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.

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!
□Trim any flash away from the nose cone with a
sharp knife. Sand lightly with #400 sandpaper
before painting. Tie the aramid line to the nose
cone with a triple knot. Secure the knot with a drop
of CA. Tie the elastic line to the Quick Clip, then
clip the elastic line to the nose cone with a triple
know. Trim away any excess lines. Attach a 24-36”
parachute (not included) to the nose cone.
□Cut six 1” pieces from the wood stick. Cut a 45
degree chamfer on each end of all the pieces.
□Glue the remaining piece of wood to the
airframe assembly. Glue the others on as shown.
□Glue the launch lugs on under the wing at the
aft and leading edges on both sides. Fillet the
joints with epoxy.
□Clean the rocket body with a rag or paper towel.
The rocket may now be painted. Refer to the paint
and decal diagram on the following page.
□Paint the rocket with a base coat of primer and
let it dry. For best results, apply two coats of white
paint before applying the final color coat.
□Apply the decals as desired. Carefully cut out
each decal from the sheet, leaving as little extra
material around the printed portions. Position the
decal on the model, and burnish the decal to stay in
place.
□Spray the entire model with a clear coat to
protect the finish.
6

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!7

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!8

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!9
Flight Preparations
IMPORTANT!
READ BEFORE LAUNCHING!
□Select one of the recommend motors shown on the first
page. For an updated list of recommended motors, check the
kit listing at NorthCoastrocketry.com.
□Install the motor into the motor mount until all but the last ½”
in exposed. Endure the motor is snug in the motor tube, and
that it will not move forward or aft. Using ¾’ wide masking
tape, wrap the aft end of the motor and the motor tube to
secure the motor in place. It is critical that the motor be firmly
retained. If the motor is loose, it may blow out at ejection,
causing the model to crash.
□Remove the nose cone. Check to ensure the shock cord is
securely mounted. Check for any damaged, burnt or frayed
sections of the shock cord and replace if necessary. Unclip the
cord and straighten out any tangles in the line before
reattaching.
□Insert wadding, using an amount at least equal to one
diameter (3” or so) to protect the parachute.
□Carefully fold the parachute. Insert the shock cord into the
model, followed by the parachute. The sequence is very
important! Replace the nose cone. Ensure the nose cone is
snug, but slides freely.
□Install the igniter per manufacturer's instructions.
□Perform a pre-launch check to ensure that:
• The fins and launch lugs are not broken, damaged, or loose
in any way;
• The body tube and other components are not damaged or
dented;
• The model slides freely on the launch rod or rail, with no
binding, sticking or misalignment of the launch lugs or buttons.
• If any problems are detected, correct them before attempting
to fly.
Flight Instructions
□Fly your rocket from the largest field possible on a clear
and calm day. At a minimum, you need a field at least 1.5
times the expected altitude. For example, if you expect
your model to fly to 1,000 ft (305 m), then the field should
be at least 1,500 ft (457 m) on each side.
□Do not fly near trees, power lines, or tall buildings. Do not
fly in the vicinity or low flying airplanes or airports.
□Be sure that the area is clear of dry weeds, grass, or
other flammable materials that may be ignited by the
rocket exhaust. Always use a large blast deflector.
□Use a launch pad with at least a 5 ft (1.5m) rod or rail.
Fly from a minimum distance of 30 ft (9 m) for safety and a
better view of the flight.
□Follow ALL Federal, State, and local regulations and
ordinances when flying model rockets
□ALWAYS follow the NAR Safety Code when flying model
rockets.
Flight Profile
Give a five second countdown to warn all others in the
area of a launch.
When the launch button is pressed, an electrical current
causes the igniter to heat up, igniting the propellant in the
motor. This may take as long as one second. The motor
quickly builds up thrust and moves the rocket into the air.
When the motor’s propellant is consumed, a delay grain
generates tracking smoke. When the delay grain is
consumed near peak altitude, the motor’s ejection charge
fires, activating the models recovery system. The recovery
system permits the safe landing of the model to the
ground.
Fly safely and have fun!

North Coast Rocketry
Copyright © 2012, 2015 North Coast Rocketry®. All rights reserved!10
National Association of Rocketry
MODEL ROCKET SAFETY CODE
ALWAYS FOLLOW THIS CODE WHEN USING NORTH
COAST ROCKETRY® PRODUCTS!
Materials. I will use only lightweight, non-metal parts for the
nose, body, and fins of my rocket.
Motors. I will use only certified, commercially-made model
rocket motors, and will not tamper with these motors or use
them for any purposes except those recommended by the
manufacturer.
Ignition System. I will launch my rockets with an electrical
launch system and electrical motor igniters. My launch
system will have a safety interlock in series with the launch
switch, and will use a launch switch that returns to the "off"
position when released.
Misfires. If my rocket does not launch when I press the
button of my electrical launch system, I will remove the
launcher's safety interlock or disconnect its battery, and will
wait 60 seconds after the last launch attempt before
allowing anyone to approach the rocket.
Launch Safety. I will use a countdown before launch, and
will ensure that everyone is paying attention and is a safe
distance of at least 15 feet away when I launch rockets with
D motors or smaller, and 30 feet when I launch larger
rockets. If I am uncertain about the safety or stability of an
untested rocket, I will check the stability before flight and
will fly it only after warning spectators and clearing them
away to a safe distance.
Launcher. I will launch my rocket from a launch rod,
tower, or rail that is pointed to within 30 degrees of the
vertical to ensure that the rocket flies nearly straight up,
and I will use a blast deflector to prevent the motor's
exhaust from 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 will cap the end of the rod when
it is not in use.
Size. My model rocket will not weigh more than 1,500
grams (53 ounces) at liftoff and will not contain more than
125 grams (4.4 ounces) of propellant or 320 N-sec (71.9
pound-seconds) of total impulse.
Flight Safety. I will not launch my rocket at targets, into
clouds, or near airplanes, and will not put any flammable
or explosive payload in my rocket.
Launch Site. I will launch my rocket outdoors, in an open
area at least as large as shown in the table below in safe
weather conditions with wind speeds no greater than 20
miles per hour. I will ensure that there is no dry grass
close to the launch pad, and that the launch site does not
present risk of grass fires.
Recovery System. I will use a recovery system such as a
streamer or parachute in my rocket so that it returns
safely and undamaged and can be flown again, and I will
use only flame-resistant or fireproof recovery system
wadding in my rocket.
Recovery Safety. I will not attempt to recover my rocket
from power lines, tall trees, or other dangerous places.
Installed Total Impulse (N-sec) Equivalent Motor Type Minimum Site Dimensions (ft.)
0.00--1.25 1/4A, 1/2A 50
1.26--2.50 A 100
2.51--5.00 B 200
5.01--10.00 C 400
10.01--20.00 D 500
20.01--40.00 E 1,000
40.01--80.00 F 1,000
80.01--160.00 G 1,000
160.01--320.00 Two Gs 1,500
March 2009 Revision
Join the National Association of Rocketry!
Visit www.nar.org for details!