or damaged, or if or any reason you are dissatisfied with this
product, please let us know at www.NorthCoastRocketry.com. We will gladly
replace any item found to be defective. Our goal is for you to be satisfied with your
purchase, and to have fun!
Please be extremely careful using CA and epoxy. Avoid getting either in your eyes
or on your skin. Use safety glasses when using adhesives and when cutting. Be
sure to use adhesives and paints only in areas with adequate ventilation, and do
not breathe in fumes.
In each step, test fit parts together before bonding. It is sometimes necessary to
sand lightly or build up some parts to obtain a precision fit.
Plywood parts, being natural wood products, have a tendency to warp. Reverse
any warps by lightly misting the part’s concave side, then placing it between two
heavy, flat objects to dry. Seal the part with balsa fillercoat or spray primer as soon
as possible afterwards.
B
A
C
D
E
F
H
I
J
K
L
MN
O
Q
P
G

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!
Before You Start…
Thank you for purchasing this North Coast
Rocketry® model kit. We hope you have an
enjoyable time constructing and flying this model
rocket.
Please read all of these instructions to become
familiar with them before starting construction. The
sequence is important. Check off each step as it is
completed.
The following materials are necessary for
construction:
5 minute epoxy; 15 or 30 minute epoxy; gap filling
(thick) cyanoacrylate adhesive (CA); balsa filler
coat; ¾” wide masking tape; an 12” wood dowel or
stick; wax paper; a sanding block with #220, #320
and #400 sandpaper; spray primer; and spray
paint in the color(s) of your choice.
The following tools are required for
construction:
Modeling knife or single edge razor blade; pliers or
crimping tool; heat gun; safety glasses; and an 18”
long ruler.
Check the kit for completeness, using the parts list
and reference photograph. If parts are missing or
damaged, or if or any reason you are dissatisfied
with this product, please let us know at
www.NorthCoastRocketry.com. We will gladly
replace any item found to be defective. Our goal is
for you to be satisfied with your purchase, and to
have fun!
Please be extremely careful using CA and epoxy.
Avoid getting either in your eyes or on your skin.
Use safety glasses when using adhesives and
when cutting. Be sure to use adhesives and paints
only in areas with adequate ventilation, and do not
breathe in fumes.
In each step, test fit parts together before bonding.
It is sometimes necessary to sand lightly or build
up some parts to obtain a precision fit.
Plywood parts, being natural wood products, have
a tendency to warp. Reverse any warps by lightly
misting the part’s concave side, then placing it
between two heavy, flat objects to dry. Seal the
part with balsa fillercoat or spray primer as soon
as possible afterwards.
3
Assembly Instructions
□Mark the motor tube ½” from each end. This is
where the centering rings will bonded to the motor
tube. Test fit each ring on the motor tube and body
tube to ensure they fit properly. Sand the rings if the
fit is too tight; add tape to the motor tube if that joint
is too loose.
□Locate the forward centering ring (the one with
the two holes in it) and slide it onto the motor tube
to one of the ½” marks. Using CA or epoxy, bond
the ring in place.
□Locate the aft centering ring and slide it onto the
motor tube to the other ½” mark. Using CA or epoxy,
bond the ring in place.
□Locate the steel cable and the one of the loop/
sleeve connectors. Thread one of the loop/sleeve
connectors on to the cable. Then, thread the cable
down through the top of one hole in the centering
ring. Pull it back through the other hole and thread
the end of the cable back through the loop/sleeve
connector. Crimp the loop/sleeve connector with a
crimping tool or a pair of pliers. Apply a drop of CA
to the joint.

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!
□Slide both of the heat shrink sections onto the
cable. Place the other loop/sleeve connector on
the free end of the cable. Make a 1-2” diameter
loop and thread the free end back through the
loop/sleeve connector. Crimp the loop/sleeve
connector with a crimping tool or a pair of pliers.
Apply a drop of CA to the connector.
□Slide the heat shrink tubing over each loop
sleeve connector, and, using a heat gun or hair
dryer, shrink the tubing over the connector to
prevent the parachute from snagging on it.
□Tie one end of the aramid shock line onto the
top cable loop and triple knot it. Secure the knot
with a drop of CA. Trim the excess off.
□Tie one end of the elastic shock line onto the
top cable loop and triple knot it. Trim the excess
off.
4
□Coil up both the aramid and elastic shock lines
and stuff them into the forward end of the motor
tube. This will keep them out of the way when then
motor mount is bonded in place.
□Test fit the motor mount assembly into the main
airframe tube. Check to see that the motor mount
fits snugly. Remove the motor mount.
□Mark a long stick or dowel 8” from one end. This
will be used to apply epoxy to the forward ring/
airframe tube joint. Mix a large batch of epoxy (For
best results, used 15 or 30 minute epoxy). Spread a
band of epoxy inside the tube about 8” from the aft
end of the airframe tube. Insert the motor mount
assembly until the end of the motor tube is flush
with the end of the airframe tube. Set the assembly
upright on a sheet of wax paper to fully cure.
□Mark a line the entire length of the airframe tube.
Fillet the aft ring/airframe tube joint with epoxy.
□Locate the wing – note that it has a laser marked
centerline. The side with the line is the top of the
wing. Round the leading edge of the wing and wing
tips with coarse #100 grit sandpaper. Leave the root
edge of the fin tips and the outside edges of the
wings flat. Fine sand the parts with #180, #220,
#320, and #400 sandpaper. Be sure not to sand
away the alignment line on the top of the wing.
Plywood is a natural wood product; as such, we can
not control factors such as warping after it leaves
our facility. If your plywood parts are warped, place
them under a stack of books for 24-48 hours to
flatten them.

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!5
□Bond the wing tips onto the wing on a sheet of
wax paper. Ensure that the wing tips are
perpendicular to the wing. Fillet with “inside” of the
joints with epoxy.
□It is a good idea to sand and seal the wing
assembly prior to bonding it on the airframe. On
the underside of the wing, cover the bond area
with a strip of ½” wide masking tape. The wing
assembly can best be sealed with finishing epoxy,
balsa filler coat, or primer paint. Apply a coat of
filler, sand smooth, and repeat the process until
the wood grain is filled and the surfaces are
smooth.
□Mark the aft end of the airframe tube ½” from
the aft end, all the way around the tube. This will
help align the wing assembly and the ramjet
tubes.
□Glue together the assembly jig as shown
below.
□Insert the two ramjet tubes into the jig.
□Place the main airframe tube on jig. Align the
ramjet tubes even with the ½” mark on the airframe
tube. Using CA, glue the ramjet tubes to the
airframe. After the CA has set, remove the
assembly from the jig and fillet the ramjet tube/
airframe tube joints with epoxy. Replace the
assembly in the jig.
□Test fit the wing on the airframe assembly. Align
the aft edge of the wing with the ½” alignment mark
on the airframe tube. Using epoxy, bond the wing in
place.